PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM ^TEXT = "AAREADME.TXT" OBJECT = TEXT PUBLICATION_DATE = 2017-07-20 NOTE = "AAREADME.TXT describes this volume." END_OBJECT = TEXT END Volume DWNVVIR_I1A Dawn VIR IR Raw Level-1A (EDR) Vesta Encounter Archive ============================================================================== Brief Volume Description ============================================================================== This is version 2 of the Dawn VIR IR raw level-1A (EDR) volume (DWNVVIR_I1A). It contains version 2 of the DAWN VIR RAW (EDR) VESTA INFRARED SPECTRA (DAWN-A-VIR-2-EDR-IR-VESTA-SPECTRA-V2.0) data set. Changes in version 2 of this data set include: 1) Saturated data have been replaced with the CORE_HIGH_INSTR_SATURATION value. 2) The contaminated region in HAMO has been filled using the CORE_NULL value. The data cover all of the Dawn Vesta encounter phases (Approach, Survey, transfer to HAMO, HAMO, LAMO, HAMO-2, and transfer to Ceres). Note that Version 2.0 of the data set consists of version 3 data products (PRODUCT_VERSION_ID = 03; file names = *_3.*). The version 2 data products were not included in the PDS archive. NOTE: Reading the Science Plan (located in the /DOCUMENT/SCIENCE_PLAN directory) is critical to the understanding of the Vesta observations and science objectives. Other critical documentation in the DOCUMENT directory include the volume SIS and calibration procedure. These data have been decompressed, decoded, and formatted into scientifically useful data structures from the original raw telemetry packets. These products, along with their required PDS documentation, form the level-1a data sets (EDRs). All data files are stored in the 'DATA' branch of the directory tree. The data are organized into subdirectories by phase and activity. DATA subdirectories are named according to the convention: yyyymmdd_nnnnn where: yyyymmdd = phase/activity start date nnnnn = phase/activity name A brief overview of the mission phases and activities (including the start times and names used in the DATA subdirectories is provided in the 'Dawn Science Observations' table below. The data on this volume include both raw data QUBEs and housekeeping data tables. The data QUBEs are named according to the convention: VIR_sss_ll_v_sctime_z, where: 'VIR' = literal sss = sensor ('IR' or 'VIS') ll = processing level ('1A' or '1B') v = clock reset number sctime = the integral portion of the SC_CLK_START_COUNT z = data file version The file extension for the data QUBEs is '.QUB'. The housekeeping data are stored in ASCII tables ('.TAB' file extension). File naming for the housekeeping files is: VIR_sss_ll_v_sctime_HK_z where the 'HK' is literal and the other elements are identical to those in the QUBE files. Both the data QUBE and HK files are accompanied by a PDS label file ('.LBL' file extension), which provides information on the temporal, geometrical, and instrumental conditions under which the data were taken. SPICE kernels are archived by the NAIF Node of the PDS. This volume contains a collection of SPICE metakernel (TM) files in the GEOMETRY directory. These TMs contain a list SPICE kernels that were used in processing the VIR data products, and are referenced in the data product labels. A more detailed description of volume contents and organization is provided in the Dawn VIR Software Interface Specification (SIS) located on this volume at: /DOCUMENT/SIS/ Both PDF-A and HTML (with figures supplied as separate image files) are available. Users of these data are encouraged to acknowledge both the PDS and the principal investigators of the instruments whose data are used in analysis in all publications. ============================================================================== Volume Set Information ============================================================================== This volume is part of the VIR raw level-1A EDR data volume set. This volume set includes the following volumes: Volume ID Description -------------------------------------------------------- DWNXVIR_I1A Dawn VIR-IR L1-A EDR cruise data DWNXVIR_V1A Dawn VIR-VIS L1-A EDR cruise data DWNVVIR_I1A Dawn VIR-IR L1-A EDR Vesta data DWNVVIR_V1A Dawn VIR-VIS L1-A EDR Vesta data DWNCAVIR_I1A Dawn VIR-IR L1-A EDR Ceres Approach data DWNCAVIR_V1A Dawn VIR-VIS L1-A EDR Ceres Approach data DWNCSVIR_I1A Dawn VIR-IR L1-A EDR Ceres Survey data DWNCSVIR_V1A Dawn VIR-VIS L1-A EDR Ceres Survey data DWNCHVIR_I1A Dawn VIR-IR L1-A EDR Ceres HAMO data DWNCHVIR_V1A Dawn VIR-VIS L1-A EDR Ceres HAMO data DWNCLVIR_I1A Dawn VIR-IR L1-A EDR Ceres LAMO data DWNCLVIR_V1A Dawn VIR-VIS L1-A EDR Ceres LAMO data ============================================================================== Mission Facts ============================================================================== The 'Dawn Vesta Science Observations' table below provides a list of observations made by the Dawn VIR instrument. It includes the observation start date, the ID of the phase in which it occurred, the activity name, and a brief description. ------------------------------------------------------------------------------ Dawn Science Observations ------------------------------------------------------------------------------ Start Mission Activity Activity Date Phase Name Description ============================================================================== 11-05-03 VSA APPROACH Vesta Science Approach Phase ------------------------------------------------------------------------------ 11-05-10 VSA OPNAV_002 Ride-along cubes to FC OpNav images 11-06-08 VSA OPNAV_006 Ride-along cubes to FC OpNav images 11-06-14 VSA OPNAV_007 Ride-along cubes to FC OpNav images 11-06-30 VSA RC1 Ride-along cubes to FC rotational characterization movie #1 11-07-23 VSA OPNAV_019 Ride-along cubes to FC OpNav images 11-08-06 VSA C0Mosaic Ride-along cubes to FC mosaics images (equatorial and south) ------------------------------------------------------------------------------ 11-08-11 VSS SURVEY Vesta Science Survey Phase (range ~3000 km) ------------------------------------------------------------------------------ 11-08-11 VSS CYCLE1 Survey Cycle (orbit) 1 11-08-12 VSS CYCLE1 C1 Pushbroom observation 11-08-14 VSS CYCLE2 Survey Cycle (orbit) 2 11-08-14 VSS CYCLE2 C2 24 VIR VIS+IR cubes at 12 stations (North) 11-08-15 VSS CYCLE2 C2 24 VIR VIS+IR cubes at 12 stations (South) 11-08-17 VSS CYCLE3 Survey Cycle (orbit) 3 11-08-17 VSS CYCLE3 C3 Pushbroom observation 11-08-20 VSS CYCLE4 Survey Cycle (orbit) 4 11-08-20 VSS CYCLE4 C4 20 VIR VIS+IR cubes at 10 stations (North) 11-08-21 VSS CYCLE4 C4 20 VIR VIS+IR cubes at 10 stations (South) 11-08-23 VSS CYCLE5 Survey Cycle (orbit) 5 11-08-23 VSS CYCLE5 C5 24 VIR VIS+IR cubes at 12 stations (North) 11-08-24 VSS CYCLE5 C5 24 VIR VIS+IR cubes at 12 stations (South) 11-08-24 VSS CYCLE6 Survey Cycle (orbit) 6 11-08-25 VSS CYCLE6 C6 24 VIR VIS+IR cubes at 12 stations (Equator) 11-08-25 VSS CYCLE6 C6 24 VIR VIS+IR cubes at 12 stations (South) 11-08-28 VSS CYCLE7 Survey Cycle (orbit) 7 11-08-29 VSS CYCLE7 C7 16 VIR VIS+IR cubes at 8 stations (North) 11-08-29 VSS CYCLE7 C7 Pushbroom observation ------------------------------------------------------------------------------ 11-09-03 VTH TRANSFER_ Vesta Transfer to HAMO Phase TO_HAMO ------------------------------------------------------------------------------ 11-09-17 VTH OPNAV_003 Ride-along cubes to FC OpNav images 11-09-20 VTH BOUNUS_SCIENCE Bonus Science cubes 11-09-25 VTH FC1_CHECKOUT Ride-along cubes to FC1 checkout images ------------------------------------------------------------------------------ 11-09-29 VSH HAMO Vesta Science HAMO Phase (average range ~950 km) ------------------------------------------------------------------------------ 11-09-29 VSH CYCLE1 10 orbits of ride-along pushbroom to FC nadir imaging 11-10-06 VSH CYCLE2 9 orbits of ride-along pushbroom to FC off-nadir imaging 11-10-11 VSH CYCLE3 10 orbits of ride-along cubes and pushbroom to FC off-nadir imaging 11-10-16 VSH CYCLE4 10 orbits of ride-along cubes and pushbroom to FC off-nadir imaging 11-10-21 VSH CYCLE5 10 orbits of ride-along cubes and pushbroom to FC off-nadir imaging 11-10-26 VSH CYCLE6 10 orbits of ride-along pushbroom to FC nadir imaging ------------------------------------------------------------------------------ 11-11-02 VTL TRANSFER_ Vesta Transfer to LAMO Phase TO_LAMO ------------------------------------------------------------------------------ No VIR observations ------------------------------------------------------------------------------ 11-12-12 VSL LAMO Vesta Science LAMO Phase (average range ~465 km) ------------------------------------------------------------------------------ 11-12-13 VSL CYCLE1 VIR powered off 11-12-17 VSL CYCLE2 VIR powered off 11-12-24 VSL CYCLE3 VIR powered off 11-12-31 VSL CYCLE4 VIR powered off 12-01-07 VSL CYCLE5 7 orbits (2 VIS+IR 5 VIS-only) VIR full-slit pushbroom cubes 12-01-14 VSL CYCLE6 S/C safing - no FC or VIR data acquired 12-01-21 VSL CYCLE7 7 orbits (2 VIS+IR 5 VIS-only) VIR full-slit pushbroom cubes 12-01-28 VSL CYCLE8 7 orbits (2 VIS+IR 5 VIS-only) VIR full-slit pushbroom cubes 12-02-04 VSL CYCLE9 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-02-11 VSL CYCLE10 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-02-18 VSL CYCLE11 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-02-25 VSL CYCLE12 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-03-03 VSL CYCLE13 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-03-10 VSL CYCLE14 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-03-17 VSL CYCLE15 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-03-24 VSL CYCLE16 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-03-31 VSL CYCLE17 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-04-07 VSL CYCLE18 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-04-14 VSL CYCLE19 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-04-21 VSL CYCLE20 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes 12-04-28 VSL CYCLE21 4 orbits (2 full slit 2 quarter slit) VIR VIS-IR pushbroom cubes ------------------------------------------------------------------------------ 12-05-01 VT2 TRANSFER_ Vesta Transfer to HAMO-2 Phase TO_HAMO_2 ------------------------------------------------------------------------------ No VIR observations ------------------------------------------------------------------------------ 12-06-15 VH2 HAMO_2 Vesta Science HAMO Phase (average range ~950 km) ------------------------------------------------------------------------------ 12-06-15 VH2 C0_OFFNADIR1 C0 10 orbits of VIR VIS+IR pushbroom cubes in the northern hemisphere and the south pole 12-06-20 VH2 C0_OFFNADIR2 C0 7 orbits of VIR VIS+IR pushbroom cubes in the northern hemisphere 12-06-24 VH2 CYCLE1 10 orbits of VIR VIS+IR pushbroom cubes in the southern hemisphere 12-06-29 VH2 CYCLE2 10 orbits of VIR VIS+IR pushbroom cubes in the southern hemisphere 12-07-04 VH2 CYCLE3 10 orbits of VIR VIS+IR pushbroom cubes in the equatorial region 12-07-09 VH2 CYCLE4 10 orbits of VIR VIS+IR pushbroom and scan-mirror cubes in the northern hemisphere 12-07-14 VH2 CYCLE5 10 orbits of VIR VIS+IR pushbroom cubes in the equatorial region 12-07-20 VH2 CYCLE6 10 orbits of VIR VIS+IR pushbroom cubes in the northern hemisphere ------------------------------------------------------------------------------ 12-07-25 VTC TRANSFER_ Vesta Transfer to Ceres Phase TO_CERES ------------------------------------------------------------------------------ 12-08-25 VTC RC4 Ride-along cubes to FC rotational characterization movie #4 ============================================================================== File Formats ============================================================================== The data cube files on this volume are binary. The housekeeping (HK) data files are ASCII tables. Both the binary cubes and ASCII HK data have detached PDS labels. The PDS label is an ASCII file containing information describing spacecraft, target, and observation parameters characterizing the associated data file. A data set description, instrument description, and other PDS documents are in .CAT files in the /CATALOG directory. In more recent versions of the Microsoft Windows operating system the .CAT by default is reserved as 'Security Catalog.' The .CAT files contained in this volume are ASCII text files, and can be read by any form of text editor. To make Windows open files with this name extension as text files right click the .CAT file, select with and choose a text editor to open the file. Additional documentation is located in the DOCUMENT directory. ============================================================================== Errata ============================================================================== Every effort has been made to assure that the data and documentation are of the best possible quality. However, mistakes are inevitable. There is a file called ERRATA.TXT found at the root level of this volume which contains a list of known deficiencies or caveats associated with data on this volume at the time this volume was produced. ============================================================================== Volume Contents and Structure ============================================================================== This section describes the volume structure and naming conventions. Below is a tree diagram of the volume, followed by a description of the directory function and key files in each directory. DWNVVIR_I1A (root directory) | |- AAREADME.TXT Describes volume contents, and organization (this file) | |- ERRATA.TXT Describes known deficiencies or caveats in the data on | this volume. | |- VOLDESC.CAT High level description of volume contents. | |- [CATALOG] PDS catalog files containing information describing the | data, instrument, instrument personnel, relevant references, | the spacecraft, and mission. | |- [DATA] Contains the data. The DATA directory is subdivided into | separate subdirectories by mission phase, and observation | period. | |- [DOCUMENT] Contains documents important to the understanding and use | of the data on this archive volume. | |- [EXTRAS] Contains files which are not an official part of the | archive, and which may not conform with PDS standards, | but which may be of use to data users. | |- [GEOMETRY] Contains VIR SPICE metakernel (TM) files, listing the SPICE | kernels used in generating the data and data label files. | |- [INDEX] Contains a list of all data products on this volume and a a list of geometric parameters associated with each product. ============================================================================ Contacts ============================================================================ This volume was produced for the Planetary Data System (PDS) at the Small Bodies node. The images, and associated metadata were supplied by Dr. Angioletta Coradini at the Istituto Nazionale Di Astrofisica (INAF). The volume was assembled at the Dawn Science Center (DSC), by Joseph N. Mafi. For questions or problems regarding the volume, please contact Dr. Carol Neese at the PDS Small Bodies Node: Email neese@psi.edu Telephone 520-622-6300 Mail Carol Neese Planetary Science Institute 1700 E. Ft. Lowell, Ste. 106 Tuscon, AZ 85719-2395 USA For question regarding the data, please contact Dr. Maria Cristina De Sanctis at INAF: Internet mariacristina.desanctis@iaps.inaf.it Telephone +39 06 499344448 Mail Area di Ricerca di Tor Vergata via del Fosso del Cavaliere, 100 00133 Rome Italy For questions regarding PDS Standards or other archives available from the PDS, please contact PDS Operator at the PDS Engineering Node (at JPL): Email pds_operator@jpl.nasa.gov Telephone 818-354-4321 Mail Planetary Data System, PDS Operator Jet Propulsion Laboratory Mail Stop 202-101 4800 Oak Grove Dr. Pasadena, CA 91109-8099 USA The PDS assumes no legal liability for errors on this disk. All users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data. Please report errors on this disk to the Small Bodies Node of the PDS through the ERRATA reporting procedures described above.