Dawn/VIR
Visual and InfraRed Mapping Spectrometer

VIR STANDARD DATA PRODUCTS
AND ARCHIVE VOLUME
SOFTWARE INTERFACE SPECIFICATION

(VIR Archive Product and Volume SIS)



Version 1.13

January 23, 2019

Maria Teresa Capria,

INAF - IAPS,
Area Ricerca Tor Vergata,
Via del Fosso del Cavaliere, 100,
00133 Rome,
ITALY

and

S. Joy

Dawn Science Center
University of California, Los Angeles
Los Angeles, CA 90095-1567

Dawn/VIR
Visual and InfraRed Mapping Spectrometer

VIR STANDARD DATA PRODUCTS
ARCHIVE VOLUMES
SOFTWARE INTERFACE SPECIFICATION
(VIR Archive Volumes SIS)

Version 1.13
January 23, 2019

                                                                                
                                                                                
                                                                                
Approved:
                                                                                
                                                                                
                                                                                
                                                                                
                     ----------------------------------------------             
                     Maria Cristina De Sanctis                        Date      
                     Experiment Team Lead                                       
                                                                                
                                                                                
                                                                                
                                                                                
                     ----------------------------------------------             
                     Steven P. Joy                                    Date      
                     Dawn Science Center Manager                                
                                                                                
                                                                                
                                                                                
                                                                                
                     ----------------------------------------------             
                     Christopher T. Russell                           Date      
                     Dawn Principal Investigator                                
                                                                                
                                                                                
                                                                                
                                                                                
                     ----------------------------------------------             
                     Michael F. A'Hearn                               Date      
                     PDS Lead Node (SBN) Manager                                

Table of Contents

1. INTRODUCTION .......................................................

1.1 Distribution List ..............................................

1.2 Document Change Log ............................................

1.3 TBD Items ......................................................

1.4 Acronyms and Abbreviations .....................................

1.5 Glossary .......................................................

1.6 Dawn Mission Overview ..........................................

1.7 Content Overview ...............................................

1.8 Scope ..........................................................

1.9 Relationship to Other Dawn Archives ............................

1.10 Applicable Documents...........................................

1.11 Audience ......................................................

2. VIR Instrument Description ........................................

2.1 Science Objectives .............................................

2.2 Detectors ......................................................

2.3 Electronics ....................................................

2.3.1 Proximity Electronics .....................................

2.3.2 Main Electronics ..........................................

2.4 Operational Modes ..............................................

2.5 Ground calibration .............................................

3. Data Set Overview ..................................................

3.1 Data Sets ......................................................

3.2 Level-0 Data Flow ..............................................

3.3 Data Processing ................................................

3.3.1 EDR (Level 1a) Data Processing and Production .............

3.3.2 RDR (Level 1b) Data Processing and Production .............

3.4 Data Flow ......................................................

3.5 Data Release Schedule* .........................................

4. Archive Volumes ....................................................

4.1 Volume Format ..................................................

4.2 Volume Labeling and Identification .............................

4.3 Data Validation ................................................

4.3.1 Instrument Team Validation ................................

4.3.2 Science Team Validation ...................................

4.3.3 PDS Peer Review ...........................................

5. Archive Volume Contents ............................................

5.1 Root Directory Contents ........................................

5.2 INDEX Directory Contents .......................................

5.3 CATALOG Directory Contents .....................................

5.4 CALIB Directory Contents .......................................

5.5 DOCUMENT Directory Contents ....................................

5.6 DATA Directory .................................................

5.6.1 File Naming Conventions ...................................

5.6.2 Data Organization and Sub-directories .....................

5.6.3 Required Files ............................................

5.7 GEOMETRY Directory Contents ....................................

5.8 BROWSE Directory ...............................................

6. Data Format Descriptions ...........................................

6.1.1 VIR data File Structure ...................................

6.1.2 VIR EDR data File Structure ...............................

6.1.2.1 Table structure ......................................

6.1.3 VIR RDR Data File Structure ...............................

6.2 VIR Labels description .........................................

6.2.1 VIR Local keywords ........................................

Appendix A. Sample PDS Labels .........................................

Data Product Labels: EDR data ......................................

Data Product Labels: RDR data ......................................

Index Table Label ..................................................

Example Document Label .............................................

Appendix B. Support staff and cognizant personnel .....................

Appendix C. Software that can be used to work with the data ...........

Visualization of the VIR qubes .....................................

1. INTRODUCTION

This document describes the contents and types of archive volumes belonging to all of the VIR NASA level 1 (CODMAC levels 2 and 3) data sets. This includes detailed descriptions of the data formats to allow users to read the data products.

1.1 Distribution List

Table 1. Distribution List

   ===========================================================================
   Distribution List
   ---------------------------------------------------------------------------
   Name                  Email
   ===========================================================================
   M. C. De Sanctis      mariacristina.desanctis@iaps.inaf.it
         
         
         
         
         
         
         
         
         
   M. A'Hearn            ma@astro.umd.edu
   S. Joy                sjoy@igpp.ucla.edu
   J. Mafi               jmafi@igpp.ucla.edu
   C. Raymond            carol.raymond@jpl.nasa.gov
   C. Russell            ctrussell@igpp.ucla.edu
   ===========================================================================  

1.2 Document Change Log

Table 2. Document Change Log

   ===========================================================================
   Document                           Change      History
   Change                             Date        Affected Portions
   ===========================================================================
   Boilerplate  Draft                 11/02/2007  All
   Updated boilerplate, Inserted VIR 
   label information and INDEX file 
   description                        11/21/2008  All
   First draft                        2/3/2009    All
   Second draft                       12/2011     Includes description of 
                                                  updated EDR qube format
   Version 1.2                        4/2011      Includes description of 
                                                  updated EDR (ISIS3-compliant)
                                                  label
   Version 1.3                        6/2011      Updated description of labels 
                                                  and data formats
   Version 1.4                        10/2011     Updated 
   Version 1.5                        08/2012     Updated following review held
                                                  in May, 2012
   Version 1.6                        10/2012     Updated following review held 
                                                  in September, 2012
   Version 1.7                        07/11/2013  Update for Vesta data archive
   Version 1.8                        02/2014     Updated following Vesta peer review
   Version 1.9                        01/2016     Updated following Ceres 
                                                  Approach/Survey peer review
   Version 1.10                       09/2016     Ceres HAMO peer review updates
   Version 1.11                       03/2017     Updated 3-micron region calibration
                                                  description
   Version 1.12                       02/08/2018  Minor edits following Ceres
                                                  LAMO/XMO1/XMO2 peer review
   Version 1.13                       01/23/2019  Section 5.4, Table 11
   ===========================================================================  

1.3 TBD Items

Table 3. TBD Items

   ===========================================================================
   TBD Items
   ---------------------------------------------------------------------------
   Item      Section      Pages
   ===========================================================================
               
   ===========================================================================  

1.4 Acronyms and Abbreviations

Table 4. Acronyms and Abbreviations

   ===========================================================================
   Acronyms and Abbreviations
   ---------------------------------------------------------------------------
   Acronym     Definition
   ===========================================================================
   ASCII       American Standard Code for Information Interchange
   CCD         Charge-Coupled Device
   CDROM       Compact Disc, Read Only Memory
   CODMAC      Committee on Data Management and Computation
   DSC         Dawn Science Center
   DSDb        Dawn Science Database
   DVD         Digital Versatile Disc
   EDR         Experiment Data Record
   EGSE        Electrical Ground Supporting Equipment
   FC          Framing Camera(s)
   FLTOPS      JPL Multi-mission Flight Operations
   Gb          Gigabit(s)
   GB          Gigabyte(s)
   GRaND       Gamma Ray and Neutron Detector
   HAMO        High Altitude Mapping Orbit
   HK          HouseKeeping
   ISIS        Integrated Software for Imaging Spectrometers
   ISO         International Standards Organization
   JPL         Jet Propulsion Laboratory
   LAMO        Low Altitude Mapping Orbit
   NASA        National Aeronautics and Space Administration
   NSSDC       National Space Science Data Center
   PDB         Project Database
   PDS         Planetary Data System
   RDR         Reduced Data Record
   RMOC        Remote Mission Operations Center
   SAMO        Survey Altitude Mapping Orbit
   SBN         Small Bodies Node
   SCET        SpaceCraft Elapsed Time
   ST          Science Team
   SIS         Software Interface Specification
   TBD         To Be Determined
   UCLA        University of California, Los Angeles
   UTC         Coordinated Universal Time
   VIR         Visual and Infrared Mapping Spectrometer
   ===========================================================================  

1.5 Glossary

Archive – An archive consists of one or more Data Sets along with all the documentation and ancillary information needed to understand and use the data. An archive is a logical construct independent of the medium on which it is stored.

Archive Volume – A collection of files formatted according to the PDS Archive Volume standards. This collection may be electronic or stored on a PDS approved physical media such as DVD or CDROM.

Archive Volume Set – A collection of one or more Archive Volumes used to store a single Data Set or collection of related Data Sets.

Catalog Information – High-level descriptive information about a Data Set (e.g., mission description, spacecraft description, instrument description), expressed in Object Description Language (ODL), which is suitable for loading into a PDS catalog.

Data Product – A labeled grouping of data resulting from a scientific observation, usually stored in one file. A product label identifies, describes, and defines the structure of the data. An example of a Data Product is a planetary image, a spectral table, or a time series table.

Data Set – A Data Set is a collection of Data Products from a single instrument that have a common data processing level, together with supporting documentation and ancillary files.

Standard Data Product – A Data Product generated in a predefined way using well-understood procedures, processed in "pipeline" fashion. Data Products that are generated in a non­standard way are sometimes called special Data Products.

1.6 Dawn Mission Overview

The Dawn mission studied two main belt asteroids, Vesta and Ceres. Both bodies are believed to have accreted early in the history of the solar system. They have been selected because while they can speak to conditions and processes early in the formation of the solar system, they developed into two characteristically different bodies. Vesta is a dry differentiated body with a surface showing signs of resurfacing. Ceres has a primitive surface containing water-bearing minerals and may possess a weak atmosphere. By studying both these bodies, the Dawn mission was designed compare the different evolutionary path each took as well as characterize conditions of the early solar system.

To carry out its scientific mission, the Dawn spacecraft carried three science instruments. These instruments were: a visible camera (FC), a visible and infrared mapping spectrometer (VIR), and a gamma ray and neutron spectrometer (GRaND). In addition to these instruments, radiometric and optical navigation data provided data relating to the gravity field and thus bulk properties and internal structure of the two bodies (GSE).

The Dawn spacecraft was launched on September 27, 2007 on a Delta II 2925-9.5 Heavy from Cape Canaveral Air Force Station. Using its ion propulsion subsystem Dawn departed for Vesta, flying by Mars in February 2009. The spacecraft arrived at Vesta on July 16, 2011, performed its orbital operations there, and departing on September 5, 2012. Dawn arrived at Ceres on March 5, 2015, where Dawn orbited until the end of the baseline mission (Figure 1). The Dawn extended mission began July 1, 2016, with the spacecraft continuing its orbital operations at Ceres.

Figure 1. Overview of Dawn mission.

Dawn was an asteroid mapping mission. Each asteroid encounter was sub-divided into three mapping phases, each at different altitudes, and each with different science objectives and primary experiments. Shortly after orbit capture the spacecraft entered a survey altitude mapping orbit where the VIR instrument was primary. This phase was relatively short, lasting for only 6-7 orbits. Global spectroscopy data and low resolution global image mosaics were acquired during these phases at each asteroid. After survey, the spacecraft was maneuvered into a high altitude mapping orbit (HAMO) where the FC instrument was primary. Medium resolution global stereo imaging was performed at this altitude (950 km Vesta, 1950 km Ceres) while local high resolution spectroscopy data was acquired. Finally, the spacecraft proceeded to the low altitude mapping orbit (LAMO) where the GRaND and gravity experiments collected their prime data and additional, local, high resolution imaging and spectroscopy data were acquired. On asteroid approach, all of the instruments performed in-flight calibrations and acquired data that were used to characterize the hazards of the near asteroid environment (dust) and search for moons.

1.7 Content Overview

Chapter 2 describes the VIR instrument, including its primary science objectives, detectors, electronics, optics, and operation.

Chapter 3 describes the data sets, data volume, data processing and production, data flow, and scientific data validation.

Chapter 4 describes the archive volume generation, volume naming conventions, production, and PDS peer review.

Chapter 5 describes the PDS archive volume structure, the contents of each directory, and the various file naming conventions.

Chapter 6 describes the format of the EDR and RDR data files

Appendix A provides example PDS labels for the data files, index and geometry tables, and an example document label.

Appendix B lists the support staff and cognizant personnel associated with the archive generation and validation.

Appendix C lists the software that can be used to access and visualize the VIR data.

1.8 Scope

This specification applies to all archive volumes containing VIR data products for the duration of its mission.

1.9 Relationship to Other Dawn Archives

This document primarily describes the VIR L-1A (EDR) and L-1B (RDR) archives. The VIR team has also produced a L-2 (DDR) global mosaics volume for Vesta, and plans a similar volume for Ceres.

1.10 Applicable Documents

Planetary Science Data Dictionary Document, November12, 2009, Planetary Data System, JPL D-7116, Rev. E

Planetary Data System Standards Reference, February 27, 2009, Version 3.8. JPL D-7669, Part 2.

Planetary Data System Archive Preparation Guide, June 4, 2008, Version 1.3. JPL D-31224.

Dawn Science Data Management Plan, March, XX, 2007, DAWN-31-4032, JPL D-25901, Rev. A.

Dawn Mission to Vesta and Ceres, C.T. Russell, F. Capaccioni, A. Coradini, M.C. De Sanctis, W.C. Feldman and 11 others, Earth, Moon and Planets 101, 65-91, 2007.

The VIR spectrometer, M.C. De Sanctis et al.,Space Sci Rev DOI 10.1007/s11214-010-9668-5

DAWN VIR Calibration Document, G. Filacchione, E. Ammannito, Version 2.1, November 2013

1.11 Audience

This specification is useful to those who wish to understand the format and content of the VIR PDS data product archive collection. Typically, these individuals would be scientists, data analysts, or software engineers.

2. VIR Instrument Description

VIR is an imaging spectrometer having moderate spectral resolution that combines two data channels in one instrument. The two data channels, Visible (spectral range 0.25-1 micron) and Infrared (spectral range 0.95-5 micron), are committed to spectral mapping and are housed in the same optical subsystem. The instrument is composed by the Optics Module (OM), the Proximity Electronic box (PEM), housed inside the Optics Module, and the Main Electronics box (ME). The PEM contains all the electronics needed to interface the Main Electronics, to drive the FPAs, the scan mirror and the cover mechanism and to perform the acquisition and conversion of the science and housekeeping data. The ME manages the operation of the two channels, gathers data and housekeeping information, stores the data, performs data compression, controls the cryo-cooler and interfaces the instrument with the S/C. A complete description of the instrument and its performance can be found in The VIR spectrometer, M.C. De Sanctis et al., Space Sci Rev DOI 10.1007/s11214-010-9668-5. Additional description of the VIR calibration is provided in the VIR Calibration document, located in the DOCUMENT/VIR_CALIBRATION directory of the L1B archive volumes (see section 5.5). Documentation of known calibration limitations and instrument artifacts in the data are provided in the data set catalog files located in the CATALOG directory of all VIR archive volumes (see section 5.3).

2.1 Science Objectives

A Multispectral Imager - covering the range from the near UV (0.25 micron) to the near IR (5.0 micron) and having moderate to high spectral resolution and imaging capabilities - is an appropriate instrument for the determination of global (size, shape, albedo, etc.), and local (mineralogical features, topography, roughness, dust and gas production rates, etc.) properties of Vesta and Ceres. The primary scientific objectives of VIR during the Dawn mission are:

Secondary objectives are:

2.2 Detectors

The VIR optical system is a Shafer telescope matched through a slit to an Offner grating spectrometer. The Shafer consists of 5 mirrors mounted on an aluminum optical bench. The primary mirror is a scanning Beryllium mirror driven by a torque motor. The bench is machined from a single aluminum alloy billet and acts both as a cold plate and optical support structure, mounted on the ledge of the Cold Box. The Offner spectrometer consists of a mirror and a spherical convex diffraction grating housed in an aluminum structure that is flange mounted to the telescope.

The Optical Head contains the following items:

2.3. Electronics

2.3.1 Proximity Electronics

The Proximity Electronics consists of the following items:

2.3.2 Main Electronics

The ME is physically separated from the Optics Module. It consists of the Digital Processing Units (DPUs), the S/C interface control units, the power supply for all the sub-units of the instrument excluding the cryocooler, the interface units and the coolers electronics. The DPU, S/C interfaces, instrument interfaces are also called DHSU (Data Handling and Support Unit). The VIR sub-systems (PEM, coolers, covers and scan mirror) are switched on/off by means of the Power Distribution Unit (PDU) of the ME/power supply unit, controlled by the DHSU. The main tasks of the DHSU are:

2.4 Operational Modes

In order to have more flexibility during the data acquisitions, 10 different operative modes have been implemented in the VIR flight software. Each mode is unique and is defined by a combination of parameters as spatial resolution, spectral resolution and slit dimension. The use of a specific mode is useful to reduce the data volume when full resolution is not required or to improve the SNR when the observation conditions are poor.

VIR has 10 operative modes depending on the spatial and spectral resolution. The maximum total resolution includes 432x256 pixels (high spectral and high spatial resolution), while the minimum total resolution includes 144x64 pixels (low spectral and low spatial resolution). For each acquisition, one of the possible operative modes is selected and it must be the same for both the IR and VIS channel.

Each focal plane is divided in 432 bands (spectral dimensions) and 256 samples (slit dimension). A Full Frame (FF) is composed by (432x256) pixels. A Sub- Frame (SF) is composed by (144x64) pixels while a Reduced Frame (RF) is composed by (432x64) pixels. In fig. 2 the frame, sub-frame and reduced-frame definitions are explained.

Figure 2 Frame, sub-frame and reduced-frame definitions

The modes can be classified in four sub-modes:

1. Full slit
In all four of the full slit modes all 12 sub-frames (four spatial, three spectral) are acquired (see fig.2), however, the onboard electronics can reduce the data volume (and resolution) by binning in the spatial, spectral, or both dimensions. In the "high spectral and high spatial" resolution mode, there is no binning and each pixel has its intrinsic resolution for a total of 432x256 pixels per image. The "high spectral and low spatial" resolution mode has 4 pixel bins in the spatial dimension thereby reducing the spatial resolution while preserving the spectral resolution an resulting in an image with 432x64 pixels. The "low spectral and high spatial" resolution mode has 3 pixel spectral bins yielding an image with 144x256 pixels. Finally, the "low spectral and low spatial" resolution mode has four spatial and three spectral bins producing an image with 144x64 pixels.

2. Quarter slit
When in this mode, a quarter of the slit (3 sub-frames, see fig. 2) is acquired and has only one binning for the low spectral and high spatial resolution to get an image of 144x64 pixels. The high spectral and high spatial resolution in this mode gives an image of 432x64 pixels. Which quarter of the slit is acquired is decided by the operator, usually the one centered at the boresight is used but this is not a constraint. The actual position along the slit of the acquired quarter can be found in the VIR_IR_START_X_POSITION, VIR_IR_START_Y_POSITION, VIR_VIS_START_X_POSITION and VIR_VIS_START_Y_POSITION keyword.

3. Summing
When in this mode, every stored frame is the result of a sum, pixel by pixel, of 4 consecutive acquisitions. Two resolutions are possible: High spectral low spatial (432x64) and Low spectral low spatial (144x64). Assuming the same choice of resolution, there is no difference in the qube size if in full slit, summing or average. The difference is in the acquisition duration; every frame in summing or average mode takes 4 times longer the equivalent frame in full slit mode.

4. Averaging
When in this mode, every stored frame is the result of an average pixel by pixel of 4 consecutive acquisitions. High spectral low spatial (432x64) and Low spectral low spatial (144x64). This mode and the summing one are used to improve the SNR when the observation conditions are particularly poor.

In the table 5 a summing of the image size for the different modes is showed.

Table 5. VIR Operational modes

   ===========================================================================
              Mode            Number of pixels stored     Number of Sub-Frames
   ===========================================================================
   Full slit                        
   High spectral high spatial         432x256                     12
   High spectral low spatial          432x64                       3
   Low spectral high spatial          144x256                      4
   Low spectral low spatial           144x64                       1
   Quarter slit                                               
   High spectral high spatial         432x64                       3
   Low spectral high spatial          144x64                       1
   Summing                                                    
   High spectral low spatial          432x64                       3
   Low spectral low spatial           144x64                       1
   Averaging                                                  
   High spectral low spatial          432x64                       3
   Low spectral low spatial           144x64                       1
   ===========================================================================  

2.5 Ground calibration

Before the integration of the VIR experiment on the DAWN spacecraft a full calibration of the instrument has been performed to completely characterize the instrumental performances. The calibrations steps necessary to correctly retrieve the scientific information from VIR data are:

1) Geometric calibration: measurement of IFOV, FOV and in-field distortions;
2) Spectral calibration: correlation between spectral dispersion axis of the focal planes with wavelength;
3) Spatial calibration: evaluation of the flat-field matrices necessary to homogenize the focal planes responses;
4) Radiometric calibration: determination of the Instrument Transfer Function (ITF), that allows to convert digital numbers (DN) in physical units of spectral radiance (W m-2 micron-1 sterad-1).

These quantities, continuously checked during the flight at each switch-on of the experiment, are used in the data pipeline before the scientific analysis. All the known instrumental effects are corrected during the calibration pipeline (ie spectral tilt). Up to now, we do not have evidence of spectral smile, however, for this one as for any other effect, a correction procedure will be included if in the future such effects will be quantified.

3. Data Set Overview

For each mission phase, 4 data sets will be delivered: raw visible, raw infrared, calibrated visible and calibrated infrared, all arranged as "qubes".

3.1 Data Sets

Table 6. PDS Data Sets

================================================================================================
Proc     Data Set ID                               DATA_SET_NAME
Level
================================================================================================
         DAWN-X-VIR-2-EDR-VIS-CRUISE-SPECTRA-V1.0  DAWN VIR RAW (EDR) CRUISE CHECKOUT/CALIB 
                                                   VISIBLE SPECTRA V1.0
         DAWN-A-VIR-2-EDR-VIS-VESTA-SPECTRA-V1.0   DAWN VIR RAW (EDR) VESTA VISIBLE SPECTRA V1.0
EDR      DAWN-A-VIR-2-EDR-VIS-CERES-SPECTRA-V1.0   DAWN VIR RAW (EDR) CERES VISIBLE SPECTRA V1.0
NASA-1A  DAWN-X-VIR-2-EDR-IR-CRUISE-SPECTRA-V1.0   DAWN VIR CRUISE RAW (EDR) CHECKOUT/CALIB 
                                                   INFRARED SPECTRA V1.0
         DAWN-A-VIR-2-EDR-IR-VESTA-SPECTRA-V1.0    DAWN VIR RAW (EDR) VESTA INFRARED SPECTRA V1.0
         DAWN-A-VIR-2-EDR-IR-CERES-SPECTRA-V1.0    DAWN VIR RAW (EDR) CERES INFRARED SPECTRA V1.0
-------------------------------------------------------------------------------------------------
         DAWN-X-VIR-3-RDR-VIS-CRUISE-SPECTRA-V1.0  DAWN VIR CAL (RDR) CRUISE CHECKOUT/CALIB 
                                                   VISIBLE SPECTRA V1.0
         DAWN-A-VIR-3-RDR-VIS-VESTA-SPECTRA-V1.0   DAWN VIR CAL (RDR) VESTA VISIBLE SPECTRA V1.0
RDR      DAWN-A-VIR-3-RDR-VIS-CERES-SPECTRA-V1.0   DAWN VIR CAL (RDR) CERES VISIBLE SPECTRA V1.0
NASA-1B  DAWN-X-VIR-3-RDR-IR-CRUISE-SPECTRA-V1.0   DAWN VIR CAL (RDR) CRUISE CHECKOUT/CALIB 
                                                   INFRARED SPECTRA V1.0
         DAWN-A-VIR-3-RDR-IR-VESTA-SPECTRA-V1.0    DAWN VIR CAL (RDR) VESTA INFRARED SPECTRA V1.0
         DAWN-A-VIR-3-RDR-IR-CERES-SPECTRA-V1.0    DAWN VIR CAL (RDR) CERES INFRARED SPECTRA V1.0
=================================================================================================  

3.2 Level-0 Data Flow

The DSC captures all of the payload instrument telemetry frames as binary files after the data have been cleaned up in the post-pass processing (reconstructed level-0 data). Post-pass processing is completed with 8 hours of each pass and typically is able to fix minor forms of data corruption (partial packet reconstruction, dropped time tags, etc.). These files are inventoried within the Dawn Science Database (DSDb) and made available to the teams for download at any time. The DSC prepares the documentation and metadata required in order to submit these products to the PDS to be saved (rather than archived). The PDS documentation threshold for saved data sets is substantially lower than for archived products. The raw decoded frames are not considered to be useful for the general science community but the bits will be preserved in their rawest form. The DSC will submit the telemetry frames to the PDS Small Bodies Node (SBN) (TBC) within a week of the end of each science phase. All level-0 data products are created with PDS "minimum" labels. Each level-0 data file contains the CCSDS (Consultative Committee for Space Data Systems) packets for a single APID (Application Process Identifier).

The Doppler Tracking data are used by the NAV and Gravity Science teams. These data flow from the DSN into the OSCAR-X system where they are accessible to the gravity team at JPL. Since these data do not flow directly into the DSC, the DSC staff will manually retrieve them from OSCAR-X and load them into the DSDb. Gravity Science investigators that are not at JPL will use the DSDb to retrieve the level-0 data for their analysis. This process is described in the operational interface agreement (OIA-DSC-409) between the Gravity Science Team and the DSC. Unlike the decoded frames, the level-0 Doppler Tracking data are archived with the PDS. DSC prepares these data for archive and submits them to the PDS SBN at the same time as the level-1a data products from the payload instruments.

Figure 3. Dawn Science Data Flow. SPAA elements and products are outlined with solid black lines, MOS components with dotted lines, and PDS components with dashed lines.

3.3 Data Processing

3.3.1 EDR (Level 1a) Data Processing and Production

Level-0 data are retrieved by the VIR team and stored in the local archive, located at IFSI in Rome. The data are then fed into the EGSE and transformed in Level 1a data with a detached label.

3.3.2 RDR (Level 1b) Data Processing and Production

The functional steps that are being performed to create level 1b data, starting from level 1a data created by the ESGE, are listed below. A flowchart of this process is provided in Figure 4. The performed steps are the same for the two focal planes, but different algorithms are being used. More details can be found in the DAWN VIR Calibration Document.

The output of the calibration pipeline is a calibrated 3D matrix for each focal plane, to be used as input for the procedure creating the PDS level 1b archives.

Note that for Vesta calibrated (ITF V1) values in the spectral range [2.534µm - 3.272µm] were initially set to null due to problems in producing a good calibration at those wavelengths when compared to known sources. Prior to arrival at Ceres, the VIR team was able to produce an improved calibration (ITF V2) which removed the artifacts in the 3-micron region. The new calibration covers the full spectral range and is appropriate for use at both Vesta and Ceres. However, contamination in the 3-micron region that occurred during the Vesta HAMO 1 (VSH) phase related to cold-trapped volatiles which mimics a water vapor absorption has not been dealt with yet effectively, thus that portion of the spectrum has still been omitted from the VSH data. In other mission phases this problem has been avoided by frequent powering off of the cryocooler, allowing the trapped substance to evaporate. More information about this contamination is provided in the DATA_CONFIDENCE_NOTE section of the IR data set catalog files.

Figure 4. Flowchart of the VIR data calibration pipeline

3.4 Data Flow

The Instrument Teams retrieve the reconstructed Level-0 data from the DSDb and use it to produce the Level-1a (raw, reformatted) data sets. The raw telemetry data are decompressed, decoded, and formatted into scientifically useful data structures. These products, along with their required PDS documentation, form the level-1a data sets (EDRs). The Instrument Teams extract the reconstructed spacecraft ephemeris and pointing data (SPICE kernels) from the DSDb and use these data to compute the various geometry data that are included in the PDS labels associated with each data product. The Instrument Teams are required to submit the PDS-labeled EDRs to the DSDb within 7 days after the reconstructed data are made available to the teams (see OIA-DSC-406). These data are then available to the rest of the Science Team for validation and preliminary analysis. If any problems are discovered during validation or analysis, new products are produced by the VIR team and delivered to the DSC for use by the Science Team and eventual archive (see schedule) by the PDS. The VIR team also generates PDS catalog files and other documentation (activity reports, instrument performance reports, calibrations, etc.) and provides these files to the DSC for the internal distribution and archive.

After the data are validated by the Dawn Science Team, the DSC packages the data, catalog files, and documentation into PDS-compliant archive data volumes, one volume for each data set according to PDS volume organization standards (JPL-D-7669). The DSC is responsible for the creation of the PDS required files associated with archive volumes (AAREADME.TXT, VOLDESC.CAT, etc.), including the index table. The DSC then delivers the volumes to the PDS SBN in accordance with the SBN standard data delivery practices at the time of each delivery. Presently, the PDS SBN accepts volumes delivered electronically, on CDROM, and on DVD-R. EDR data volumes are to be delivered to the PDS SBN for peer review within 90 days of the end of each science phase (Approach, Survey, HAMO, LAMO, etc.). The DSC is responsible for following the archive submissions through the PDS peer review process until the data are finally accepted into the PDS archive. The Instrument Teams will support the DSC during this PDS process by providing any additional documentation that is requested by the PDS peer review panel.

Additional data processing is performed by the VIR team to produce calibrated level 1b (RDR) data products (radiometrically corrected spectra). The VIR team produces the processed products using the archived EDR data sets. The RDR data products, together with the calibration files that have been used in the calibration process, are submitted to the DSDb within a few months of the receipt of the corrected telemetry by ground data system. If during the course of the mission an improved calibration becomes available, the VIR team may choose to update the data in the DSDb using the latest version of the calibration. The VIR team is not obligated to provide updated RDR data products and any such resubmission would be negotiated with the Science Team. The DSDb system supports the resubmission of data sets.

The DSC has the same roles and responsibilities with respect to the generation of PDS archive compliant volumes for the RDR data sets as it does for the EDR data sets. Final RDR data volumes are publicly released by the PDS SBN within 6 months after asteroid departure. In order to support this schedule, peer review copies of the archive volumes will normally be delivered to the SBN 2 months prior to the final data release. The DSC and VIR Teams will support the PDS peer review process of the RDR data sets in the same manner as the EDR data sets. Peer review liens will be addressed in time to support the public release date. Final (corrected) archive volumes will be delivered to the SBN two weeks prior to the public release.

3.5. Data Release Schedule*

Table 7. Data Release Schedule

==================================================================================
Data Product     Provider   Mars       Vesta                  Ceres
==================================================================================
Level 0          DSC        Apr 2009   Aug 2011 to Jul 2012   Mar 2015 to Aug 2015
EDR - Level 1a   VIR/DSC    Oct 2009   Dec 2011 to Dec 2012   May 2015 to Sep 2015
RDR - Level 1b   VIR/DSC    Oct 2009   Apr 2013               Jan 2016
Derived Data     VIR        Apr 2010   Nov 2013               Jan 2016
==================================================================================  

* Assumes current project schedule (arrival and departure dates)

4. Archive Volumes

This chapter describes the format of VIR standard product archive volumes. Data that comprise the VIR standard product archives will be formatted in accordance with Planetary Data System specifications [Planetary Science Data Dictionary, 2008; Planetary Data System Archive Preparation Guide, 2006; PDS Standards Reference, 2007].

4.1. Volume Format

Disk formats for the archive volumes will conform to the PDS standard for the applicable media. At present, the plan is to archive VIR data in online data volumes that are delivered to the SBN electronically. Although the volumes will be electronic, they will comply with the same volume organization standards that PDS formerly used to describe physical volumes on DVD or CDROM media.

4.2. Volume Labeling and Identification

Each VIR data set will be archived on a separate PDS volume. The volume naming convention is:

DWNtpVIR_dl

where:

d – detector (V – VIS; I – IR),
l – processing level (1A – EDR; 1B – RDR;),
t – mission target (X – cruise; M – Mars ; V – Vesta; C - Ceres).
p – mission phase (only used for Ceres volumes: A – Approach; S – Survey; H – HAMO; L – LAMO)

For example, the Vesta VIS EDR volume will be named DWNVVIR_V1A and the Ceres Approach/RC3 IR RDR volume will be DWNCAVIR_I1B.

4.3 Data Validation

4.3.1 Instrument Team Validation

The VIR team will be making the following checks on the data, before submitting them to the DSC:

  • Completeness of the data set: it is checked that all the expected data were received by the EGSE and that there is no loss of packets. If the data set is complete, the value of the keyword DATA_QUALITY_ID is set to 1. If the data set is not complete, the EDR data are not padded with 0, and there is no way to reconstruct the missing information.
  • Acquisition conditions: analysis of the telemetry to see if the instrument operated nominally.
  • Quality of the data: check of the saturation, SNR (signal-to-noise ratio) and, if applicable, the quality of the outputs of the calibration pipeline.

    4.3.2 Science Team Validation

    The Dawn Science Team has access to the VIR EDR and RDR data sets for several months prior to their public release by the PDS. These are the data that the Science team uses for its initial data analysis and interpretation. Any data processing errors that are discovered through the use of the data are reported back to the VIR team so that they can be corrected. In addition, the Science Team uses the same documentation that is later released to the PDS during its analysis. If any of the documentation is unclear, or if there are omissions in the documentation that hinder data analysis, these problems are reported back to the VIR team so that they can be corrected.

    4.3.3 PDS Peer Review

    The peer review panel consists of members of the instrument team, the DSC, and members of the PDS Small Bodies and Engineering Nodes, and at least two outside scientists actively working in the field of asteroid remote sensing science. The DSC is responsible for generating and delivering PDS-compliant volumes to the SBN. The PDS personnel are responsible for verifying that the volume(s) are fully compliant with PDS standards. The instrument team and outside science reviewers are responsible for verifying the content of the data set, the completeness of the documentation, and the usability of the data in its archive format. The peer review process is a two part process. First, the panel reviews this document and verifies that a volume produced to this specification will be useful. Next, the panel reviews a specimen volume to verify that the volume meets this specification and is indeed acceptable.

    During the peer review process, the panel will normally identify errors or omissions in the archive documentation, problems with conformance with the PDS standards. All accepted peer review liens will be resolved prior to the public release of the data. Liens that require data product updates, or updates to the instrument or data set documentation will be addressed by the VIR team. Any problems identified with the volume format, volume documentation, index files, or other products produced by the Dawn Science Center will be corrected by the DSC. After the liens are resolved, the DSC will create and submit an updated archive volume to the PDS Small Bodies Node.

    5. Archive Volume Contents

    This section describes the contents of the VIR standard product archive collection volumes, including the file names, file contents, file types, and organizations responsible for providing the files. All the ancillary files described herein appear on each VIR archive volume, except where noted.

    5.1 Root Directory Contents

    The following files are contained in the root directory, and are produced by the DSC at UCLA. With the exception of the hypertext file and its label, all of these files are required by the PDS Archive Volume organization standards.

    Table 8. Root Directory Contents

       =================================================================================
       Root Directory Contents
       ---------------------------------------------------------------------------------
       File Name         File Contents                                  File Provided By
       =================================================================================
       AAREADME.TXT      This file completely describes the Volume             DSC
                         organization and contents (PDS label 
                         attached).
                         
       ERRATA.TXT        A cumulative listing of comments and updates          DSC
                         concerning all INST_ID Standard Data Products 
                         on all INST_ID Volumes in the Volume set 
                         published to date.
                         
       VOLDESC.CAT       A description of the contents of this Volume          DSC
                         in a PDS format readable by both humans and 
                         computers. 
                         
       MD5_CHECKSUM.TXT  File containing a listing of the MD5 checksum,        DSC
                         and file location of every file on the volume. 
       =================================================================================  

    5.2 INDEX Directory Contents

    The following files are contained in the INDEX directory and are produced by the DSC. The INDEX.TAB file contains a listing of all data products on the archive volume and is described by a detached PDS label (INDEX.LBL). The GEOM_INDEX.TAB file contains a listing of geometrical parameters associated with each data file. The values provided in this table have been extracted from the individual data product labels. GEOM_INDEX.TAB is described by a detached PDS label (GEOM_INDEX.LBL). The index table, label, and index information (INDXINFO.TXT) files are required by the PDS volume standards. The index tables include both required and optional columns.

    Table 9. Index Table Contents

       ===========================================================================
       Index Table Contents
       ---------------------------------------------------------------------------
       Column Name           Format  Units  Description
       ===========================================================================
       DATA_SET_ID            A38           Identifier of the data set to which 
                                            the product belongs
                                            
       FILE_SPEC_NAME         A80           Complete path and file name relative to 
                                            the volume root directory
                                            
       PRODUCT_ID             A30           PDS Product Identifier (typically file 
                                            name, minus extension and version)
                                            
       VOLUME_ID              A11           Identifier of the volume on which the 
                                            product is archived
                                            
       PRODUCT_CREATION_TIME  A23           File creation date/time
       
       START_TIME             A23           File start time – UTC at spacecraft
       
       STOP_TIME              A23           File end time – UTC at spacecraft
       
       IMAGE_MID_TIME         A23           The center time of the image or cube
       ===========================================================================  

    5.3 CATALOG Directory Contents

    The completed PDS catalog files in the CATALOG directory provide a top-level understanding of the Dawn/VIR mission and its data products. The information necessary to create the files is provided by the VIR team and formatted into standard template formats by the DSC. The files in this directory are coordinated with the data engineers at both the DSC and the PDS SBN.

    Table 10. Catalog Directory Contents

       =================================================================================
       Catalog Directory Contents
       ---------------------------------------------------------------------------------
       File Name                File Contents                           File Provided By
       =================================================================================
       CATINFO.TXT              A description of the contents of this          DSC
                                directory
                                
       VIR_DDD_PPP_TTT_DS.CAT   PDS Data Set catalog description of the      VIR Team
                                data set included on this volume 
                                   DDD = detector (IR or VIS)      
                                   PPP = processing (EDR or RDR)      
                                   TTT = mission phase target (CRUISE, VESTA,
                                         or CERES)
                                         
       dawninsthost.cat         PDS instrument host (spacecraft)               DSC
                                catalog description of the Dawn 
                                spacecraft
                                
       VIR_INST.CAT             PDS instrument catalog description of        VIR Team
                                the VIR instrument
                                
       dawnmission.cat          PDS mission catalog description of the         DSC
                                Dawn mission 
                                
       VIR_PERSON.CAT           PDS personnel catalog description of VIR     VIR Team
                                Team members and other persons involved 
                                with generation of VIR Data Products
                                
       VIR_REF.CAT              VIR-related references mentioned in other    VIR Team
                                *.CAT files
                                
       X_TARG.CAT               PDS catalog description of target X (when      DSC
                                included in the volume) 
       =================================================================================  

    5.4 CALIB Directory Contents

    The calibration directory contains calibration files and procedures. Text files are described by attached PDS labels. Formatted documents are described by detached PDS labels.

    The calibration files contained in this directory are usually made available usually made available together with the calibrated (RDR level) data files.

    Table 11. CALIB Directory Contents

       ===================================================================================
       Calib Directory Contents 
       -----------------------------------------------------------------------------------
       File Name                       File Contents                              File 
                                                                               Provided By
       ===================================================================================
       CALINFO.TXT                     A description of the contents of           DSC
                                       this directory 
                                       
       DAWN_VIR_VIS_RESP_V2.DAT        432x256 floating precision matrix        VIR Team
                                       containing the Instrumental Transfer 
                                       Function, including the VIS flat-field.
                                       
       DAWN_VIR_IR_RESP_V2.DAT         432x256 floating precision matrix        VIR Team
                                       containing the Instrumental Transfer 
                                       Function, including the IR flat-field.
                                       
       DAWN_VIR_VIS_HIGHRES_SPECAL_V2.TAB   The file contains the wavelengths,  VIR Team
                                       of the 432 bands of the visible focal 
                                       plane (high spectral modes, see 2.4). 
    
       DAWN_VIR_IR_HIGHRES_SPECAL_V2.TAB   The file contains the wavelengths    VIR Team
                                       of the 432 bands of the infrared focal 
                                       plane (high spectral modes, see 2.4). 
                                       
       DAWN_VIR_VIS_NOMRES_SPECAL_V2.TAB   The file contains the wavelengths    VIR Team
                                       of the 144 bands of the visible focal 
                                       plane (low spectral modes, see 2.4). 
                                       
       DAWN_VIR_IR_NOMRES_SPECAL_V2.TAB   The file contains the wavelengths     VIR Team
                                       of the 144 bands of the infrared focal 
                                       plane (low spectral modes, see 2.4).
                                       
       DAWN_VIR_IR_SOLAR_SPECTRUM_V2.TAB   The file contains solar spectrum     VIR Team
                                       irradiance for the infrared channel.
                                       
       DAWN_VIR_VIS_SOLAR_SPECTRUM_V2.TAB  The file contains solar spectrum     VIR Team
                                       irradiance for the visible channel.
                                       
       DAWN_VIR_VIS_WIDTH432_V2.TAB   The file contains the widths of the       VIR Team
                                      432 bands of the visible focal plane 
                                      (high spectral modes, see 2.4).
                                      
       DAWN_VIR_IR_WIDTH432_V2.TAB    The file contains the widths of the       VIR Team
                                      432 bands of the infrared focal plane 
                                      (high spectral modes, see 2.4).
                                      
       DAWN_VIR_VIS_WIDTH144_V2.TAB   The file contains the widths of the       VIR Team
                                      144 bands of the visible focal plane 
                                      (low spectral modes, see 2.4). 
                                      
       DAWN_VIR_IR_WIDTH144_V2.TAB    The file contains the widths of the       VIR Team
                                      144 bands of the infrared focal plane 
                                      (low spectral modes, see 2.4). 
                                      
       VIR_IR_CORRECTION_FACTOR.TAB   This file contains a series of            VIR Team
                                      correction factors 'alpha' that may be 
                                      applied to each band of the VIR L-1B 
                                      IR cubes to correct for a positive 
                                      slope in the VIS-NIR range when 
                                      compared to ground based spectra of
                                      the same target (Vesta and Ceres).
                                      
       VIR_VIS_CORRECTION_FACTOR.TAB  This file contains a series of            VIR Team
                                      correction factors 'alpha' that may be 
                                      applied to each band of the VIR L-1B 
                                      VIS cubes to correct for a positive 
                                      slope in the VIS-NIR range when 
                                      compared to ground based spectra of
                                      the same target (Vesta and Ceres).
       ===================================================================================  

    5.5 DOCUMENT Directory Contents

    Archive documents are stored in the DOCUMENT directory branch of the archive volume. Each document is located in a separate subdirectory. Documents are stored either in simple ASCII text files with attached PDS labels (*.TXT) or in PDF-A (archive PDF) format with detached PDS labels.

    Table 12. Document Directory Contents

       =================================================================================
       DOCUMENT Directory Contents
       ---------------------------------------------------------------------------------
       File Name           File Contents                                File Provided By
       =================================================================================
       DOCINFO.TXT         A description of the contents of this              DSC
                           directory    
                           
       SCIENCE_PLAN        A directory containing copies of the Dawn      Dawn Project
                           Science Plan 
                           
      CERES_COORD_SYS      A directory containing copies of the Ceres     Dawn Project
                           coordinate system description
                           
       SIS                 A directory containing copies the data           VIR Team
                           product and archive volume SIS (this 
                           document)
                           
       VESTA_COORDINATES   A directory containing copies of the Vesta     Dawn Project
                           Coordinate Systems Document  
                           
       VIR_CALIBRATION     A directory containing copies of the VIR         VIR Team
                           Calibration Document
                           
      VIR_LAMP_DESCRIPTION A directory containing a copy of a document        DSC
                           describing the VIR internal calibration lamp
                           
       ENVI_TUTORIAL       A directory containing copies of the VIR 
                           ENVI Tutorial document      
                           
       ISIS_TUTORIAL       A directory containing copies of the VIR 
                           ISIS Tutorial document      
       =================================================================================  

    5.6 DATA Directory

    The DATA directory contains the data products (labeled data files) produced by the VIR team.

    5.6.1 File Naming Conventions

    VIR spectral data are stored in QUBE format with detached PDS labels. Data cubes are named according to the suffix indicating the channel, the processing level, the spacecraft clock reset number and the acquisition SC_CLOCK_START_COUNT (integer part). The naming convention is the following:

    VIR_sss_ll_v_sctime_z

    where:

    VIR indicates the instrument, fixed
    sss indicates the sensor, IR or VIS for the infrared or visible spectrometers respectively
    ll indicates the processing level, either 1A or 1B
    v indicates the clock reset number

    sctime is the acquisition SC_CLOCK_START_COUNT (integer part)
    z indicates the data file version (1-9)

    The extension is always QUB. For example, visible channel raw data acquisitions starting at SC_CLOCK_START_COUNT = 21983325.39258 are named:

    VIR_VIS_1A_1_21983325_1.QUB

    Due to internal synchronization delays, the same acquisition could be shifted by few seconds among the two channels.

    The housekeeping data related to a given qube are stored in a table with a detached label. The extension of the file containing the table is TAB. The filename is similar to the corresponding data Qube, but for a 'HK' inserted before the file version number. As an example, the housekeeping information of the qube VIR_VIS_1A_1_21983325_1.QUB is stored in the file VIR_VIS_1A_1_21983325_HK_1.TAB. The HK tables for a give spectra are identical in both the 1A and 1B data.

    The 1B data also includes "quality qubes". These files have a 'QQ' inserted before the file version number. Quality qubes contain information related to the calibration of the associated data qube.

    5.6.2. Data Organization and Sub-directories

    The DATA directory will normally be divided into subdirectories by observing period in order to keep the number of data files in each directory manageable. The cruise calibration volume will eventually contain many years of data. The first level of subdivision of this volume will be mission phase. The Vesta and Ceres data volumes will be subdivided by observation. Phase and observation level directories will be named following the convention:

    yyyymmdd_xxx

    where:

    yyyymmdd = start date (yyyy=year, mm=month, dd=day)
    xxx = phase or observation ID

    Examples:

    20110929_HAMO
    20111006_CYCLE1
    20110814_CYCLE2

    if the mission timeline remains as it is today.

    5.6.3 Required Files

    Every file in the DATA path of a VIR archive volume is described by an external (detached) PDS label.

    5.7 GEOMETRY Directory Contents

    The GEOMETRY directory contains copies of the VIR SPICE metakernel (TM) files. TM files are SPICE text kernels that list the SPICE kernels that were used in data processing and in the calculation of the geometry parameters contained in the data label files. The SPICE kernels listed in these TM files are archived at the PDS-NAIF node.

    VIR TM files are named according to the convention:

    DAWN_phase_Rnn.TM

    where:

    phase indicates the mission phase covered by the TM file
    nn indicates the TM file version number

    For example the file DAWN_VSH_R03.TM is version 3 of the Vesta Science HAMO (VSH) metakernel.

    5.8 BROWSE Directory

    To the moment, there are no planned BROWSE products.

    6. Data Format Descriptions

    6.1.1 VIR data File Structure

    EDR and RDR data products are organized in a similar way, that is three- dimensional matrices (a QUBE) containing the data + a TABLE containing associated housekeeping information. The labels are always detached.

    A QUBE object is a multidimensional array (called the core) of sample values in multiple dimensions. The core is homogeneous, and can consist of unsigned byte, signed half-word or floating point full-word elements. QUBEs of one to three dimensions may have optional suffix areas in each axis.

    The QUBE is the main data structure of the ISIS (Integrated Software for Imaging Spectrometers) system. A frequently used specialization of the QUBE object is the ISIS Standard

    Qube, which is a three-dimensional QUBE with two spatial dimensions and one spectral dimension. Its axes have the interpretations 'sample', 'line' and 'band'. Three physical storage orders are allowed: band-sequential, line- interleaved (band-interleaved-by-line) and sample-interleaved (band- interleaved-by-pixel).

    The implementation selected for VIR data does not include suffix areas; the associated information is instead stored in a table.

    Figure 5. Generic ISIS Cube Structure

    6.1.2 VIR EDR data File Structure

    The VIR EDR data sets use the 3-D core structure to store the instrument data. A table is storing instrument housekeeping data. Spectra are stored intact for single sample (most rapidly varying component in the 3-D structure). All samples are collected at a single time, and are thus the next most rapidly varying component of the data core. Finally, QUBEs are constructed by assembling spatial lines that are either acquired in a push-broom mode (value field of the keyword SCAN_MODE_ID set to 0) or by using the VIR scan mirror that moves the slit across the target body. The line direction is the most slowly varying component in the data core.

    The data files include the data QUBE itself, a TABLE with the instrument housekeeping and the two detached labels. The labels are ASCII text and can be viewed using normal text viewers.

    The following definitions apply to both EDR and RDR qubes (see fig. 6).

    In the following table, the co-ordinate sizes for the different VIR operative modes are listed.

    Table 13. VIR operative modes

    =====================================================================================
    OPERATIVE MODE                    #BANDS                    #SAMPLES (1)   #LINES (2)
    -------------------------------------------------------------------------------------
    science full slit
    
    LOW SPATIAL                         288                         64          3600 (3)
    LOW SPECTRAL            binning  3 (144 VIS + 144 IR)        binning 4
    
    HIGH SPATIAL                        288                        256           900 (3)
    LOW SPECTRAL            binning  3 (144 VIS + 144 IR) 
    
    HIGH SPECTRAL                       864                         64          1200 (3)
    LOW SPATIAL                  (432 VIS + 432 IR)              binning 4
    
    HIGH SPECTRAL                       864                        256           300 (3)
    HIGH SPATIAL                 (432 VIS + 432 IR)
    -------------------------------------------------------------------------------------
    science quarter slit(4)                                    
    
    HIGH SPECTRAL                       864                         64          1200 (3)
    HIGH SPATIAL                 (432 VIS + 432 IR)
    
    LOW SPECTRAL                        288                         64          3600 (3)
    HIGH SPATIAL            binning 3 (144 VIS + 144 IR)
    -------------------------------------------------------------------------------------
    Calibration                                    
    
    HIGH SPECTRAL                       864                        256            35
    HIGH SPATIAL                 (432 VIS +432 IR)            256            35
    =====================================================================================  

    (1) The max number of samples is also called swath width (Dx)
    (2) The max number of lines is also called swath length (Dy)
    (3) The number of lines to saturate the VIR on board mass memory of 1 Gbits (TBC)
    (4) The science quarter slit is an operational mode selectable by command: the position of the quarter slit is selectable by TC for the VIS channel, while it is fixed for the IR channel.

    Figure 6. Definitions of data types

    A DATA CUBE is a 3-dimensional matrix representing a set of data, i.e. the digital number vs. the two spatial co-ordinates (x,y) and the spectral one (l).

    An IMAGE is a 2-dimensional matrix of the data cube, defined by selecting its # BAND.

    A FRAME is a 2-dimensional matrix of the data cube, defined by selecting its # LINE (scan mirror in a fixed position).

    A SLICE is a 2-dimensional matrix of the data cube, defined by selecting its # SAMPLE.

    A PIXEL is an element of the image (associated to a # BAND), defined by selecting # SAMPLE and # LINE (i.e. spatial coordinates (x,y)).

    For each pixel it is useful to define the following data structures:

    6.1.2.1 Table structure

    The frames composing a qube are downloaded as a series of packets, containing part of a given frame. Each packet begins with a secondary header, while a primary header is downloaded at the beginning of each stream of packets. All the housekeeping information related to the frames is coming with the primary and secondary header of the packets. The HK parameters are stored in a table as 33 fields with a variable number of bytes. Every line in the table corresponds to a frame in the qube data file. The number of table rows actually used is identical for each frame. This number is written in the value field of SUFFIX_ITEM keyword (see section 6.2). The following table details the content of the HK table.

    Table 14. Information stored on each row of the housekeeping table

    ==============================================================================
    Start   Field name                 Unit   Description
    byte
    ==============================================================================
       1    VERSION, TYPE, SECONDARY          Information derived from the        
            HEADER FLAG                       secondary header of the packet
                                              containing the frame
                                              
       4    APID                              Information deriving from the 
                                              secondary header of the packet 
                                              containing the frame
                                              
       8    PACKETS SEQUENCE CONTROL          Information deriving from the 
                                              secondary header of the
                                              packet containing the frame
                                              
      14    PACKETS LENGTH                    Information deriving from the 
                                              secondary header of the packet 
                                              containing the frame      
                                              
      19    SCET TIME (CLOCK)                 Spacecraft elapsed time referred to 
                                              the frame
                                              
      34    FRAME NUMBER                      Number of frames in the current 
                                              subsession/sequence step
                                              
      38    FRAME COUNT                       Frame in the current sub-session/
                                              sequence step counter
                                              
      42    SUBFRAME  COUNT                   Sub-frame in the current frame 
                                              counter
                                              
      45    PACKETS COUNT                     Packet in the current sub-frame 
                                              counter
                                              
      48    SHUTTER STATUS                    Status of the shutter during the 
                                              data acquisition: 1 = open; 
                                              0 = close (dark current acquisition)
                                              
      57    CHANNEL IDENTIFIER                Identifier of the channel: 1 = VIS; 
                                              0 = IR
                                              
      61    COMPRESSION MODE                  Type of compression applied on the 
                                              onboard data, before the 
                                              transmission to Earth.
                                              
      82    SPECTRAL RANGE                    Spectral range that has been 
                                              actually acquired.
                                              
     107    CURRENT MODE                      Operative mode (see tab. 5, pag. 14) 
     
     120    CURRENT SUBMODE                   Operative submode (see tab. 5, pag.
                                              14)
                                              
     135    M IR EXPOSURE TIME           s    IRFPA exposure time
     
     146    M IR TEMPERATURE             K    IRFPA temperature
     
     157    M CCD EXPOSURE TIME          s    CCD exposure time
     
     168    M CCD TEMPERATURE            K    CCD temperature
     
     179    M MIRROR SINUS              DEG   Sinus of the electrical angle of the
                                              scan unit (commanded)
                                              
     190    M MIRROR COSINE             DEG   Cosinus of the electrical angle of 
                                              the scan unit (commanded)
                                              
     201    M SPECTROMETER TEMPERATURE   K     Temperature of the spectrometer
            
     212    M TELESCOPE TEMPERATURE      K     Temperature of the telescope
     
     223    CCE COLD TIP                 K                
     
     234    RADIATOR TEMPERATURE         K     Temperature of the radiator
     
     245    M SU MOTOR CURRENT           A     Scan unit motor temperature
     
     256    LEDGE TEMPERATURE            K    Optical mounting ledge temperature
     
     267    START NOISY BITS                  This information is related to the 
                                              compression algorithm applied 
                                              onboard on the data.  
                                              
     270    END NOISY BITS                    This information is related to the 
                                              compression algorithm applied 
                                              onboard on the data.  
                                              
     273    CR ROW                            This information is related to the 
                                              compression algorithm applied 
                                              onboard on the data.  
                                              
     276    NUMBER OF NOISY BITS              This information is related to the 
                                              compression algorithm applied 
                                              onboard on the data.  
                                              
     279    SUB-FRAME DATA                    This information is related to the 
                                              compression algorithm applied 
                                              onboard on the data.  
                                              
     285    SEQUENCE STEP                     Step in the the TC sequence at the 
                                              origin of the data
    ==============================================================================  

    6.1.3 VIR RDR Data File Structure

    The logical object that is storing the calibrated data is a QUBE with a detached label. Information relevant to the calibration process is stored in another qube formed by three planes (called 'quality qube'), with detached label. The filenames of the calibrated data are following the same formation rules as the raw data. A 'QQ' is inserted before the file version number in the filename of the quality qube.

    The data in a RDR cube are expressed in radiance physical units (W m- 2 mm-1 sterad-1), saved in floating precision in BIP format (Bands, Sample, Line). The label is similar to the one of the corresponding EDR cube; a "NOTE" in the HISTORY OBJECT is keeping trace of the ITF file used in the calibration process.

    The quality qube contains three planes:

       =================================================
       VIS
       =================================================
       Regular pixel                                 0
       Filter                                        1
       Defective pixel                               2
       Detilt empty zone                             3
       Filter+Defective pixel                        4
       Filter+Detilt empty zone                      5
       Defective pixel + Detilt empty zone           6
       Filter+Defective pixel+Detilt empty zone      7
       =================================================                            

       =================================================
       IR
       =================================================
       Regular pixel                                 0
       Filter                                        1
       Defective pixel                               2
       IRFPA failure zone                            3
       Filter+Defective pixel                        4
       Filter+IRFPA failure zone                     5
       Defective pixel + IRFPA failure zone          6
       Filter+Defective pixel+IRFPA failure zone     7
       =================================================                            

    This information is stored in a byte array of bands x sample elements by the calibration pipeline. The array is single precision floating point by construction, including this plane.

    6.2. VIR Labels description

    The keywords contained in the VIR data products labels are listed in the following tables, together with a short description.

    Table 15. Keywords contained in the VIR data products labels

    ===========================================================================================
    Keyword                    Value       Value Description
                               Units
    ===========================================================================================
    PDS_VERSION_ID                         Value = "PDS3"
                                           This is the version number of the PDS 
                                           standard document that is valid when a 
                                           data product label is created.
                                                  
    LABEL_REVISION_NOTE                    Information on the actual version of 
                                           the label 
                                                  
    DATA_SET_NAME                          See Table 6 for a list of valid values
    
    DATA_SET_ID                            See Table 6 for a list of valid values
    
    PRODUCT_ID                             Actual name of the file containing the 
                                           data; see section 5.6.1
                                           
    PRODUCT_TYPE                           Possible values: EDR or RDR 
    
    PRODUCER_FULL_NAME                     Value = "A. CORADINI"
    
    PRODUCER_INSTITUTION_NAME              Value = "ISTITUTO NAZIONALE DI ASTROFISICA"
                                           Identifies the organization responsible for 
                                           developing the data products.
                                           
    PRODUCT_CREATION_TIME                  Contains the date and time at which the PDS 
                                           file was created in PDS time format.
                                           
    PRODUCT_VERSION_ID                     The version number of the PDS product.
    
    RECORD_TYPE                            Value = "FIXED_LENGTH"
                                           All VIR data files will be using a 
                                           fixed-length record format.
                                           
    RECORD_BYTES                           Value = 512
                                           All VIR data files have a record length of 
                                           512 bytes.
                                           
    FILE_RECORDS                           The number of records number in the data file.
    
    LABEL_RECORDS                          The number of records of size RECORD_BYTES
                                           used by the label.
    
    START_TIME                             START_TIME gives the corrected UTC spacecraft 
                                           time for the observation start.
                                           Format:      yyyy-mm-ddThh:mm:ss.sss
                                           
    STOP_TIME                              STOP_TIME gives the corrected UTC spacecraft 
                                           time for the observation stop; this 
                                           keyword must always be present even if the 
                                           stop time is unknown or unavailable. 
                                           
    IMAGE_MID_TIME                         Corrected UTC spacecraft time for the middle 
                                           observation time.
                                           
    SPACECRAFT_CLOCK_START_COUNT           Start time represented in the native spacecraft 
                                           clock counter format.      
                                           Example:      "1/250684401.857"
                                           
    SPACECRAFT_CLOCK_STOP_COUNT            Stop time represented in the native spacecraft 
                                           clock counter format.
                                           
    INSTRUMENT_HOST_NAME                   Value      = "DAWN"
    
    INSTRUMENT_HOST_ID                     Value      = "DAWN"
    
    MISSION_PHASE_NAME                     See DAWN_MISSION.CAT for a list of valid values.
    
    INSTRUMENT_NAME                        Value = "VISIBLE AND INFRARED SPECTROMETER"
    
    INSTRUMENT_ID                          Value = "VIR"
    
    INSTRUMENT_TYPE                        Value = "IMAGING SPECTROMETER"
    
    RIGHT_ASCENSION            degrees     EME-2000 right ascension of the center pixel 
                                           in the image/spectra
                                           
    DECLINATION                degrees     EME-2000 declination of the center pixel in 
                                           the image/spectra
                                           
    TWIST_ANGLE                degrees     The twist_angle element provides the angle 
                                           of rotation about the optical axis relative to 
                                           celestial coordinates. Together with the 
                                           RIGHT_ASCENSION and DECLINATION values defines 
                                           the pointing direction and orientation 
                                           
    CELESTIAL_NORTH_CLOCK_ANGLE  degrees   North celestial clock angle evaluated at the 
                                           center pixel of the image/spectra      
                                           
    QUATERNION                             Four values compose the quaternion; see kw 
                                           QUATERNION_DESC
                                           
    QUATERNION_DESC                        The 4 parameters are calculated at the center 
                                           time of the observation which is IMAGE_MID_TIME.
                                           The quaternion has the form: w, x, y, z (i.e. 
                                           SPICE format)
                                                                                           
    SPACECRAFT_SOLAR_DISTANCE     km       The spacecraft_solar_distance element provides 
                                           the distance from the spacecraft to the center of 
                                           the sun
                                           
    SC_SUN_POSITION_VECTOR        km       The sc_sun_position_vector element indicates the 
                                           components of the position vector from observer to 
                                           sun, center expressed in J2000 coordinates, and 
                                           corrected for light time and stellar aberration, 
                                           evaluated at epoch at which image was taken
                                           
    SC_SUN_VELOCITY_VECTOR       km/s      The sc_sun_velocity_vector element indicates the 
                                           components of the velocity vector of sun relative 
                                           to observer, expressed in J2000 coordinates, and 
                                           corrected for light time, evaluated at epoch at 
                                           which image was taken
                                           
    SPICE_FILE_NAME                        Provides the name of the SPICE metakernel file, 
                                           the file that identifies kernels used in data 
                                           processing and geometry parameter calculations.
                                           e.g. "DAWN_VSH_R03.TM"
                                           
    TARGET_NAME                            Name of the observed target (e.g. "MARS", 
                                           "4 VESTA", "ALPHA CARINAE", etc.)
                                           
    TARGET_TYPE                            Target type (e.g. "PLANET", "ASTEROID", "STAR")
    
    COORDINATE_SYSTEM_NAME                 Identifier indicating the coordinate system to 
                                           which the state vectors are referenced.
                                           
    COORDINATE_SYSTEM_CENTER_NAME          This kw identifies a named target, such as the 
                                           Sun, a planet, a satellite or a spacecraft, as 
                                           being the location of the center of the reference 
                                           coordinate system. (e.g. "4 VESTA")
                                           
    SUB_SPACECRAFT_LATITUDE    degrees     Planetocentric latitude in COORDINATE_SYSTEM_NAME 
                                           coordinates from SPICE
                                           
    SUB_SPACECRAFT_LONGITUDE   degrees     Planetocentric longitude in COORDINATE_SYSTEM_NAME
                                           coordinates from SPICE
                                           
    SUB_SPACECRAFT_AZIMUTH     degrees     Value of the angle between the line from the 
                                           center of an image to the subspacecraft point and 
                                           a horizontal reference line (in the image plane) 
                                           extending from the image center to the middle 
                                           right edge of the image. From SPICE
                                           
    SPACECRAFT_ALTITUDE           km       This keyword provides the distance from the 
                                           spacecraft to the nearest point on a reference 
                                           surface of the target body measured normal to 
                                           that surface
                                           
    TARGET_CENTER_DISTANCE        km       Distance between the instrument and the center 
                                           of mass of the target, from SPICE
                                           
    SC_TARGET_POSITION_VECTOR              S/C position vector relative to the target in 
                                           planetocentric coordinates      
                                           
    SC_TARGET_VELOCITY_VECTOR              S/C velocity vector relative to the target in 
                                           planetocentric coordinates      
                                           
    LOCAL_HOUR_ANGLE                       Local hour angle at the center of the 
                                           image/spectra      
    SUB_SOLAR_LATITUDE         degrees     Sub-solar latitude on the target in 
                                           planetocentric coordinates      
                                           
    SUB_SOLAR_LONGITUDE        degrees     Sub-solar longitude on the target in 
                                           planetocentric coordinates      
                                           
    SUB_SOLAR_AZIMUTH          degrees     Sub-solar azimuth angle at the center of the 
                                           image/spectra 
                                           
    INCIDENCE_ANGLE            degrees     Incidence angle at the center of the 
                                           image/spectra
                                           
    EMISSION_ANGLE             degrees     Emission angle at the center of the 
                                           image/spectra
    
    PHASE_ANGLE                degrees     Phase angle at the center of the image/spectra 
    
    SLANT_DISTANCE                         Slant distance to the target evaluated at the 
                                           center pixel of the image      
    
    MINIMUM_LATITUDE           degrees     The MINIMUM_LATITUDE specifies the southernmost
                                           latitude of the target, computed in the 
                                           body-fixed, rotating coordinate system specified
                                           by the COORDINATE_SYSTEM_NAME keyword. For the 
                                           determination of this values, the geometric 
                                           values computed for the center of each element 
                                           of the field of view (pixel) are considered. 
                                           Each value is expressed in degrees in the 
                                           [-90°, 90°] range, F9.5 format.
    
    CENTER_LATITUDE            degrees     Center pixel planetocentric latitude for the 
                                           image/spectra (N/A for calibration targets)
    
    MAXIMUM_LATITUDE           degrees     The MAXIMUM_LATITUDE specifies the northernmost 
                                           latitude of the target, computed in the 
                                           body-fixed, rotating coordinate system specified 
                                           by the COORDINATE_SYSTEM_NAME keyword. For the 
                                           determination of this values, the geometric 
                                           values computed for the center of each element 
                                           of the field of view (pixel) are considered. 
                                           Each value is expressed in degrees in the 
                                           [-90°, 90°] range, F9.5 format.
    
    WESTERNMOST_LONGITUDE      degrees     For Planetocentric coordinates and for 
                                           Planetographic coordinates in which longitude 
                                           increases toward the east, the westernmost 
                                           (leftmost) longitude of a spatial area (e.g.,a 
                                           map, mosaic, bin, feature or region) is the 
                                           minimum numerical value of longitude unless it 
                                           crosses the Prime Meridian. Each value is 
                                           expressed in degrees, F9.5 format, in the 
    	                                   [0°, 360°] range.
    
    CENTER_LONGITUDE           degrees     Center pixel planetocentric longitude for the 
                                           image/spectra (N/A for calibration targets)
    
    EASTERNMOST_LONGITUDE      degrees     For Planetocentric coordinates and for 
                                           Planetographic coordinates in which longitude 
                                           increases toward the east, the easternmost 
                                           (rightmost) longitude of a spatial area (e.g.,a 
                                           map, mosaic, bin, feature or region) is the 
                                           maximum numercial value of longitude unless it
                                           crosses the Prime Meridian. Each value is 
                                           expressed in degrees, F9.5 format, in the 
                                           [0°, 360°] range.
    
    HORIZONTAL_PIXEL_SCALE        m        Horizontal pixel size in meters
    
    VERTICAL_PIXEL_SCALE          m        Vertical pixel size in meters
    
    NORTH_AZIMUTH              degrees     North azimuth angle evaluated at the center 
                                           pixel of the image/spectra      
    
    ORBIT_NUMBER                           Asteroid orbit number or "N/A"
    
    PROCESSING_LEVEL_ID                    CODMAC level (2 for EDR, 3 for RDR)
    
    DATA_QUALITY_ID                        Data quality indicator. Possible values are 0 
                                           if lines are missing, 1 if the data are 
                                           complete; "NULL" is unevaluated.
    
    DATA_QUALITY_DESC                      Description of data quality kw.
    
    TELEMETRY_SOURCE_ID                    This keyword identifies the EGSE used to produce 
                                           the data file.
    
    CHANNEL_ID                             Possible values: "VIS" and "IR". This keyword 
                                           identifies the instrument channel producing the 
                                           data and can have 2 possible
    
    SOFTWARE_VERSION_ID                    This keyword identifies the software used to 
                                           write the labels and format the data.
    
    INSTRUMENT_MODE_ID                     The value of this keyword identifies the 
                                           instrument mode. The valid values are the 
                                           followings:
                                              S_H_SPE_H_SPA_F
                                              S_H_SPE_L_SPA_F
                                              S_H_SPE_L_SPA_F_SUM
                                              S_L_SPE_H_SPA_F
                                              S_L_SPE_L_SPA_F
                                              S_L_SPE_L_SPA_F_SUM
                                              S_H_SPE_H_SPA_Q
                                              S_L_SPE_H_SPA_Q
                                              S_H_SPE_L_SPA_F_MEA
                                              S_L_SPE_L_SPA_F_MEA
                                              C_H_SPE_H_SPA_F
                                              C_H_SPE_L_SPA_F
                                              SPARE
                                              C_L_SPE_H_SPA_F
                                              C_L_SPE_L_SPA_F
                                              C_H_SPE_H_SPA_Q
                                              C_L_SPE_H_SPA_Q
    
    INSTRUMENT_MODE_DESC                    This keyword describes the different values that 
                                            INSTRUMENT_MODE_ID can assume 
                                            S_H_SPE_H_SPA_F: Science, high spectral high 
                                            spatial, Full slit
                                            S_H_SPE_L_SPA_F: Science, high spectral low 
                                            spatial, Full slit
                                            S_H_SPE_L_SPA_F_SUM: Science, high spectral low 
                                            spatial, Summing 
                                            S_L_SPE_H_SPA_F: Science, Low spectral high 
                                            spatial, Full slit 
                                            S_L_SPE_L_SPA_F: Science, Low spectral low 
                                            spatial, Full slit 
                                            S_L_SPE_L_SPA_F_SUM: Science, Low spectral low 
                                            spatial, Summing 
                                            S_H_SPE_H_SPA_Q: Science, high spectral high 
                                            spatial, Quarter slit
                                            S_L_SPE_H_SPA_Q: Science, low spectral high 
                                            spatial, Quarter slit
                                            S_H_SPE_L_SPA_F_MEA: Science, high spectral low 
                                            spatial, Meaning
                                            S_L_SPE_L_SPA_F_MEA: Science, low spectral low 
                                            spatial, Meaning
                                            C_H_SPE_H_SPA_F: Calibration, high spectral high 
                                            spatial, Full slit
                                            C_H_SPE_L_SPA_F: Calibration, high spectral low 
                                            spatial, Full slit
                                            SPARE: CALIBRATION Spare
                                            C_L_SPE_H_SPA_F: Calibration, low spectral high 
                                            spatial, Full slit
                                            C_L_SPE_L_SPA_F: Calibration, low spectral low 
                                            spatial, Full slit
                                            C_H_SPE_H_SPA_Q: Calibration, high spectral high 
                                            spatial, Quarter slit
                                            C_L_SPE_H_SPA_Q: Calibration, low spectral high 
                                            spatial, Quarter slit"
    
    ENCODING_TYPE                           Value (normally) =  "0" (decompressed)
    
    SCAN_MODE_ID                            Scan mirror mode identifier. It is an integer 
                                            in the range 0 to 10. 0 means that the mirror 
                                            has not been used. The VIR scan mirror performs, 
                                            when commanded, an angular movement around an 
                                            axis parallel to the slit direction (y direction). 
                                            There can be 10 different modes, each one 
                                            identifying a given angular movement. 
    
    DAWN:SCAN_PARAMETER                     See SCAN_PARAMETER_DESC. Example: 
                                            "(-1.0, 0.1, 1, 33)"
    
    SCAN_PARAMETER_DESC                     "SCAN_START_ANGLE", "SCAN_STOP_ANGLE", 
                                            "SCAN_STEP_ANGLE", "SCAN_STEP_NUMBER" 
                                            This kw describes the movement of the scan 
                                            mirror, defining start, stop and step angles. 
                                            The fourth parameter is the number of 
                                            acquisitions performed within one single scan 
                                            unit position.   
    
    DAWN:SCAN_PARAMETER_UNIT                Value = ("DEGREES", "DEGREES", "DEGREES", 
                                            "DIMENSIONLESS")
    
    FRAME_PARAMETER                         See FRAME_PARAMETER_DESC e.g. (100, 1, 5000, 5)
                                            This kw gives the details of the acquisition of 
                                            the frames. EXPOSURE_DURATION is the integration 
                                            time expressed in milliseconds; it is the 
                                            exposure time of elementary exposures when 
                                            summing is performed. FRAME_SUMMING is the 
                                            number of elementary exposures summed during a 
                                            time step (i.e, to build a frame). The product 
                                            of EXPOSURE_DURATION and FRAME_SUMMING is the 
                                            total integration time for each frame. 
                                            EXTERNAL_REPETITION_TIME is the time required 
                                            for a frame acquisition cycle (> 
                                            EXPOSURE_DURATION x FRAME_SUMMING).
                                            DARK_ACQUISITION_RATE is the number of frames 
                                            acquired between two background measurements.      
    
    FRAME_PARAMETER_DESC                    ("EXPOSURE_DURATION", "FRAME_SUMMING", 
                                            "EXTERNAL_REPETITION_TIME", 
                                            "DARK_ACQUISITION_RATE")
    
    DAWN:FRAME_PARAMETER_UNIT               Value =("S", "DIMENSIONLESS", "S", 
                                            "DIMENSIONLESS")
    
    DAWN:VIR_IR_START_X_POSITION            This keyword gives the X coordinate of the first 
                                            CCD pixel used on the IR FPA. This quantity 
                                            determines the correspondence between wavelength 
                                            and spectral channels.
    
    DAWN:VIR_IR_START_Y_POSITION            This keyword gives the Y coordinate of the first 
                                            CCD pixel used on the IR FPA. This quantity 
                                            determines the correspondence between wavelength 
                                            and spectral channels.
    
    DAWN:VIR_VIS_START_X_POSITION           This keyword gives the X coordinate of the first 
                                            CCD pixel used on the VIS FPA. This quantity 
                                            determines the correspondence between wavelength 
                                            and spectral channels.
    
    DAWN:VIR_VIS_START_Y_POSITION           This keyword gives the Y coordinate of the first 
                                            CCD pixel used on the VIS FPA. This quantity 
                                            determines the correspondence between wavelength 
                                            and spectral channels.
    
    MAXIMUM_INSTRUMENT_TEMPERATURE          See INSTRUMENT_TEMPERATURE_POINT keyword to 
                                            specify the measurement locations 
                                            e.g. (176.6, 143.6, 144.6, 74.7)
    
    INSTRUMENT_TEMPERATURE_POINT            ("FOCAL_PLANE",
                                             "TELESCOPE",
                                             "SPECTROMETER",
                                             "CRYOCOOLER")
    
    DAWN:INSTRUMENT_TEMPERATURE_UNIT   K    Value = ( "K", "K" ,"K" , "K")            
    
    PHOTOMETRIC_CORRECTION_TYPE             Value (normally) = NONE       
                                                                                           
    OBJECT = QUBE (EDR data)                                                               
    
    AXES                                    AXES is the number of data axes in the QUBE 
                                            object (always 3).
                                            AXES = 3
    
    AXIS_NAME                               Value = "(BAND, SAMPLE, LINE)"
                                            AXIS_NAME indicates the organization of the 
                                            object, bands interleaved by pixels, or BIP. It 
                                            means that a complete spectrum is written 
                                            contiguously, and spectra acquired at the same 
                                            time step are written in sequence.
    
    CORE_ITEMS                              CORE_ITEMS are the dimensions of the data cube. 
                                            The three values specified are the spectral and 
                                            spatial dimensions of the detector after binning 
                                            (derived from INSTRUMENT_MODE_ID), and the number 
                                            of frames acquired in the session.
                                            e.g. = (432, 256, 33)
    
    CORE_ITEM_BYTES                         CORE_ITEM_BYTES and CORE_ITEM_TYPE give the type 
                                            of data in the cube core: 
                                            CORE_ITEM_BYTES = 2 (16 bit integers) 
                                            for raw data, and 4 (32 bit reals) for 
                                            calibrated data, whatever the 
                                            architecture used to write the data 
                                            files (i.e., EGSE will not change byte 
                                            encoding relative to the output of the 
                                            instrument).
                                            
    CORE_ITEM_TYPE                          CORE_ITEM_BYTES and CORE_ITEM_TYPE give the type 
                                            of data in the cube core: 
                                            CORE_ITEM_TYPE = "MSB_INTEGER" (16 bit 
                                            integers, MSB encoding) for raw data, 
                                            and "IEEE_REAL" (32 bit reals) for 
                                            calibrated data, whatever the 
                                            architecture used to write the data 
                                            files (i.e., EGSE will not change byte 
                                            encoding relative to the output of the 
                                            instrument).
    
    CORE_BASE                              CORE_BASE and CORE_MULTIPLIER allow scaling of data 
                                           (useful for calibrated data only):
                                           true_value = BASE + (MULTIPLIER * stored_value).
                                           Values below the keyword CORE_VALID_MINIMUM are 
                                           reserved for special use, following an ISIS 
                                           convention.
                                           CORE_BASE = 0 always in this data set
    
    CORE_MULTIPLIER                        CORE_MULTIPLIER = 1.0 always in this data set.
    
    CORE_VALID_MINIMUM                     Values below the keyword CORE_VALID_MINIMUM are 
                                           reserved for special use, following an ISIS 
                                           convention.
                                           Value = 0
    
    CORE_NULL                              CORE_NULL is an optional code indicating invalid 
                                           data.
                                           Value = -32768
    
    CORE_LOW_REPR_SATURATION               Value = -32767 – always in this data set
    
    CORE_LOW_INSTR_SATURATION              Value = -32767 – always in this data set
    
    CORE_HIGH_REPR_SATURATION              Value = -32767 – always in this data set
    
    CORE_HIGH_INSTR_SATURATION             Value = -32767 – always in this data set
    
    CORE_NAME                              CORE_NAME is the physical quantity recorded in 
                                           the cube (required for ISIS).
                                           Value = "RAW_DATA_NUMBER"
    
    CORE_UNIT                              CORE_UNIT is the unit of data stored in the cube.
                                           Value = "DIMENSIONLESS"
    
    SUFFIX_BYTES                           Number of suffix bytes; it is always 4 only for 
                                           ISIS compliance, since there are no suffix planes
    
    SUFFIX_ITEMS                           Suffix planes: always (0,0,0) because there are 
                                           no suffix planes
    
    BAND_BIN_CENTER                        Vector containing the center wavelength value to 
                                           which each band is corresponding 
    
    BAND_BIN_WIDTH                         Vector containing the width of the wavelength 
                                           value to which each band is corresponding
    
    BAND_BIN_UNIT                          Units in which the wavelength are given
    
    BAND_BIN_ORIGINAL_BAND                 Vector giving the correspondence with the 
                                           original bands
    ===========================================================================================  

    6.2.1 VIR Local keywords

    A small number of local keywords has been defined in order to better describe VIR data. The VIR local keywords, with their meaning and values, are the following:

       ===========================================================================================
       Table 16. VIR Local keywords
       -------------------------------------------------------------------------------------------
       Keyword                          Value  Value Description
                                        Units
       ===========================================================================================
       DAWN:SCAN_PARAMETER                     This kw defines the movement of the scan mirror, 
                                               defining start, stop and step angles. The fourth 
                                               parameter is the number of acquisitions performed 
                                               within one single scan unit position (as 
                                               described by SCAN_PARAMETER_DESC). 
                                               Example: "(-1.0, 0.1, 1, 33)"
                                               
       DAWN:SCAN_PARAMETER_UNIT                This keyword defines the units used in 
                                               SCAN_PARAMETER
                                               Value =  ("DEGREES", "DEGREES", "DEGREES", 
                                               "DIMENSIONLESS")
                                               
       DAWN:FRAME_PARAMETER_UNIT               This keyword defines the units used in 
                                               FRAME_PARAMETER
                                               Value = ("S", "DIMENSIONLESS", "S", 
                                               "DIMENSIONLESS")
                                               
       DAWN:INSTRUMENT_TEMPERATURE_UNIT   K    This keyword defines the units of 
                                               MAXIMUM_INSTRUMENT_TEMPERATURE
                                               Value = ("K", " K", " K", " K)
                                               
       DAWN:VIR_IR_START_X_POSITION            This keyword gives the X coordinate of the first 
                                               CCD pixel used on the IR FPA (spectral pixel). 
                                               This quantity determines the correspondence 
                                               between wavelength and spectral channels.
                                               
       DAWN:VIR_IR_START_Y_POSITION            This keyword gives the Y coordinate of the first 
                                               CCD pixel used on the IR FPA (spatial pixel). 
                                               This quantity determines the correspondence 
                                               between wavelength and spectral channels.
                                               
       DAWN:VIR_VIS_START_X_POSITION           This keyword gives the X coordinate of the first 
                                               CCD pixel used on the VIS FPA (spectral pixel). 
                                               This quantity determines the correspondence 
                                               between wavelength and spectral channels.
                                               
       DAWN:VIR_VIS_START_Y_POSITION           This keyword gives the Y coordinate of the first 
                                               CCD pixel used on the VIS FPA (spatial pixel). 
                                               This quantity determines the correspondence 
                                               between wavelength and spectral channels.
       ===========================================================================================  

    Appendix A. Sample PDS Labels

    Data Product Labels: EDR data

    This is an example of a detached label for an IR EDR file, named VIR_IR_1A_1_369819195_2.QUB. The data have been acquired with the infrared channel, during the Vesta Transfer to HAMO phase of the mission.

    PDS_VERSION_ID = PDS3                                                         
    LABEL_REVISION_NOTE = "MTC_11-10-2011"                                        
                                                                                  
    /* Dataset and Product Information */                                         
    DATA_SET_NAME = "DAWN VIR RAW (EDR) VESTA INFRARED SPECTRA V1.0"              
    DATA_SET_ID = "DAWN-A-VIR-2-EDR-IR-VESTA-SPECTRA-V1.0"                        
    PRODUCT_ID = "VIR_IR_1A_1_369819195"                                          
    PRODUCT_TYPE = EDR                                                            
    PRODUCER_FULL_NAME = "A. CORADINI"                                            
    PRODUCER_INSTITUTION_NAME = "ISTITUTO NAZIONALE DI ASTROFISICA"               
    PRODUCT_CREATION_TIME = 2014-01-02T14:26:40.300                               
    PRODUCT_VERSION_ID = "02"                                                     
                                                                                  
    /* File Information */                                                        
    RECORD_TYPE = FIXED_LENGTH                                                    
    RECORD_BYTES = 512                                                            
    FILE_RECORDS = 26784                                                          
    LABEL_RECORDS = 46                                                            
                                                                                  
    /* Time Information */                                                        
    START_TIME = 2011-09-20T19:32:08.774                                          
    STOP_TIME = 2011-09-20T19:42:18.516                                           
    IMAGE_MID_TIME = 2011-09-20T19:37:13.645                                      
    SPACECRAFT_CLOCK_START_COUNT = "1/369819194.8588"                             
    SPACECRAFT_CLOCK_STOP_COUNT = "1/369819804.6010"                              
                                                                                  
    /* Mission description parameters */                                          
    INSTRUMENT_HOST_NAME = "DAWN"                                                 
    INSTRUMENT_HOST_ID = "DAWN"                                                   
    MISSION_PHASE_NAME = "VESTA TRANSFER TO HAMO (VTH)"                           
                                                                                  
    /* Instrument description parameters */                                       
    INSTRUMENT_NAME = "VISIBLE AND INFRARED SPECTROMETER"                         
    INSTRUMENT_ID = "VIR"                                                         
    INSTRUMENT_TYPE = "IMAGING SPECTROMETER"                                      
    DESCRIPTION = "Geometrical data use the Claudia Double-Prime                  
    coordinate system. For further information please refer to the coordinate     
    system document in the Document directory"                                    
                                                                                  
    /* Celestial Geometry                                       */                
    RIGHT_ASCENSION                  =  294.982 <degrees>                   
    DECLINATION                      =  -45.862 <degrees>                   
    TWIST_ANGLE                      =  212.773 <degrees>                   
    CELESTIAL_NORTH_CLOCK_ANGLE      =  327.227 <degrees>                   
    QUATERNION                       = (  0.18145,                                
                                        -0.06296,                                 
                                        -0.92459,                                 
                                         0.32901 )                                
    QUATERNION_DESC                  = "                                          
        Above parameters are calculated at the center time of the observation     
        which is 2011-09-20T19:37:13.645.  The quaternion has the form:           
        w, x, y, z (i.e. SPICE format)."                                          
                                                                                  
    /* Solar geometry                                           */                
    SPACECRAFT_SOLAR_DISTANCE        =   341460541.0 <km>                   
    SC_SUN_POSITION_VECTOR           = ( -282638804.9 <km>,                 
                                         162420911.9 <km>,                  
                                         101636875.2 <km> )                 
                                                                                  
    SC_SUN_VELOCITY_VECTOR           = ( -12.248 <km/s>,                    
                                        -15.261 <km/s>,                     
                                         -4.342 <km/s> )                    
                                                                                  
    /* SPICE Kernels                                            */                
    SPICE_FILE_NAME                  = "DAWN_VTH_R02.TM"                          
                                                                                  
    TARGET_NAME                      = "4 VESTA"                                  
    TARGET_TYPE                      = "ASTEROID"                                 
                                                                                  
    /* COORDINATE SYSTEM                                        */                
    COORDINATE_SYSTEM_NAME           = "VESTA_FIXED"                              
    COORDINATE_SYSTEM_CENTER_NAME    = "4 VESTA"                                  
                                                                                  
    /* Geometry in "VESTA_FIXED" coordinates from SPICE         */                
    SUB_SPACECRAFT_LATITUDE          =  -4.168 <degrees>                    
    SUB_SPACECRAFT_LONGITUDE         =  254.994 <degrees>                   
    SUB_SPACECRAFT_AZIMUTH           = 139.951 <degrees>                    
    SPACECRAFT_ALTITUDE              =         667.1 <km>                   
    TARGET_CENTER_DISTANCE           =         947.3 <km>                   
    SC_TARGET_POSITION_VECTOR        = (         317.0 <km>,                
                                               -650.3 <km>,                 
                                               -612.8 <km> )                
                                                                                  
    SC_TARGET_VELOCITY_VECTOR        = (   0.053 <km/s>,                    
                                         -0.073 <km/s>,                     
                                          0.101 <km/s> )                    
                                                                                  
    LOCAL_HOUR_ANGLE                 = 147.408 <degrees>                    
    SUB_SOLAR_LATITUDE               = -27.351 <degrees>                    
    SUB_SOLAR_LONGITUDE              =  287.585 <degrees>                   
    SUB_SOLAR_AZIMUTH                = 108.928 <degrees>                    
                                                                                  
    /* Illumination                                             */                
    INCIDENCE_ANGLE                  =  31.075 <degrees>                    
    EMISSION_ANGLE                   =  16.426 <degrees>                    
    PHASE_ANGLE                      =  40.769 <degrees>                    
                                                                                  
    /* Image parameters                                         */                
    SLANT_DISTANCE                   =         673.1 <km>                   
    MINIMUM_LATITUDE                 = -17.882 <degrees>                    
    CENTER_LATITUDE                  = -11.818 <degrees>                    
    MAXIMUM_LATITUDE                 =  -6.141 <degrees>                    
    WESTERNMOST_LONGITUDE            =  263.691 <degrees>                   
    CENTER_LONGITUDE                 =  254.711 <degrees>                   
    EASTERNMOST_LONGITUDE            =  245.728 <degrees>                   
    HORIZONTAL_PIXEL_SCALE           =   168.286 <m/pixel>                  
    VERTICAL_PIXEL_SCALE             =   168.286 <m/pixel>                  
    NORTH_AZIMUTH                    = 136.862 <degrees>                    
    ORBIT_NUMBER                     = "N/A"                                      
                                                                                  
    /* Data description parameters */                                             
    PROCESSING_LEVEL_ID = "2"                                                     
    DATA_QUALITY_ID = "1"                                                         
    DATA_QUALITY_DESC = "0:INCOMPLETE; 1:COMPLETE"                                
    TELEMETRY_SOURCE_ID = "EGSE"                                                  
    CHANNEL_ID = "IR"                                                             
    SOFTWARE_VERSION_ID = "EGSE V1.14,AMDLSpace"                                  
                                                                                  
    /* Instrument status */                                                       
    INSTRUMENT_MODE_ID = "S_H_SPE_H_SPA_F"                                        
    INSTRUMENT_MODE_DESC =                                                        
     "S_H_SPE_H_SPA_F: Science, high spectral high spatial, Full slit             
      S_H_SPE_L_SPA_F: Science, high spectral low spatial, Full slit              
      S_H_SPE_L_SPA_F_SUM: Science, high spectral low spatial, Summing            
      S_L_SPE_H_SPA_F: Science, Low spectral high spatial, Full slit              
      S_L_SPE_L_SPA_F: Science, Low spectral low spatial, Full slit               
      S_L_SPE_L_SPA_F_SUM: Science, Low spectral low spatial, Summing             
      S_H_SPE_H_SPA_Q: Science, high spectral high spatial, Quarter slit          
      S_L_SPE_H_SPA_Q: Science, low spectral high spatial, Quarter slit           
      S_H_SPE_L_SPA_F_MEA: Science, high spectral low spatial, Meaning            
      S_L_SPE_L_SPA_F_MEA: Science, low spectral low spatial, Meaning             
      C_H_SPE_H_SPA_F: Calibration, high spectral high spatial, Full slit         
      C_H_SPE_L_SPA_F: Calibration, high spectral low spatial, Full slit          
      SPARE: CALIBRATION Spare                                                    
      C_L_SPE_H_SPA_F: Calibration, low spectral high spatial, Full slit          
      C_L_SPE_L_SPA_F: Calibration, low spectral low spatial, Full slit           
      C_H_SPE_H_SPA_Q: Calibration, high spectral high spatial, Quarter slit      
      C_L_SPE_H_SPA_Q: Calibration, low spectral high spatial, Quarter slit"      
    ENCODING_TYPE = "N/A"                                                         
    SCAN_MODE_ID = "4"                                                            
    DAWN:SCAN_PARAMETER = (-3.7, -3.7, 4500, 60)                                  
    SCAN_PARAMETER_DESC = ("SCAN_START_ANGLE", "SCAN_STOP_ANGLE",                 
     "SCAN_STEP_ANGLE","SCAN_STEP_NUMBER")                                        
    DAWN:SCAN_PARAMETER_UNIT = ("DEGREES", "DEGREES", "DEGREES","DIMENSIONLESS")  
    FRAME_PARAMETER = (0.7, 1, 10, 59)                                            
    FRAME_PARAMETER_DESC = ("EXPOSURE_DURATION", "FRAME_SUMMING",                 
    "EXTERNAL_REPETITION_TIME", "DARK_ACQUISITION_RATE")                          
    DAWN:FRAME_PARAMETER_UNIT = ("S", "DIMENSIONLESS", "S", "DIMENSIONLESS")      
    DAWN:VIR_IR_START_X_POSITION=1                                                
    DAWN:VIR_IR_START_Y_POSITION=7                                                
    MAXIMUM_INSTRUMENT_TEMPERATURE = (80.5, 138.6, 138.6, 74.6)                   
    INSTRUMENT_TEMPERATURE_POINT = ("FOCAL_PLANE", "TELESCOPE", "SPECTROMETER",   
    "CRYOCOOLER")                                                                 
    DAWN:INSTRUMENT_TEMPERATURE_UNIT = ("K", "K", "K", "K")                       
    PHOTOMETRIC_CORRECTION_TYPE = "NONE"                                          
                                                                                  
    /* Pointers to first record of objects in file */                             
    ^HISTORY = 48                                                                 
    OBJECT = HISTORY                                                              
    END_OBJECT = HISTORY                                                          
    ^QUBE = "VIR_IR_1A_1_369819195_2.QUB"                                         
                                                                                  
    /* Description of the object contained in the file */                         
    OBJECT = QUBE                                                                 
                                                                                  
    /*    Standard cube Keywords */                                               
     AXES = 3                                                                     
     AXIS_NAME = (BAND, SAMPLE, LINE)                                             
     CORE_ITEMS = ( 432, 256, 62 )                                                
     CORE_ITEM_BYTES = 2                                                          
     CORE_ITEM_TYPE = MSB_INTEGER                                                 
     CORE_BASE = 0.0                                                              
     CORE_MULTIPLIER = 1.0                                                        
     CORE_VALID_MINIMUM = 0                                                       
     CORE_NULL = -32768                                                           
     CORE_LOW_REPR_SATURATION = -32767                                            
     CORE_LOW_INSTR_SATURATION = -32767                                           
     CORE_HIGH_REPR_SATURATION = -32767                                           
     CORE_HIGH_INSTR_SATURATION = -32767                                          
     CORE_NAME = "RAW DATA NUMBER"                                                
     CORE_UNIT = DIMENSIONLESS                                                    
                                                                                  
    /*  Suffix definition */                                                      
     SUFFIX_BYTES = 4                                                             
     SUFFIX_ITEMS = (    0,   0,    0)                                            
                                                                                  
    /* Spectral axis description */                                               
                                                                                  
        GROUP = BAND_BIN                                                          
                                                                                  
        BAND_BIN_CENTER =                                                         
    (1.021,1.030,1.040,1.049,1.059,1.068,1.078,1.087,1.096,1.106,1.115,1.125,     
    1.134,1.144,1.153,1.163,1.172,1.182,1.191,1.200,1.210,1.219,1.229,1.238,      
    1.248,1.257,1.267,1.276,1.286,1.295,1.305,1.314,1.323,1.333,1.342,1.352,      
    1.361,1.371,1.380,1.390,1.399,1.409,1.418,1.428,1.437,1.446,1.456,1.465,      
    1.475,1.484,1.494,1.503,1.513,1.522,1.532,1.541,1.550,1.560,1.569,1.579,      
    1.588,1.598,1.607,1.617,1.626,1.636,1.645,1.655,1.664,1.673,1.683,1.692,      
    1.702,1.711,1.721,1.730,1.740,1.749,1.759,1.768,1.777,1.787,1.796,1.806,      
    1.815,1.825,1.834,1.844,1.853,1.863,1.872,1.882,1.891,1.900,1.910,1.919,      
    1.929,1.938,1.948,1.957,1.967,1.976,1.986,1.995,2.005,2.014,2.023,2.033,      
    2.042,2.052,2.061,2.071,2.080,2.090,2.099,2.109,2.118,2.127,2.137,2.146,      
    2.156,2.165,2.175,2.184,2.194,2.203,2.213,2.222,2.232,2.241,2.250,2.260,      
    2.269,2.279,2.288,2.298,2.307,2.317,2.326,2.336,2.345,2.355,2.364,2.373,      
    2.383,2.392,2.402,2.411,2.421,2.430,2.440,2.449,2.459,2.468,2.477,2.487,      
    2.496,2.506,2.515,2.525,2.534,2.544,2.553,2.563,2.572,2.582,2.591,2.600,      
    2.610,2.619,2.629,2.638,2.648,2.657,2.667,2.676,2.686,2.695,2.705,2.714,      
    2.723,2.733,2.742,2.752,2.761,2.771,2.780,2.790,2.799,2.809,2.818,2.827,      
    2.837,2.846,2.856,2.865,2.875,2.884,2.894,2.903,2.913,2.922,2.932,2.941,      
    2.950,2.960,2.969,2.979,2.988,2.998,3.007,3.017,3.026,3.036,3.045,3.055,      
    3.064,3.073,3.083,3.092,3.102,3.111,3.121,3.130,3.140,3.149,3.159,3.168,      
    3.177,3.187,3.196,3.206,3.215,3.225,3.234,3.244,3.253,3.263,3.272,3.282,      
    3.291,3.300,3.310,3.319,3.329,3.338,3.348,3.357,3.367,3.376,3.386,3.395,      
    3.405,3.414,3.423,3.433,3.442,3.452,3.461,3.471,3.480,3.490,3.499,3.509,      
    3.518,3.527,3.537,3.546,3.556,3.565,3.575,3.584,3.594,3.603,3.613,3.622,      
    3.632,3.641,3.650,3.660,3.669,3.679,3.688,3.698,3.707,3.717,3.726,3.736,      
    3.745,3.754,3.764,3.773,3.783,3.792,3.802,3.811,3.821,3.830,3.840,3.849,      
    3.859,3.868,3.877,3.887,3.896,3.906,3.915,3.925,3.934,3.944,3.953,3.963,      
    3.972,3.982,3.991,4.000,4.010,4.019,4.029,4.038,4.048,4.057,4.067,4.076,      
    4.086,4.095,4.104,4.114,4.123,4.133,4.142,4.152,4.161,4.171,4.180,4.190,      
    4.199,4.209,4.218,4.227,4.237,4.246,4.256,4.265,4.275,4.284,4.294,4.303,      
    4.313,4.322,4.332,4.341,4.350,4.360,4.369,4.379,4.388,4.398,4.407,4.417,      
    4.426,4.436,4.445,4.454,4.464,4.473,4.483,4.492,4.502,4.511,4.521,4.530,      
    4.540,4.549,4.559,4.568,4.577,4.587,4.596,4.606,4.615,4.625,4.634,4.644,      
    4.653,4.663,4.672,4.682,4.691,4.700,4.710,4.719,4.729,4.738,4.748,4.757,      
    4.767,4.776,4.786,4.795,4.804,4.814,4.823,4.833,4.842,4.852,4.861,4.871,      
    4.880,4.890,4.899,4.909,4.918,4.927,4.937,4.946,4.956,4.965,4.975,4.984,      
    4.994,5.003,5.013,5.022,5.032,5.041,5.050,5.060,5.069,5.079,5.088,5.098)      
                                                                                  
          BAND_BIN_WIDTH  =                                                       
    (0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0139,       
    0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139, 
    0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0138,0.0138,0.0138, 
    0.0138,0.0138,0.0138,0.0138,0.0138,0.0138,0.0138,0.0137,0.0137,0.0137,0.0137, 
    0.0137,0.0137,0.0137,0.0137,0.0137,0.0136,0.0136,0.0136,0.0136,0.0136,0.0136, 
    0.0136,0.0135,0.0135,0.0135,0.0135,0.0135,0.0135,0.0135,0.0134,0.0134,0.0134, 
    0.0134,0.0134,0.0134,0.0134,0.0133,0.0133,0.0133,0.0133,0.0133,0.0133,0.0132, 
    0.0132,0.0132,0.0132,0.0132,0.0132,0.0131,0.0131,0.0131,0.0131,0.0131,0.0131, 
    0.0130,0.0130,0.0130,0.0130,0.0130,0.0129,0.0129,0.0129,0.0129,0.0129,0.0129, 
    0.0128,0.0128,0.0128,0.0128,0.0128,0.0128,0.0127,0.0127,0.0127,0.0127,0.0127, 
    0.0126,0.0126,0.0126,0.0126,0.0126,0.0126,0.0125,0.0125,0.0125,0.0125,0.0125, 
    0.0125,0.0124,0.0124,0.0124,0.0124,0.0124,0.0124,0.0123,0.0123,0.0123,0.0123, 
    0.0123,0.0123,0.0122,0.0122,0.0122,0.0122,0.0122,0.0122,0.0121,0.0121,0.0121, 
    0.0121,0.0121,0.0121,0.0121,0.0120,0.0120,0.0120,0.0120,0.0120,0.0120,0.0120, 
    0.0119,0.0119,0.0119,0.0119,0.0119,0.0119,0.0119,0.0118,0.0118,0.0118,0.0118, 
    0.0118,0.0118,0.0118,0.0118,0.0118,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117, 
    0.0117,0.0117,0.0117,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116, 
    0.0116,0.0116,0.0116,0.0116,0.0116,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116, 
    0.0116,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0118, 
    0.0118,0.0118,0.0118,0.0118,0.0118,0.0118,0.0119,0.0119,0.0119,0.0119,0.0119, 
    0.0119,0.0120,0.0120,0.0120,0.0120,0.0120,0.0121,0.0121,0.0121,0.0121,0.0121, 
    0.0122,0.0122,0.0122,0.0122,0.0122,0.0123,0.0123,0.0123,0.0123,0.0124,0.0124, 
    0.0124,0.0124,0.0125,0.0125,0.0125,0.0125,0.0126,0.0126,0.0126,0.0126,0.0127, 
    0.0127,0.0127,0.0128,0.0128,0.0128,0.0128,0.0129,0.0129,0.0129,0.0130,0.0130, 
    0.0130,0.0131,0.0131,0.0131,0.0132,0.0132,0.0132,0.0133,0.0133,0.0133,0.0134, 
    0.0134,0.0134,0.0135,0.0135,0.0135,0.0136,0.0136,0.0137,0.0137,0.0137,0.0138, 
    0.0138,0.0139,0.0139,0.0139,0.0140,0.0140,0.0141,0.0141,0.0141,0.0142,0.0142, 
    0.0143,0.0143,0.0144,0.0144,0.0144,0.0145,0.0145,0.0146,0.0146,0.0147,0.0147, 
    0.0148,0.0148,0.0148,0.0149,0.0149,0.0150,0.0150,0.0151,0.0151,0.0152,0.0152, 
    0.0153,0.0153,0.0154,0.0154,0.0155,0.0155,0.0156,0.0156,0.0157,0.0157,0.0158, 
    0.0158,0.0159,0.0159,0.0160,0.0160,0.0161,0.0162,0.0162,0.0163,0.0163,0.0164, 
    0.0164,0.0165,0.0165,0.0166,0.0167,0.0167,0.0168,0.0168,0.0169,0.0169,0.0170, 
    0.0171,0.0171,0.0172,0.0172,0.0173,0.0173,0.0174,0.0175,0.0175,0.0176,0.0176, 
    0.0177,0.0178,0.0178,0.0179,0.0180,0.0180,0.0181,0.0181,0.0182,0.0183,0.0183, 
    0.0184,0.0185,0.0185,0.0186)                                                  
                                                                                  
     BAND_BIN_UNIT = MICROMETER                                                   
                                                                                  
        BAND_BIN_ORIGINAL_BAND =                                                  
    (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,  
     29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,  
     54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,  
     79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,  
    103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,  
    122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,  
    141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,  
    160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,  
    179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,  
    198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,  
    217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,  
    236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,  
    255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,  
    274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,  
    293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,  
    312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,  
    331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,349,  
    350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,  
    369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,  
    388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,  
    407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,  
    426,427,428,429,430,431,432)                                                  
                                                                                  
    END_GROUP = BAND_BIN                                                          
                                                                                  
    END_OBJECT                     = QUBE                                         
    END                                                                           
                                                                                  
    OBJECT = HISTORY                                                              
                                                                                  
                                                                                  
                                                                                  
    END_OBJECT = HISTORY                                                          
                                                                                    

    Here follows the detached label of the file containing the housekeeping information related to the IR qube with the filename VIR_IR_1A_1_369819195_2.QUB. The file with the housekeeping information is named "VIR_IR_1A_1_369819195_HK_2.TAB".

    PDS_VERSION_ID               = "PDS3"                                         
    DATA_SET_ID                  = "DAWN-A-VIR-2-EDR-IR-VESTA-SPECTRA-V1.0"       
    PRODUCT_ID                   = "VIR_IR_1A_1_369819195_HK"                     
    PRODUCT_TYPE                 = "ENGINEERING_DATA"                             
    PRODUCT_VERSION_ID           = "02"                                           
    PRODUCT_CREATION_TIME        = 2014-01-02T14:26:40.300                        
                                                                                  
    RECORD_TYPE                  = FIXED_LENGTH                                   
    RECORD_BYTES                 = 288                                            
    FILE_RECORDS                 = 62                                             
                                                                                  
    START_TIME                   = 2011-09-20T19:32:08.774                        
    STOP_TIME                    = 2011-09-20T19:42:18.516                        
    SPACECRAFT_CLOCK_START_COUNT = "1/369819194.8588"                             
    SPACECRAFT_CLOCK_STOP_COUNT  = "1/369819804.6010"                             
                                                                                  
    INSTRUMENT_HOST_NAME         = "DAWN"                                         
    INSTRUMENT_HOST_ID           = "DAWN"                                         
    MISSION_PHASE_NAME           = "VESTA TRANSFER TO HAMO (VTH)"                 
    TARGET_NAME                  = "4 VESTA"                                      
    INSTRUMENT_NAME              = "VISIBLE AND INFRARED SPECTROMETER"            
    INSTRUMENT_ID                = "VIR"                                          
    DESCRIPTION                  = ""                                             
                                                                                  
    ^TABLE                       = "VIR_IR_1A_1_369819195_HK_2.TAB"               
    OBJECT                       = TABLE                                          
      INTERCHANGE_FORMAT          = ASCII                                         
      ROWS                        = 62                                            
      COLUMNS                     = 33                                            
      ROW_BYTES                   = 288                                           
      DESCRIPTION                 = ""                                            
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "VERSION, TYPE, SECONDARY HEADER FLAG"        
        COLUMN_NUMBER             = 1                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 1                                             
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "APID"                                        
        COLUMN_NUMBER             = 2                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 4                                             
        BYTES                     = 3                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "PACKET SEQUENCE CONTROL"                     
        COLUMN_NUMBER             = 3                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 8                                             
        BYTES                     = 5                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "PACKETS LENGTH"                              
        COLUMN_NUMBER             = 4                                             
        UNIT                      = "N/A"                                         
                                                                                  
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 14                                            
        BYTES                     = 4                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SCET TIME (CLOCK)"                           
        COLUMN_NUMBER             = 5                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 19                                            
        BYTES                     = 12                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "FRAME NUMBER"                                
        COLUMN_NUMBER             = 6                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 34                                            
        BYTES                     = 3                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "FRAME COUNT"                                 
        COLUMN_NUMBER             = 7                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 38                                            
        BYTES                     = 3                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SUBFRAME COUNT"                              
        COLUMN_NUMBER             = 8                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 42                                            
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "PACKETS COUNT"                               
        COLUMN_NUMBER             = 9                                             
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 45                                            
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SHUTTER STATUS"                              
        COLUMN_NUMBER             = 10                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 48                                            
        BYTES                     = 8                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "CHANNEL ID"                                  
        COLUMN_NUMBER             = 11                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 57                                            
        BYTES                     = 3                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "COMPRESSION MODE"                            
        COLUMN_NUMBER             = 12                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 61                                            
        BYTES                     = 20                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SPECTRAL RANGE"                              
        COLUMN_NUMBER             = 13                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 82                                            
        BYTES                     = 24                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "CURRENT MODE"                                
        COLUMN_NUMBER             = 14                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 107                                           
        BYTES                     = 12                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "CURRENT SUBMODE"                             
        COLUMN_NUMBER             = 15                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 120                                           
        BYTES                     = 14                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "IR EXPO"                                     
        COLUMN_NUMBER             = 16                                            
        UNIT                      = "S"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 135                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "IR TEMP"                                     
        COLUMN_NUMBER             = 17                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 146                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "CCD EXPO"                                    
        COLUMN_NUMBER             = 18                                            
        UNIT                      = "S"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 157                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "CCD TEMP"                                    
        COLUMN_NUMBER             = 19                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 168                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "MIRROR SIN"                                  
        COLUMN_NUMBER             = 20                                            
        UNIT                      = "DIMENSIONLESS"                               
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 179                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "MIRROR COS"                                  
        COLUMN_NUMBER             = 21                                            
        UNIT                      = "DIMENSIONLESS"                               
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 190                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SPECT TEMP"                                  
        COLUMN_NUMBER             = 22                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 201                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "TELE TEMP"                                   
        COLUMN_NUMBER             = 23                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 212                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "COLD TIP TEMP"                               
        COLUMN_NUMBER             = 24                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 223                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "RADIATOR TEMP"                               
        COLUMN_NUMBER             = 25                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 234                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SU MOTOR CURR"                               
        COLUMN_NUMBER             = 26                                            
        UNIT                      = "A"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 245                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "LEDGE TEMP"                                  
        COLUMN_NUMBER             = 27                                            
        UNIT                      = "K"                                           
        DATA_TYPE                 = ASCII_REAL                                    
        START_BYTE                = 256                                           
        BYTES                     = 10                                            
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "START NOISY BITS"                            
        COLUMN_NUMBER             = 28                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 267                                           
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "END NOISY BITS"                              
        COLUMN_NUMBER             = 29                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 270                                           
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "CR ROW"                                      
        COLUMN_NUMBER             = 30                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 273                                           
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "NOF NOISY BITS"                              
        COLUMN_NUMBER             = 31                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 276                                           
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SUBFRAME DATA"                               
        COLUMN_NUMBER             = 32                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 279                                           
        BYTES                     = 5                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = "SEQ STEP"                                    
        COLUMN_NUMBER             = 33                                            
        UNIT                      = "N/A"                                         
        DATA_TYPE                 = ASCII_INTEGER                                 
        START_BYTE                = 285                                           
        BYTES                     = 2                                             
        DESCRIPTION               = ""                                            
      END_OBJECT                  = COLUMN                                        
    END_OBJECT                    = TABLE                                         
    END                                                                             

    Data Product Labels: RDR data

    Here follows the detached label of the RDR qube called : VIR_IR_1B_1_369819195_2.QUB

    PDS_VERSION_ID = PDS3                                                         
    LABEL_REVISION_NOTE = "MTC_11-10-2011"                                        
                                                                                  
    /* Dataset and Product Information */                                         
    DATA_SET_NAME = "DAWN VIR CAL (RDR) VESTA INFRARED SPECTRA V1.0"              
    DATA_SET_ID = "DAWN-A-VIR-3-RDR-IR-VESTA-SPECTRA-V1.0"                        
    PRODUCT_ID = "VIR_IR_1B_1_369819195"                                          
    PRODUCT_TYPE = RDR                                                            
    PRODUCER_FULL_NAME = "A. CORADINI"                                            
    PRODUCER_INSTITUTION_NAME = "ISTITUTO NAZIONALE DI ASTROFISICA"               
    PRODUCT_CREATION_TIME = 2014-02-04T10:28:31.476                               
    PRODUCT_VERSION_ID = "02"                                                     
                                                                                  
    /* File Information */                                                        
    RECORD_TYPE = FIXED_LENGTH                                                    
    RECORD_BYTES = 512                                                            
    FILE_RECORDS = 49                                                             
    LABEL_RECORDS = 48                                                            
                                                                                  
    /* Time Information */                                                        
    START_TIME = 2011-09-20T19:32:08.774                                          
    STOP_TIME = 2011-09-20T19:42:18.516                                           
    IMAGE_MID_TIME = 2011-09-20T19:37:13.645                                      
    SPACECRAFT_CLOCK_START_COUNT = "1/369819194.8588"                             
    SPACECRAFT_CLOCK_STOP_COUNT = "1/369819804.6010"                              
                                                                                  
    /* Mission description parameters */                                          
    INSTRUMENT_HOST_NAME = "DAWN"                                                 
    INSTRUMENT_HOST_ID = "DAWN"                                                   
    MISSION_PHASE_NAME = "VESTA TRANSFER TO HAMO (VTH)"                           
                                                                                  
    /* Instrument description parameters */                                       
    INSTRUMENT_NAME = "VISIBLE AND INFRARED SPECTROMETER"                         
    INSTRUMENT_ID = "VIR"                                                         
    INSTRUMENT_TYPE = "IMAGING SPECTROMETER"                                      
    DESCRIPTION = "Geometrical data use the Claudia Double-Prime                  
    coordinate system. For further information please refer to the coordinate     
    system document in the Document directory"                                    
                                                                                  
    /* Celestial Geometry                                       */                
    RIGHT_ASCENSION                  =  294.982 <degrees>                   
    DECLINATION                      =  -45.862 <degrees>                   
    TWIST_ANGLE                      =  212.773 <degrees>                   
    CELESTIAL_NORTH_CLOCK_ANGLE      =  327.227 <degrees>                   
    QUATERNION                       = (  0.18145,                                
                                         -0.06296,                                
                                         -0.92459,                                
                                          0.32901 )                               
    QUATERNION_DESC                  = "                                          
         Above parameters are calculated at the center time of the observation    
         which is 2011-09-20T19:37:13.645.  The quaternion has the form:          
         w, x, y, z (i.e. SPICE format)."                                         
                                                                                  
    /* Solar geometry                                           */                
    SPACECRAFT_SOLAR_DISTANCE        =   341460541.0 <km>                   
    SC_SUN_POSITION_VECTOR           = ( -282638804.9 <km>,                 
                                          162420911.9 <km>,                 
                                          101636875.2 <km> )                
                                                                                  
    SC_SUN_VELOCITY_VECTOR           = ( -12.248 <km/s>,                    
                                         -15.261 <km/s>,                    
                                          -4.342 <km/s> )                   
                                                                                  
    /* SPICE Kernels                                            */                
    SPICE_FILE_NAME                  = "DAWN_VTH_R02.TM"                          
                                                                                  
    TARGET_NAME                      = "4 VESTA"                                  
    TARGET_TYPE                      = "ASTEROID"                                 
                                                                                  
    /* COORDINATE SYSTEM                                        */                
    COORDINATE_SYSTEM_NAME           = "VESTA_FIXED"                              
    COORDINATE_SYSTEM_CENTER_NAME    = "4 VESTA"                                  
                                                                                  
    /* Geometry in "VESTA_FIXED" coordinates from SPICE         */                
    SUB_SPACECRAFT_LATITUDE          =  -4.168 <degrees>                    
    SUB_SPACECRAFT_LONGITUDE         =  254.994 <degrees>                   
    SUB_SPACECRAFT_AZIMUTH           = 139.951 <degrees>                    
    SPACECRAFT_ALTITUDE              =         667.1 <km>                   
    TARGET_CENTER_DISTANCE           =         947.3 <km>                   
    SC_TARGET_POSITION_VECTOR        = (         317.0 <km>,                
                                                -650.3 <km>,                
                                                -612.8 <km> )               
                                                                                  
    SC_TARGET_VELOCITY_VECTOR        = (   0.053 <km/s>,                    
                                          -0.073 <km/s>,                    
                                           0.101 <km/s> )                   
                                                                                  
    LOCAL_HOUR_ANGLE                 = 147.408 <degrees>                    
    SUB_SOLAR_LATITUDE               = -27.351 <degrees>                    
    SUB_SOLAR_LONGITUDE              =  287.585 <degrees>                   
    SUB_SOLAR_AZIMUTH                = 108.928 <degrees>                    
                                                                                  
    /* Illumination                                             */                
    INCIDENCE_ANGLE                  =  31.075 <degrees>                    
    EMISSION_ANGLE                   =  16.426 <degrees>                    
    PHASE_ANGLE                      =  40.769 <degrees>                    
                                                                                  
    /* Image parameters                                         */                
    SLANT_DISTANCE                   =         673.1 <km>                   
    MINIMUM_LATITUDE                 = -17.882 <degrees>                    
    CENTER_LATITUDE                  = -11.818 <degrees>                    
    MAXIMUM_LATITUDE                 =  -6.141 <degrees>                    
    WESTERNMOST_LONGITUDE            =  263.691 <degrees>                   
    CENTER_LONGITUDE                 =  254.711 <degrees>                   
    EASTERNMOST_LONGITUDE            =  245.728 <degrees>                   
    HORIZONTAL_PIXEL_SCALE           =   168.286 <m/pixel>                  
    VERTICAL_PIXEL_SCALE             =   168.286 <m/pixel>                  
    NORTH_AZIMUTH                    = 136.862 <degrees>                    
    ORBIT_NUMBER                     = "N/A"                                      
                                                                                  
    /* Data description parameters */                                             
    PROCESSING_LEVEL_ID = "3"                                                     
    DATA_QUALITY_ID = "1"                                                         
    DATA_QUALITY_DESC = "0:INCOMPLETE; 1:COMPLETE"                                
    TELEMETRY_SOURCE_ID = "EGSE"                                                  
    CHANNEL_ID = "IR"                                                             
    SOFTWARE_VERSION_ID = "VIR Calibration 2.0"                                   
                                                                                  
    /* Instrument status */                                                       
    INSTRUMENT_MODE_ID = "S_H_SPE_H_SPA_F"                                        
    INSTRUMENT_MODE_DESC =                                                        
     "S_H_SPE_H_SPA_F: Science, high spectral high spatial, Full slit             
      S_H_SPE_L_SPA_F: Science, high spectral low spatial, Full slit              
      S_H_SPE_L_SPA_F_SUM: Science, high spectral low spatial, Summing            
      S_L_SPE_H_SPA_F: Science, Low spectral high spatial, Full slit              
      S_L_SPE_L_SPA_F: Science, Low spectral low spatial, Full slit               
      S_L_SPE_L_SPA_F_SUM: Science, Low spectral low spatial, Summing             
      S_H_SPE_H_SPA_Q: Science, high spectral high spatial, Quarter slit          
      S_L_SPE_H_SPA_Q: Science, low spectral high spatial, Quarter slit           
      S_H_SPE_L_SPA_F_MEA: Science, high spectral low spatial, Meaning            
      S_L_SPE_L_SPA_F_MEA: Science, low spectral low spatial, Meaning             
      C_H_SPE_H_SPA_F: Calibration, high spectral high spatial, Full slit         
      C_H_SPE_L_SPA_F: Calibration, high spectral low spatial, Full slit          
      SPARE: CALIBRATION Spare                                                    
      C_L_SPE_H_SPA_F: Calibration, low spectral high spatial, Full slit          
      C_L_SPE_L_SPA_F: Calibration, low spectral low spatial, Full slit           
      C_H_SPE_H_SPA_Q: Calibration, high spectral high spatial, Quarter slit      
      C_L_SPE_H_SPA_Q: Calibration, low spectral high spatial, Quarter slit"      
    ENCODING_TYPE = "N/A"                                                         
    SCAN_MODE_ID = "4"                                                            
    DAWN:SCAN_PARAMETER = (-3.7, -3.7, 4500, 60)                                  
    SCAN_PARAMETER_DESC = ("SCAN_START_ANGLE", "SCAN_STOP_ANGLE",                 
     "SCAN_STEP_ANGLE","SCAN_STEP_NUMBER")                                        
    DAWN:SCAN_PARAMETER_UNIT = ("DEGREES", "DEGREES", "DEGREES", "DIMENSIONLESS") 
    FRAME_PARAMETER = (0.7, 1, 10, 59)                                            
    FRAME_PARAMETER_DESC = ("EXPOSURE_DURATION", "FRAME_SUMMING",                 
    "EXTERNAL_REPETITION_TIME", "DARK_ACQUISITION_RATE")                          
    DAWN:FRAME_PARAMETER_UNIT = ("S", "DIMENSIONLESS", "S", "DIMENSIONLESS")      
    DAWN:VIR_IR_START_X_POSITION=1                                                
    DAWN:VIR_IR_START_Y_POSITION=7                                                
    MAXIMUM_INSTRUMENT_TEMPERATURE = (80.5, 138.6, 138.6, 74.6)                   
    INSTRUMENT_TEMPERATURE_POINT = ("FOCAL_PLANE", "TELESCOPE", "SPECTROMETER",   
    "CRYOCOOLER")                                                                 
    DAWN:INSTRUMENT_TEMPERATURE_UNIT = ("K", "K", "K", "K")                       
    PHOTOMETRIC_CORRECTION_TYPE = "NONE"                                          
                                                                                  
    /* Pointers to first record of objects in file */                             
    ^HISTORY = 49                                                                 
    OBJECT = HISTORY                                                              
    END_OBJECT = HISTORY                                                          
    ^QUBE = "VIR_IR_1B_1_369819195_2.QUB"                                         
    NOTE = "ITF used for this file is DAWN_VIR_IR_RESP_V1.DAT"                    
                                                                                  
    /* Description of the object contained in the file */                         
    OBJECT = QUBE                                                                 
                                                                                  
    /*    Standard cube Keywords */                                               
     AXES = 3                                                                     
     AXIS_NAME = (BAND, SAMPLE, LINE)                                             
     CORE_ITEMS= (432, 256, 60)                                                   
     CORE_ITEM_BYTES = 4                                                          
     CORE_ITEM_TYPE = "IEEE_REAL"                                                 
     CORE_BASE = 0.0                                                              
     CORE_MULTIPLIER = 1.0                                                        
     CORE_VALID_MINIMUM = 0                                                       
     CORE_NULL = -32768                                                           
     CORE_LOW_REPR_SATURATION = -32767                                            
     CORE_LOW_INSTR_SATURATION = -32767                                           
     CORE_HIGH_REPR_SATURATION = -32767                                           
     CORE_HIGH_INSTR_SATURATION = -32767                                          
     CORE_NAME = "SPECTRAL RADIANCE"                                              
     CORE_UNIT = "W/(m**2*sr*micron)"                                             
                                                                                  
    /*  Suffix definition */                                                      
     SUFFIX_BYTES = 4                                                             
     SUFFIX_ITEMS = (    0,   0,    0)                                            
                                                                                  
    /* Spectral axis description */                                               
                                                                                  
        GROUP = BAND_BIN                                                          
                                                                                  
        BAND_BIN_CENTER =                                                         
    (1.021,1.030,1.040,1.049,1.059,1.068,1.078,1.087,1.096,1.106,1.115,1.125,     
    1.134,1.144,1.153,1.163,1.172,1.182,1.191,1.200,1.210,1.219,1.229,1.238,      
    1.248,1.257,1.267,1.276,1.286,1.295,1.305,1.314,1.323,1.333,1.342,1.352,      
    1.361,1.371,1.380,1.390,1.399,1.409,1.418,1.428,1.437,1.446,1.456,1.465,      
    1.475,1.484,1.494,1.503,1.513,1.522,1.532,1.541,1.550,1.560,1.569,1.579,      
    1.588,1.598,1.607,1.617,1.626,1.636,1.645,1.655,1.664,1.673,1.683,1.692,      
    1.702,1.711,1.721,1.730,1.740,1.749,1.759,1.768,1.777,1.787,1.796,1.806,      
    1.815,1.825,1.834,1.844,1.853,1.863,1.872,1.882,1.891,1.900,1.910,1.919,      
    1.929,1.938,1.948,1.957,1.967,1.976,1.986,1.995,2.005,2.014,2.023,2.033,      
    2.042,2.052,2.061,2.071,2.080,2.090,2.099,2.109,2.118,2.127,2.137,2.146,      
    2.156,2.165,2.175,2.184,2.194,2.203,2.213,2.222,2.232,2.241,2.250,2.260,      
    2.269,2.279,2.288,2.298,2.307,2.317,2.326,2.336,2.345,2.355,2.364,2.373,      
    2.383,2.392,2.402,2.411,2.421,2.430,2.440,2.449,2.459,2.468,2.477,2.487,      
    2.496,2.506,2.515,2.525,2.534,2.544,2.553,2.563,2.572,2.582,2.591,2.600,      
    2.610,2.619,2.629,2.638,2.648,2.657,2.667,2.676,2.686,2.695,2.705,2.714,      
    2.723,2.733,2.742,2.752,2.761,2.771,2.780,2.790,2.799,2.809,2.818,2.827,      
    2.837,2.846,2.856,2.865,2.875,2.884,2.894,2.903,2.913,2.922,2.932,2.941,      
    2.950,2.960,2.969,2.979,2.988,2.998,3.007,3.017,3.026,3.036,3.045,3.055,      
    3.064,3.073,3.083,3.092,3.102,3.111,3.121,3.130,3.140,3.149,3.159,3.168,      
    3.177,3.187,3.196,3.206,3.215,3.225,3.234,3.244,3.253,3.263,3.272,3.282,      
    3.291,3.300,3.310,3.319,3.329,3.338,3.348,3.357,3.367,3.376,3.386,3.395,      
    3.405,3.414,3.423,3.433,3.442,3.452,3.461,3.471,3.480,3.490,3.499,3.509,      
    3.518,3.527,3.537,3.546,3.556,3.565,3.575,3.584,3.594,3.603,3.613,3.622,      
    3.632,3.641,3.650,3.660,3.669,3.679,3.688,3.698,3.707,3.717,3.726,3.736,      
    3.745,3.754,3.764,3.773,3.783,3.792,3.802,3.811,3.821,3.830,3.840,3.849,      
    3.859,3.868,3.877,3.887,3.896,3.906,3.915,3.925,3.934,3.944,3.953,3.963,      
    3.972,3.982,3.991,4.000,4.010,4.019,4.029,4.038,4.048,4.057,4.067,4.076,      
    4.086,4.095,4.104,4.114,4.123,4.133,4.142,4.152,4.161,4.171,4.180,4.190,      
    4.199,4.209,4.218,4.227,4.237,4.246,4.256,4.265,4.275,4.284,4.294,4.303,      
    4.313,4.322,4.332,4.341,4.350,4.360,4.369,4.379,4.388,4.398,4.407,4.417,      
    4.426,4.436,4.445,4.454,4.464,4.473,4.483,4.492,4.502,4.511,4.521,4.530,      
    4.540,4.549,4.559,4.568,4.577,4.587,4.596,4.606,4.615,4.625,4.634,4.644,      
    4.653,4.663,4.672,4.682,4.691,4.700,4.710,4.719,4.729,4.738,4.748,4.757,      
    4.767,4.776,4.786,4.795,4.804,4.814,4.823,4.833,4.842,4.852,4.861,4.871,      
    4.880,4.890,4.899,4.909,4.918,4.927,4.937,4.946,4.956,4.965,4.975,4.984,      
    4.994,5.003,5.013,5.022,5.032,5.041,5.050,5.060,5.069,5.079,5.088,5.098)      
                                                                                  
          BAND_BIN_WIDTH  =                                                       
    (0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0140,0.0139,       
    0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139, 
    0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0139,0.0138,0.0138,0.0138, 
    0.0138,0.0138,0.0138,0.0138,0.0138,0.0138,0.0138,0.0137,0.0137,0.0137,0.0137, 
    0.0137,0.0137,0.0137,0.0137,0.0137,0.0136,0.0136,0.0136,0.0136,0.0136,0.0136, 
    0.0136,0.0135,0.0135,0.0135,0.0135,0.0135,0.0135,0.0135,0.0134,0.0134,0.0134, 
    0.0134,0.0134,0.0134,0.0134,0.0133,0.0133,0.0133,0.0133,0.0133,0.0133,0.0132, 
    0.0132,0.0132,0.0132,0.0132,0.0132,0.0131,0.0131,0.0131,0.0131,0.0131,0.0131, 
    0.0130,0.0130,0.0130,0.0130,0.0130,0.0129,0.0129,0.0129,0.0129,0.0129,0.0129, 
    0.0128,0.0128,0.0128,0.0128,0.0128,0.0128,0.0127,0.0127,0.0127,0.0127,0.0127, 
    0.0126,0.0126,0.0126,0.0126,0.0126,0.0126,0.0125,0.0125,0.0125,0.0125,0.0125, 
    0.0125,0.0124,0.0124,0.0124,0.0124,0.0124,0.0124,0.0123,0.0123,0.0123,0.0123, 
    0.0123,0.0123,0.0122,0.0122,0.0122,0.0122,0.0122,0.0122,0.0121,0.0121,0.0121, 
    0.0121,0.0121,0.0121,0.0121,0.0120,0.0120,0.0120,0.0120,0.0120,0.0120,0.0120, 
    0.0119,0.0119,0.0119,0.0119,0.0119,0.0119,0.0119,0.0118,0.0118,0.0118,0.0118, 
    0.0118,0.0118,0.0118,0.0118,0.0118,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117, 
    0.0117,0.0117,0.0117,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116, 
    0.0116,0.0116,0.0116,0.0116,0.0116,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115,0.0115, 
    0.0115,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116,0.0116, 
    0.0116,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0117,0.0118, 
    0.0118,0.0118,0.0118,0.0118,0.0118,0.0118,0.0119,0.0119,0.0119,0.0119,0.0119, 
    0.0119,0.0120,0.0120,0.0120,0.0120,0.0120,0.0121,0.0121,0.0121,0.0121,0.0121, 
    0.0122,0.0122,0.0122,0.0122,0.0122,0.0123,0.0123,0.0123,0.0123,0.0124,0.0124, 
    0.0124,0.0124,0.0125,0.0125,0.0125,0.0125,0.0126,0.0126,0.0126,0.0126,0.0127, 
    0.0127,0.0127,0.0128,0.0128,0.0128,0.0128,0.0129,0.0129,0.0129,0.0130,0.0130, 
    0.0130,0.0131,0.0131,0.0131,0.0132,0.0132,0.0132,0.0133,0.0133,0.0133,0.0134, 
    0.0134,0.0134,0.0135,0.0135,0.0135,0.0136,0.0136,0.0137,0.0137,0.0137,0.0138, 
    0.0138,0.0139,0.0139,0.0139,0.0140,0.0140,0.0141,0.0141,0.0141,0.0142,0.0142, 
    0.0143,0.0143,0.0144,0.0144,0.0144,0.0145,0.0145,0.0146,0.0146,0.0147,0.0147, 
    0.0148,0.0148,0.0148,0.0149,0.0149,0.0150,0.0150,0.0151,0.0151,0.0152,0.0152, 
    0.0153,0.0153,0.0154,0.0154,0.0155,0.0155,0.0156,0.0156,0.0157,0.0157,0.0158, 
    0.0158,0.0159,0.0159,0.0160,0.0160,0.0161,0.0162,0.0162,0.0163,0.0163,0.0164, 
    0.0164,0.0165,0.0165,0.0166,0.0167,0.0167,0.0168,0.0168,0.0169,0.0169,0.0170, 
    0.0171,0.0171,0.0172,0.0172,0.0173,0.0173,0.0174,0.0175,0.0175,0.0176,0.0176, 
    0.0177,0.0178,0.0178,0.0179,0.0180,0.0180,0.0181,0.0181,0.0182,0.0183,0.0183, 
    0.0184,0.0185,0.0185,0.0186)                                                  
                                                                                  
     BAND_BIN_UNIT = MICROMETER                                                   
                                                                                  
        BAND_BIN_ORIGINAL_BAND =                                                  
    (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,  
     29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,  
     54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,  
     79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,  
    103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,  
    122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,  
    141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,  
    160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,  
    179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,  
    198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,  
    217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,  
    236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,  
    255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,  
    274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,  
    293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,  
    312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,  
    331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,349,  
    350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,  
    369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,  
    388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,  
    407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,  
    426,427,428,429,430,431,432)                                                  
                                                                                  
    END_GROUP = BAND_BIN                                                          
                                                                                  
    END_OBJECT                     = QUBE                                         
    END                                                                           
                                                                                  
                                                                                  
    OBJECT = HISTORY                                                              
                                                                                  
                                    
                                 
                                                                                  
                                                                                  
    END_OBJECT = HISTORY                                                            

    This is the detached label of the "quality qube" VIR_VIS_1B_1_369819195_QQ_2.QUB, associated with the qube VIR_VIS_1B_1_369819195_2.QUB:

    PDS_VERSION_ID = PDS3                                                         
    LABEL_REVISION_NOTE = "MTC_11-10-2011"                                        
                                                                                  
    /* Dataset and Product Information */                                         
    DATA_SET_NAME = "DAWN VIR CAL (RDR) VESTA INFRARED SPECTRA V1.0"              
    DATA_SET_ID = "DAWN-A-VIR-3-RDR-IR-VESTA-SPECTRA-V1.0"                        
    PRODUCT_ID = "VIR_IR_1B_1_369819195_QQ"                                       
    PRODUCT_TYPE = RDR                                                            
    PRODUCER_FULL_NAME = "A. CORADINI"                                            
    PRODUCER_INSTITUTION_NAME = "ISTITUTO NAZIONALE DI ASTROFISICA"               
    PRODUCT_CREATION_TIME = 2014-02-04T10:28:31.476                               
    PRODUCT_VERSION_ID = "02"                                                     
                                                                                  
    /* File Information */                                                        
    RECORD_TYPE = FIXED_LENGTH                                                    
    RECORD_BYTES = 512                                                            
    FILE_RECORDS = 30                                                             
    LABEL_RECORDS = 29                                                            
                                                                                  
    /* Time Information */                                                        
    START_TIME = 2011-09-20T19:32:08.774                                          
    STOP_TIME = 2011-09-20T19:42:18.516                                           
    IMAGE_MID_TIME = 2011-09-20T19:37:13.645                                      
    SPACECRAFT_CLOCK_START_COUNT = "1/369819194.8588"                             
    SPACECRAFT_CLOCK_STOP_COUNT = "1/369819804.6010"                              
                                                                                  
    /* Mission description parameters */                                          
    INSTRUMENT_HOST_NAME = "DAWN"                                                 
    INSTRUMENT_HOST_ID = "DAWN"                                                   
    MISSION_PHASE_NAME = "VESTA TRANSFER TO HAMO (VTH)"                           
                                                                                  
    /* Instrument description parameters */                                       
    INSTRUMENT_NAME = "VISIBLE AND INFRARED SPECTROMETER"                         
    INSTRUMENT_ID = "VIR"                                                         
    INSTRUMENT_TYPE = "IMAGING SPECTROMETER"                                      
    DESCRIPTION = "Geometrical data use the Claudia Double-Prime                  
    coordinate system. For further information please refer to the coordinate     
    system document in the Document directory"                                    
                                                                                  
    /* Celestial Geometry                                       */                
    RIGHT_ASCENSION                  =  294.982 <degrees>                   
    DECLINATION                      =  -45.862 <degrees>                   
    TWIST_ANGLE                      =  212.773 <degrees>                   
    CELESTIAL_NORTH_CLOCK_ANGLE      =  327.227 <degrees>                   
    QUATERNION                       = (  0.18145,                                
                                         -0.06296,                                
                                         -0.92459,                                
                                          0.32901 )                               
    QUATERNION_DESC                  = "                                          
         Above parameters are calculated at the center time of the observation    
         which is 2011-09-20T19:37:13.645.  The quaternion has the form:          
         w, x, y, z (i.e. SPICE format)."                                         
                                                                                  
    /* Solar geometry                                           */                
    SPACECRAFT_SOLAR_DISTANCE        =   341460541.0 <km>                   
    SC_SUN_POSITION_VECTOR           = ( -282638804.9 <km>,                 
                                          162420911.9 <km>,                 
                                          101636875.2 <km> )                
                                                                                  
    SC_SUN_VELOCITY_VECTOR           = ( -12.248 <km/s>,                    
                                         -15.261 <km/s>,                    
                                          -4.342 <km/s> )                   
                                                                                  
    /* SPICE Kernels                                            */                
    SPICE_FILE_NAME                  = "DAWN_VTH_R02.TM"                          
                                                                                  
    TARGET_NAME                      = "4 VESTA"                                  
    TARGET_TYPE                      = "ASTEROID"                                 
                                                                                  
    /* COORDINATE SYSTEM                                        */                
    COORDINATE_SYSTEM_NAME           = "VESTA_FIXED"                              
    COORDINATE_SYSTEM_CENTER_NAME    = "4 VESTA"                                  
                                                                                  
    /* Geometry in "VESTA_FIXED" coordinates from SPICE         */                
    SUB_SPACECRAFT_LATITUDE          =  -4.168 <degrees>                    
    SUB_SPACECRAFT_LONGITUDE         =  254.994 <degrees>                   
    SUB_SPACECRAFT_AZIMUTH           = 139.951 <degrees>                    
    SPACECRAFT_ALTITUDE              =         667.1 <km>                   
    TARGET_CENTER_DISTANCE           =         947.3 <km>                   
    SC_TARGET_POSITION_VECTOR        = (         317.0 <km>,                
                                                -650.3 <km>,                
                                                -612.8 <km> )               
                                                                                  
    SC_TARGET_VELOCITY_VECTOR        = (   0.053 <km/s>,                    
                                          -0.073 <km/s>,                    
                                           0.101 <km/s> )                   
                                                                                  
    LOCAL_HOUR_ANGLE                 = 147.408 <degrees>                    
    SUB_SOLAR_LATITUDE               = -27.351 <degrees>                    
    SUB_SOLAR_LONGITUDE              =  287.585 <degrees>                   
    SUB_SOLAR_AZIMUTH                = 108.928 <degrees>                    
                                                                                  
    /* Illumination                                             */                
    INCIDENCE_ANGLE                  =  31.075 <degrees>                    
    EMISSION_ANGLE                   =  16.426 <degrees>                    
    PHASE_ANGLE                      =  40.769 <degrees>                    
                                                                                  
    /* Image parameters                                         */                
    SLANT_DISTANCE                   =         673.1 <km>                   
    MINIMUM_LATITUDE                 = -17.882 <degrees>                    
    CENTER_LATITUDE                  = -11.818 <degrees>                    
    MAXIMUM_LATITUDE                 =  -6.141 <degrees>                    
    WESTERNMOST_LONGITUDE            =  263.691 <degrees>                   
    CENTER_LONGITUDE                 =  254.711 <degrees>                   
    EASTERNMOST_LONGITUDE            =  245.728 <degrees>                   
    HORIZONTAL_PIXEL_SCALE           =   168.286 <m/pixel>                  
    VERTICAL_PIXEL_SCALE             =   168.286 <m/pixel>                  
    NORTH_AZIMUTH                    = 136.862 <degrees>                    
    ORBIT_NUMBER                     = "N/A"                                      
                                                                                  
    /* Data description parameters */                                             
    PROCESSING_LEVEL_ID = "3"                                                     
    DATA_QUALITY_ID = "1"                                                         
    DATA_QUALITY_DESC = "0:INCOMPLETE; 1:COMPLETE"                                
    TELEMETRY_SOURCE_ID = "EGSE"                                                  
    CHANNEL_ID = "IR"                                                             
    SOFTWARE_VERSION_ID = "VIR Calibration 2.0"                                   
                                                                                  
    /* Instrument status */                                                       
    INSTRUMENT_MODE_ID = "S_H_SPE_H_SPA_F"                                        
    INSTRUMENT_MODE_DESC =                                                        
     "S_H_SPE_H_SPA_F: Science, high spectral high spatial, Full slit             
      S_H_SPE_L_SPA_F: Science, high spectral low spatial, Full slit              
      S_H_SPE_L_SPA_F_SUM: Science, high spectral low spatial, Summing            
      S_L_SPE_H_SPA_F: Science, Low spectral high spatial, Full slit              
      S_L_SPE_L_SPA_F: Science, Low spectral low spatial, Full slit               
      S_L_SPE_L_SPA_F_SUM: Science, Low spectral low spatial, Summing             
      S_H_SPE_H_SPA_Q: Science, high spectral high spatial, Quarter slit          
      S_L_SPE_H_SPA_Q: Science, low spectral high spatial, Quarter slit           
      S_H_SPE_L_SPA_F_MEA: Science, high spectral low spatial, Meaning            
      S_L_SPE_L_SPA_F_MEA: Science, low spectral low spatial, Meaning             
      C_H_SPE_H_SPA_F: Calibration, high spectral high spatial, Full slit         
      C_H_SPE_L_SPA_F: Calibration, high spectral low spatial, Full slit          
      SPARE: CALIBRATION Spare                                                    
      C_L_SPE_H_SPA_F: Calibration, low spectral high spatial, Full slit          
      C_L_SPE_L_SPA_F: Calibration, low spectral low spatial, Full slit           
      C_H_SPE_H_SPA_Q: Calibration, high spectral high spatial, Quarter slit      
      C_L_SPE_H_SPA_Q: Calibration, low spectral high spatial, Quarter slit"      
    ENCODING_TYPE = "N/A"                                                         
    SCAN_MODE_ID = "4"                                                            
    DAWN:SCAN_PARAMETER = (-3.7, -3.7, 4500, 60)                                  
    SCAN_PARAMETER_DESC = ("SCAN_START_ANGLE", "SCAN_STOP_ANGLE",                 
     "SCAN_STEP_ANGLE","SCAN_STEP_NUMBER")                                        
    DAWN:SCAN_PARAMETER_UNIT = ("DEGREES", "DEGREES", "DEGREES", "DIMENSIONLESS") 
    FRAME_PARAMETER = (0.7, 1, 10, 59)                                            
    FRAME_PARAMETER_DESC = ("EXPOSURE_DURATION", "FRAME_SUMMING",                 
    "EXTERNAL_REPETITION_TIME", "DARK_ACQUISITION_RATE")                          
    DAWN:FRAME_PARAMETER_UNIT = ("S", "DIMENSIONLESS", "S", "DIMENSIONLESS")      
    DAWN:VIR_IR_START_X_POSITION=1                                                
    DAWN:VIR_IR_START_Y_POSITION=7                                                
    MAXIMUM_INSTRUMENT_TEMPERATURE = (80.5, 138.6, 138.6, 74.6)                   
    INSTRUMENT_TEMPERATURE_POINT = ("FOCAL_PLANE", "TELESCOPE", "SPECTROMETER",   
    "CRYOCOOLER")                                                                 
    DAWN:INSTRUMENT_TEMPERATURE_UNIT = ("K", "K", "K", "K")                       
    PHOTOMETRIC_CORRECTION_TYPE = "NONE"                                          
                                                                                  
    /* Pointers to first record of objects in file */                             
    ^HISTORY = 30                                                                 
    OBJECT = HISTORY                                                              
    END_OBJECT = HISTORY                                                          
    ^QUBE = "VIR_IR_1B_1_369819195_QQ_2.QUB"                                      
                                                                                  
    /* Quality Cube */                                                            
    OBJECT  = QUBE                                                                
     AXES                        = 3                                              
     AXIS_NAME                   = (BAND,SAMPLE,LINE)                             
     CORE_ITEMS                  = (432,256,3)                                    
     CORE_ITEM_BYTES             = 4                                              
     CORE_ITEM_TYPE              = "IEEE_REAL"                                    
     CORE_BASE                   = 0.0                                            
     CORE_MULTIPLIER             = 1.0                                            
     CORE_VALID_MINIMUM          = 0                                              
     CORE_NULL                   = -32768                                         
     CORE_LOW_REPR_SATURATION    = -32767                                         
     CORE_LOW_INSTR_SATURATION   = -32767                                         
     CORE_HIGH_REPR_SATURATION   = -32767                                         
     CORE_HIGH_INSTR_SATURATION  = -32767                                         
     CORE_NAME                   = ("WAVELENGTH","FWHM","FLAG")                   
     CORE_UNIT                   = ("MICRON","MICRON","DIMENSIONLESS")            
                                                                                  
     SUFFIX_BYTES                = 4                                              
     SUFFIX_ITEMS                = (0, 0, 0)                                      
    END_OBJECT  = QUBE                                                            
                                                                                  
    END                                                                           
                                                                                  
                                                                                  
                                                                                  
    OBJECT = HISTORY                                                              
                                                                                  
                                                                                  
                                                                                  
                                                                                  
                                                                                  
                                                                                  
                                                                                  
                                
    END_OBJECT = HISTORY                                                            

    The format of the detached PDS label for the housekeeping data associated with the RDR data is identical to of the EDR HK files. Please see the sample EDR HK label above for details.

    Index Table Label

    At following is an example detached for an INDEX table (INDEX.TAB).

    PDS_VERSION_ID                = PDS3                                          
    RECORD_TYPE                   = FIXED_LENGTH                                  
    RECORD_BYTES                  = 263                                           
    FILE_RECORDS                  = 4150                                          
    ^HEADER                       = ("INDEX.TAB", 1)                              
    ^INDEX_TABLE                  = ("INDEX.TAB", 2)                              
    INSTRUMENT_HOST_ID            = "DAWN"                                        
                                                                                  
    OBJECT                        = HEADER                                        
      HEADER_TYPE                 = "TEXT"                                        
      DESCRIPTION                 = "A header row containing a list of column     
                                     names."                                      
                                                                                  
      RECORDS                     = 1                                             
      BYTES                       = 263                                           
    END_OBJECT                    = HEADER                                        
                                                                                  
    OBJECT                        = INDEX_TABLE                                   
      INTERCHANGE_FORMAT          = ASCII                                         
      INDEX_TYPE                  = SINGLE                                        
      DESCRIPTION                 = "INDEX.TAB lists all the data files on        
                                     this volume. It starts on line two           
                                     because the first row has column headers"    
      ROW_BYTES                   = 263                                           
      ROWS                        = 4149                                          
      COLUMNS                     = 8                                             
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = DATA_SET_ID                                   
        DESCRIPTION               = "A unique alphanumeric identifier for a data  
                                     set."                                        
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 2                                             
        BYTES                     = 38                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = FILE_SPECIFICATION_NAME                       
        DESCRIPTION               = "The full path and file name relative to the  
                                     root level of the archive volume."           
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 43                                            
        BYTES                     = 82                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = PRODUCT_ID                                    
        DESCRIPTION               = "A permanent, unique identifier assigned to   
                                     a data product. The PRODUCT_ID must be unique
                                     within its data set."                        
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 128                                           
        BYTES                     = 23                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = VOLUME_ID                                     
        DESCRIPTION               = "A unique identifier for a data volume."      
        DATA_TYPE                 = CHARACTER                                     
        START_BYTE                = 154                                           
        BYTES                     = 11                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = PRODUCT_CREATION_TIME                         
        DESCRIPTION               = "The UTC system format time when a product    
                                     was created."                                
        DATA_TYPE                 = TIME                                          
        START_BYTE                = 167                                           
        BYTES                     = 23                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = START_TIME                                    
        DESCRIPTION               = "The date and time of the beginning of an     
                                     event or observation (whether it be a        
                                     spacecraft, ground-based, or system event) in
                                     UTC."                                        
        DATA_TYPE                 = TIME                                          
        START_BYTE                = 191                                           
        BYTES                     = 23                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = STOP_TIME                                     
        DESCRIPTION               = "The date and time of the end of an           
                                     observation or event (whether it be a        
                                     spacecraft, ground-based, or system event) in
                                     UTC."                                        
                                                                                  
        DATA_TYPE                 = TIME                                          
        START_BYTE                = 215                                           
        BYTES                     = 23                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
      OBJECT                      = COLUMN                                        
        NAME                      = IMAGE_MID_TIME                                
        DESCRIPTION               = "The time at which the exposure of the image  
                                     was half way through its duration."          
        DATA_TYPE                 = TIME                                          
        START_BYTE                = 239                                           
        BYTES                     = 23                                            
      END_OBJECT                  = COLUMN                                        
                                                                                  
    END_OBJECT                   = INDEX_TABLE                                      
    END

    Example Document Label

    The following is an example detached label for the Dawn Science Plan document.

    PDS_VERSION_ID          = PDS3                                                
    MISSION_NAME            = "DAWN MISSION TO VESTA AND CERES"                   
    INSTRUMENT_HOST_NAME    = "DAWN"                                              
    INSTRUMENT_NAME         = "FRAMING CAMERA 2"                                  
    INSTRUMENT_ID           = "FC2"                                               
    DATA_SET_ID             = {"DAWN-CAL-FC1-2-EDR-CALIB-IMAGES-V1.0",            
                               "DAWN-CAL-FC2-2-EDR-CALIB-IMAGES-V1.0",            
                               "DAWN-A-FC2-2-EDR-VESTA-IMAGES-V1.0",              
                               "DAWN-A-FC2-3-RDR-VESTA-IMAGES-V1.0",              
                               "DAWN-A-GRAND-2-EDR-VESTA-COUNTS-V1.0",            
                               "DAWN-A-GRAND-3-RDR-VESTA-COUNTS-V1.0",            
                               "DAWN-A-VIR-2-EDR-IR-VESTA-SPECTRA-V1.0",          
                               "DAWN-A-VIR-2-EDR-VIS-VESTA-SPECTRA-V1.0",         
                               "DAWN-A-VIR-3-RDR-IR-VESTA-SPECTRA-V1.0",          
                               "DAWN-A-VIR-3-RDR-VIS-VESTA-SPECTRA-V1.0",         
                               "DAWN-M-FC2-2-EDR-MARS-IMAGES-V1.0",               
                               "DAWN-M-FC2-3-RDR-MARS-IMAGES-V1.0",               
                               "DAWN-M-GRAND-2-EDR-MARS-COUNTS-V1.0",             
                               "DAWN-M-GRAND-3-RDR-MARS-COUNTS-V1.0",             
                               "DAWN-X-FC1-2-EDR-CRUISE-IMAGES-V1.0",             
                               "DAWN-X-FC1-3-RDR-CRUISE-IMAGES-V1.0",             
                               "DAWN-X-FC2-2-EDR-CRUISE-IMAGES-V1.0",             
                               "DAWN-X-FC2-3-RDR-CRUISE-IMAGES-V1.0",             
                               "DAWN-X-GRAND-2-EDR-CRUISE-COUNTS-V1.0",           
                               "DAWN-X-VIR-2-EDR-IR-CRUISE-SPECTRA-V1.0",         
                               "DAWN-X-VIR-2-EDR-VIS-CRUISE-SPECTRA-V1.0",        
                               "DAWN-X-VIR-3-RDR-IR-CRUISE-SPECTRA-V1.0",         
                               "DAWN-X-VIR-3-RDR-VIS-CRUISE-SPECTRA-V1.0"}        
    PRODUCT_ID              = "DAWN_SCIENCE_PLAN"                                 
    PRODUCT_TYPE            = "DOCUMENT"                                          
    RECORD_TYPE             = STREAM                                              
    DESCRIPTION             = "                                                   
          This document describes the plans for acquiring Dawn science data on the
          way to, and in orbit about, the two protoplanets 4 Vesta and 1 Ceres,   
          that will be visited by the Dawn spacecraft. It represents the high     
          level plan for Dawn mission science operations. An update to the        
          Science Plan is developed prior to arrival at each body. This version   
          contains an as-flown update for all mission phases through the Vesta    
          orbital phase."                                                         
                                                                                  
    ^PDF_DOCUMENT           = "DAWN_SCIPLAN_V4_4.PDF"                             
    ^HTML_DOCUMENT          = "DAWN_SCIPLAN_V4_4.HTM"                             
    ^JPEG_DOCUMENT          = {                                                   
                               "DAWN_SCIPLAN_V4_4_FIG2_1A.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG2_1B.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_10.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_11.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_12.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_13.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_14.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_15.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_16.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_17.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_18.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_19.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_1A.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_1B.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_20.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_21.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_22.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_23.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_24.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_25.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_26.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_27.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_28.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_29.JPG",                   
                               "DAWN_SCIPLAN_V4_4_FIG4_3.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG4_4.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG4_5.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG4_6.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG4_7.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG4_8.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG4_9.JPG",                    
                               "DAWN_SCIPLAN_V4_4_FIG6A.JPG",                     
                               "DAWN_SCIPLAN_V4_4_FIG6B.JPG"}                     
                                                                                  
    OBJECT                  = PDF_DOCUMENT                                        
      DOCUMENT_NAME         = "DAWN SCIENCE PLAN"                                 
      DOCUMENT_TOPIC_TYPE   = "MISSION SCIENCE"                                   
      PUBLICATION_DATE      = 2013-03-26                                          
      INTERCHANGE_FORMAT    = BINARY                                              
      DOCUMENT_FORMAT       = "ADOBE PDF"                                         
      FILES                 = 1                                                   
      ENCODING_TYPE         = "PDF-ADOBE-1.5"                                     
      DESCRIPTION           = "                                                   
        PDF version of the Dawn Science Plan document."                           
    END_OBJECT              = PDF_DOCUMENT                                        
                                                                                  
    OBJECT                  = HTML_DOCUMENT                                       
      DOCUMENT_NAME         = "DAWN SCIENCE PLAN"                                 
      DOCUMENT_TOPIC_TYPE   = "MISSION SCIENCE"                                   
      PUBLICATION_DATE      = 2013-03-26                                          
      INTERCHANGE_FORMAT    = ASCII                                               
      DOCUMENT_FORMAT       = "HTML"                                              
      FILES                 = 1                                                   
      DESCRIPTION           = "                                                   
        This document is an HTML version of the Dawn Science Plan document. This  
        version has been generated with minimal HTML markup to enhance its        
        readability in a text viewer."                                            
    END_OBJECT              = HTML_DOCUMENT                                       
                                                                                  
    OBJECT                  = JPEG_DOCUMENT                                       
      DOCUMENT_NAME         = "DAWN SCIENCE PLAN"                                 
      DOCUMENT_TOPIC_TYPE   = "MISSION SCIENCE"                                   
      PUBLICATION_DATE      = 2013-03-26                                          
      INTERCHANGE_FORMAT    = BINARY                                              
      DOCUMENT_FORMAT       = "JPG"                                               
      FILES                 = 33                                                  
      ENCODING_TYPE         = "JPEG"                                              
      DESCRIPTION           = "                                                   
        These are JPEG images of equations and figures appearing the the Dawn     
        Science Plan document, and which are referenced by the HTML version of    
        that document."                                                           
    END_OBJECT              = JPEG_DOCUMENT                                       
                                                                                  
    END                                                                           
                                                                                    

    Appendix B. Support staff and cognizant personnel

    Here follows a list of the support staff and cognizant personnel associated with the archive generation and validation.

       ==================================================================================================
       Name                  Role                  e-mail address
       ==================================================================================================
       Maria Teresa Capria   VIR Data archiving    mariateresa.capria@iaps.inaf.it
                             responsible
       Eleonora Ammannito                          eleonora.ammannito@iaps.inaf.it
       Marco Giardino        VIR Data archiving    marco.giardino@iaps.inaf.it
       Gianrico Filacchione  Calibration process   gianrico.filacchione@iaps.inaf.it
       Sergio Fonte                                sergio.fonte@iaps.inaf.it
       Raffaella Noschese    EGSE                  raffaella.noschese@iaps.inaf.it
       Federico Tosi         Geometries            federico.tosi@iaps.inaf.it
       ===================================================================================================
                                                                                    

    Appendix C. Software that can be used to work with the data

    Visualization of the VIR qubes

    VIR qubes, both EDR and RDR, have a very simple format and can be visualized without difficulty with many codes. They are ISIS3_compliant. The VIR team is releasing the QubeReader, a Java code that can be downloaded from the website:

    http://galactica.ifsi-roma.inaf.it/solarsystem/downloadsPage/VIRReader/virReader.php

    On the same website usage information is available.

    Tutorials on using ISIS and ENVI to open the VIR .QUB files are available in the DOCUMENT directory of each of the VIR archive volumes.