January 23, 2019
Approved:
----------------------------------------------
Maria Cristina De Sanctis Date
Experiment Team Lead
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Steven P. Joy Date
Dawn Science Center Manager
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Christopher T. Russell Date
Dawn Principal Investigator
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Michael F. A'Hearn Date
PDS Lead Node (SBN) Manager
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 .....................................
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.
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
===========================================================================
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
===========================================================================
Table 3. TBD Items
===========================================================================
TBD Items
---------------------------------------------------------------------------
Item Section Pages
===========================================================================
===========================================================================
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 ===========================================================================
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.
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.
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.
This specification applies to all archive volumes containing VIR data products for the duration of its mission.
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.
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
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.
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).
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:
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:
The Proximity Electronics consists of the following items:
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:
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
===========================================================================
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:
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.
For each mission phase, 4 data sets will be delivered: raw visible, raw infrared, calibrated visible and calibrated infrared, all arranged as "qubes".
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
=================================================================================================
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.
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.
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
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.
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)
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].
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.
Each VIR data set will be archived on a separate PDS volume. The volume naming convention is:
where:
For example, the Vesta VIS EDR volume will be named DWNVVIR_V1A and the Ceres Approach/RC3 IR RDR volume will be DWNCAVIR_I1B.
The VIR team will be making the following checks on the data, before submitting them to the DSC:
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.
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.
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.
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.
=================================================================================
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
===========================================================================
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)
=================================================================================
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).
===================================================================================
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
=================================================================================
The DATA directory contains the data products (labeled data files) produced by the VIR team.
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:
where:
The extension is always QUB. For example, visible channel raw data acquisitions starting at SC_CLOCK_START_COUNT = 21983325.39258 are named:
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.
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:
where:
Examples:
if the mission timeline remains as it is today.
Every file in the DATA path of a VIR archive volume is described by an external (detached) PDS label.
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:
where:
For example the file DAWN_VSH_R03.TM is version 3 of the Vesta Science HAMO (VSH) metakernel.
To the moment, there are no planned BROWSE products.
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
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 =====================================================================================
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:
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
==============================================================================
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.
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
===========================================================================================
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.
===========================================================================================
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
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.
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
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
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
===================================================================================================
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.