This volume contains TES-TSDR Standard Products from observations acquired by the Thermal Emission Spectrometer (TES) on Mars Global Surveyor (MGS). The TES instrument uses a Michelson interferometer to make infrared spectrometric measurements, and two sets of broad-band bolometric detectors to cover the thermal and visible bolometric bands. The instrument has a rotating pointing mirror that allows it to take measurements from the nadir position up to and past the limb in both the fore and aft directions. Additionally, the pointing mirror can be positioned to take measurements of space, and of the internal reference surfaces and lamps contained within the body of the TES instrument.
TES-TSDR Standard Products contain raw and calibrated thermal IR radiance spectra, visual and thermal bolometric radiance measurements, and atmospheric and surface properties derived from this data. Also included are the parameters that describe each observation, some down-linked diagnostic information, and pointing and positional information derived from the project's SPICE kernels.
TES-TSDR Standard Products are time sequential data records (TSDR). Derived data products, including gridded data sets, will be generated and archived on separate volumes. The data products on this volume may be reprocessed and republished at the end of the Mapping Phase of the mission.
Data products archived on this volume are copies of files released by the TES team. Errors and anomalies in the original data and comments about the archive are noted in the ERRATA.TXT file on this volume. Supporting documentation and labels conform to the Planetary Data System (PDS) Standards, Version 3.2, Jet Propulsion Laboratory (JPL) document JPL D-7669 Part 2 (7/24/1995) and the Planetary Science Data Dictionary, JPL document JPL D-7116, Rev D (7/15/1996).
TES data files contain binary data in a complex storage format. For the user's convenience, software is included on this volume that will read the binary data and output columns of ASCII values. The software can also select records from the data that match the user's criteria. The software is provided in versions for several UNIX and PC platforms.
The attached PDS labels for TES data files include the fields START_ORBIT_NUMBER and STOP_ORBIT_NUMBER. These fields refer to the beginning and ending orbits during which the data were acquired, using the TES Team orbit numbering system, also known as the Orbit Counter Keeper (ock). During the Orbit Insertion Phase, TES ock numbers and MGS Project orbit numbers were identical, except that the Project counted orbits from one periapsis to the next, while TES considered an orbit to begin at the spacecraft maneuver preceding periapsis, usually a difference of no more than twenty minutes. However, the MGS Project reset its orbit count to 1 at the beginning of the Mapping Phase. TES ock numbers were not reset, in order to preserve a unique orbit identifier. For TES data products acquired during mapping, the MGS Project mapping orbit number can be determined by subtracting 1683 from the TES ock number. During mapping, both TES and the MGS Project consider the beginning of an orbit to occur at the descending equator crossing.
This volume has been formatted so that Sun and PC users may access the data. Specifically, the volume has been formatted according to the ISO-9660 level 1 Interchange Standard. For further information, refer to the ISO-9660 Standard Document: RF# ISO 9660-1988, April 15, 1988.
This volume does not contain any Extended Attribute Records (XAR). Thus, some VAX/VMS users may have problems accessing files on this volume.
All text and detached PDS label files are stream format files, with a carriage return (ASCII 13) and a line feed character (ASCII 10) at the end of the record. This allows the files to be read by MS-DOS/Windows, Unix, and VMS operating systems.
All fixed length data field files in the TES-TSDR Standard Product Archive Volumes are binary files with PDS labels [Planetary Science Data Dictionary, 1996; PDS Standards Reference, 1995]. These labels are embedded at the beginning of the data files. For examples of PDS labels for each type of data product, see the TES-TSDR Standard Data Product SIS [TES-TSDR SIS, 1998].
A PDS label, whether embedded or detached from its associated file, provides descriptive information about the associated file. The PDS label is an object-oriented structure consisting of sets of 'keyword = value' declarations; the object to which the label refers is denoted by a statement of the form:
^object = location
in which the carat character (^, also called a pointer in this context) indicates where to find the object. In an embedded label, the location is an integer representing the starting record number of the object (the first record in the file is record 1). In a detached label, the location denotes the name of the file containing the object, along with the starting record or byte number, if there is more than one object in the file. For example:
^HEADER = ("F01.IMG",1) ^IMAGE = ("F01.IMG",1025
indicates that the IMAGE object begins at byte 1025 of the file F01.IMG, in the same directory as the detached label file. Below is a list of the possible formats for the ^object definition.
^object = n ^object = n
^object = "filename.ext" ^object = ("filename.ext",n) ^object = ("[dirlist]filename.ext",n) ^object = ("filename.ext",n ) ^object = ("[dirlist]filename.ext",n )
where n is the starting record or byte number of the object, counting
from the beginning of the file (record 1, byte 1),
Files on this volume are organized into a series of subdirectories below the top-level directory. The following table shows the structure and content of these directories. See the xxxxINFO.TXT files in each directory for specific information on the files in the directory.
Top-level directory | - AAREADME.HTM | - AAREADME.LBL | - AAREADME.TXT | - ERRATA.TXT | - VOLDESC.CAT | - CATALOG | | - CATINFO.TXT | | - DATASET.CAT | | - DEITGT.CAT | | - INST.CAT | | - INSTHOST.CAT | | - MARTGT.CAT | | - MISSION.CAT | | - PERSON.CAT | | - PHOTGT.CAT | | - REF.CAT | | - DATA | | - DATAINFO.TXT | | - ENB.TXT | | - GEOMETRY.TXT | | - WAVNUMDS.LBL | | - WAVNUMDS.TAB | | - WAVNUMSS.LBL | | - WAVNUMSS.TAB | | - MARS | | - BOL.FMT | | - BOLxxxxx.TAB | | - CMP.FMT | | - CMPxxxxx.TAB | | - CMPxxxxx.VAR | | - DATASET.LST | | - GEO.FMT | | - GEOxxxxx.TAB | | - IFG.FMT | | - IFGxxxxx.TAB | | - IFGxxxxx.VAR | | - LMB.FMT | | - LMBxxxxx.TAB | | - OBS.FMT | | - OBSxxxxx.TAB | | - POS.FMT | | - POSxxxxx.TAB | | - RAD.FMT | | - RADxxxxx.TAB | | - RADxxxxx.VAR | | - SRF.FMT | | - SRFxxxxx.TAB | | - SRFxxxxx.VAR | | - TLM.FMT | | - TLMxxxxx.TAB | | - VAR.LBL | | - DOCUMENT | | - ARCHSIS.ASC | | - ARCHSIS.LBL | | - ARCHSIS.PDF | | - DOCINFO.TXT | | - PROCESS.ASC | | - PROCESS.LBL | | - PROCESS.PDF | | - SDPSIS.ASC | | - SDPSIS.LBL | | - SDPSIS.PDF | | - INDEX | | - CLASS.TXT | | - CUMINDEX.LBL | | - CUMINDEX.TAB | | - DETMASK.TXT | | - INDEX.LBL | | - INDEX.TAB | | - INDXINFO.TXT | | - QUALITY.TXT | | - SPECMASK.TXT | | - SPECMASK.TAB | | - SOFTWARE | - SOFTINFO.TXT | - BIN | | - BININFO.TXT | | - HPPA2.EXE | | - INDIGO2.EXE | | - LINUX.EXE | | - RS6K.EXE | | - SOLSPARC.EXE | | - WINTEL.EXE | | - DOC | | - DOCINFO.TXT | | - USERDOC.TXT | | - SRC | - BUFFS.C | - CONVERT.C | - DATASET.C | - DIR.C | - DOS.H | - FAKE.C | - FAKE.H | - FF_IRTM.C | - FF_IRTM.H | - FF_T20.C | - FIELDS.C | - GENDEF.H | - HEADER.C | - HEADER.H | - IO_LABLIB3.C | - IO_LABLIB3.H | - MAKEFILE | - MEM.C | - MEM.H | - OUTPUT.C | - OUTPUT.H | - PROTO.H | - SEARCH.C | - SELECT.C | - SRCINFO.TXT | - SYSTEM.C | - SYSTEM.H | - TOOLBOX.H | - TOOLS.C | - TOOLS.H | - VANILLA.C | - VERSION.H
TES-TSDR data were provided by Philip R. Christensen, TES Principal Investigator, with assistance from Noel Gorelick, Greg Mehall, and Kelly Bender, Arizona State University.
Edward A. Guinness, Susan H. Slavney, and Raymond E. Arvidson, Planetary Data System Geosciences Node, Washington University, St. Louis, Missouri, assisted in design of this archive volume.