The data are divided up into four separate data sets. For each data set, there is an accompanying data set description file, which provides details on the structure and processing history of the data, and any other information you may need to know to use the data. The data set description files are located in plain ASCII form in the CATALOG directory, and in HTML form in the DOCUMENT directory of this CD. Please read these files before attempting to use the data. The data sets and the names of their respective data set description files are shown below:
|This data set contains the raw and calibrated ASI/MET data collected during the EDL phase of the mission. These data were collected by accelerometers, temperature sensors, a pressure sensor, and a wind sensor.||EDLER_DS.HTM|
|This data set contains temperature, pressure, and density profiles derived from the data in the first data set.||EDLDDRDS.HTM|
|This data set contains the raw MET data collected during the Surface phase of the mission. These data were acquired by temperature sensors, a pressure sensor, and a wind sensor.||SRFEDRDS.HTM|
|This data set contains the calibrated versions of the data in the third data set.||SRFRDRDS.HTM|
The data products on this CD are the original products released by the Mars Pathfinder project. They have been converted from BINARY to ASCII, and the calibrated data have been converted from raw voltage counts to engineering units such as temperature, pressure, and acceleration. Each data file has a detached PDS label that describes the file structure and instrument parameters used for the data. Derivation of the temperature, pressure, and density profiles is described in the EDLDDRDS.CAT file. Supporting documentation and label files conform to the Planetary Data System (PDS) Standards, Version 3.2, Jet Propulsion Laboratory (JPL) document number D-7669.
This CD-ROM does not contain any Extended Attribute Records (XARs). Thus, VAX/VMS users on older platforms may have some problems accessing files on the volume.
Note that some problems have been discovered in reading some CDs on UNIX platforms running the Solaris 2.6 operating system. This problem was solved on our systems by adding the following lines to the /etc/system file and rebooting:
* Next entries are to enable reading PDS CD-ROMs with "Record" entries set hsfs:ide_prohibited = 0xe6 set hsfs:hde_prohibited = 0xe6You might also try installing patch 105486-04 to correct this problem. It is a replacement HSFS driver and among the bugs fixed are:
4141713 system crashes when reading from ISO9660 Joliet cdrom 4101516 allow reading of non-standard ISO-9660 (unsorted dirs) by default 4101513 fail to find certain filenames on Rock Ridge CDs 4079732 problem reading ISO-9660 CDs where directory entries are not orderedIf you continue to have problems, please contact the PDS Operator. (Contact info is provided below in section 7.)
Tabular files are formatted so that they may be read directly into many database management systems (DBMS) or spreadsheet programs on various computers. In general, all fields in tables are fixed width and are separated by commas, with character fields enclosed in double quotation marks ("). Character fields are left justified, and numeric fields are right justified. The "start byte" and "bytes" values listed in a PDS label do not include the commas between fields or the quotation marks surrounding character fields. The records are of fixed length, and the last two bytes of each record contain the ASCII carriage return and line feed characters. This allows a table to be treated as a fixed length record file on computers that support this file type and as a normal text file on other computers.
The tables containing the raw and calibrated MET/Surface data were constructed slightly differently in an attempt to keep the format as similar as possible to that required for pre-existing software programs. The main difference is that the fields in these data files are not comma separated. However, the positions of the fields are fixed as in a normal PDS table, and the positions are described by the PDS labels. The files also contain a single header record which differs in format from the data records. The header records are padded with spaces to be the same length as the data records, so that the tables have a FIXED_LENGTH record format. All of the values in these tables are numeric.
PDS labels are object-oriented. The object to which the label refers (e.g., IMAGE, TABLE, etc.) is denoted by a statement of the form:
in which the carat character ('^', also called a pointer in this context) indicates that the object starts at the given location. For an object in the same file as the label, the location is an integer representing the starting record number of the object (the first record in the file is record 1). For an object located outside the label file, the location denotes the name of the file containing the object, along with the starting record or byte number. For example:
^object = location
indicates that the DATA_TABLE object begins at record 2 of the file SE0678S.TAB, in the same directory as the detached label file. Below is a list of the possible formats that use the ^object keyword.
^DATA_TABLE = ("SE0678S.TAB",2)
^object = n
^object = n <BYTES>
^object = "filename.ext"
^object = ("filename.ext",n)
^object = ("filename.ext",n <BYTES>)
||starting record or byte number of the object, counting from beginning of the file (record 1, byte 1); default is record number.|
||indicates that number given is in units of bytes.|
||upper-case file name.|
||upper-case file extension.|
All detached label and document files (with the exception of PDF formatted files) are stream format files, with a carriage return (ASCII 13) and a line feed character (ASCII 10) at the end of each record. This allows the files to be read by the MacOS, DOS, UNIX, and VMS operating systems. The PDF documentation files are in the binary Adobe Portable Document Format. These files can be read with the Adobe Acrobat Reader, available from "http://www.adobe.com/". (If this URL has expired, contact the PDS Operator for more information. Contact information for the PDS is shown in section 7.)
Some earlier versions of NASAView may not be able to display tables. Versions 1.2.b and later have been tested and are able to display these data.
It is the intention of PDS to distribute NASAView through its World Wide Web and FTP sites. Consult the PDS WWW site for the status of NASAView in terms of its capabilities and availability. The address for the PDS NASAView web site is:
(Complete contact information for the PDS is available below in section 7.)
FILE CONTENTS Top-level directory | |- AAREADME.TXT The file you are now reading. |- AAREADME.HTM HTML version of the AAREADME.TXT file. |- AAREADME.LBL PDS label describing the AAREADME.HTM file. |- ERRATA.TXT Description of anomalies present on the | preliminary version of this CD-ROM. |- VOLDESC.CAT Description of the contents of this CD-ROM | volume in machine readable format. | |- [CATALOG] The CATALOG directory contains information about the | | Mars Pathfinder mission, spacecraft, instruments, | | data, personnel, and references. The files are in | | plain ASCII text, formatted as PDS catalog objects | | for inclusion in the PDS data set catalog. Most of | | these files are also included in the DOCUMENT | | directory as HTML formatted files, which some users | | may find easier to read. | | | |- CATINFO.TXT Detailed description of the files in the CATALOG | | directory. | |- ASMTINST.CAT Description of the ASI/MET instrument. | |- EDLDDRDS.CAT ASI/MET EDL derived profile data set description. | |- EDLER_DS.CAT ASI/MET EDL raw and calibrated data set description. | |- INSTHOST.CAT Mars Pathfinder Lander description. | |- MISSION.CAT Mars Pathfinder mission description. | |- PERSON.CAT Mars Pathfinder ASI/MET personnel. | |- REF.CAT Mars Pathfinder-related references. | |- SRFEDRDS.CAT MET Surface EDR data set description. | |- SRFRDRDS.CAT MET Surface RDR data set description. | |- WINDINST.CAT IMP Windsock instrument description. | |- [DOCUMENT] The DOCUMENT directory contains documentation | | crucial to the understanding of the data on this | | CD, as well as ancillary information which may be | | of additional interest. Some of the documentation | | duplicates files found in the CATALOG directory, but | | which is here re-formatted as HTML for ease of use. | | | |- DOCINFO.TXT Detailed description of the files in the DOCUMENT | | directory. | |- ACCDTCAL.* ASI/MET Accelerometer Data Conversion Expressions. | |- ACCHKCAL.* ASI/MET Accelerometer Housekeeping Conversions. | |- AIP_CONV.* Aeroshell Instrumentation Package Data | | Conversion Expressions. | |- ASMTINST.* ASI/MET instrument description. | |- CONTACTS.* Contact information for MPF project personnel. | |- EDLDDRDS.* ASI/MET EDL derived profile data set description. | |- EDLER_DS.* ASI/MET EDL raw and calibrated data set description. | |- EDLNOMSQ.* ASI/MET EDL Nominal Sequences. | |- EDLSOFT(1,2).* EDL data calibration code. | |- EDLTELEM.* EDL Packet Telemetry Format description. | |- INSTHOST.* Mars Pathfinder Lander description. | |- KEYWORDS.* Definitions of keywords used in ASI/MET labels and tables. | |- METDEFS.* MET Experiment Command and Telemetry Definitions. | |- METSOFT.* MET data calibration code. | |- MISSION.* Mars Pathfinder mission description. | |- REF.* Mars Pathfinder-related References. | |- SRFEDRDS.* MET Surface EDR data set description. | |- SRFRDRDS.* MET Surface RDR data set description. | |- WINDINS*.* IMP Windsock instrument description. | |- [IMAGES] Directory containing images used in documents. | |- [INDEX] The INDEX directory contains volume index tables | | and other tables containing ancillary information. | | The volume index tables provide the location and | | file name of every data file on the CD. Some of | | them also provide additional parameters used to | | further describe the data. | | | |- INDXINFO.TXT Detailed description of the files in the INDEX directory. | |- ED_INDEX.LBL PDS label for ED_INDEX.TAB. | |- ED_INDEX.TAB Volume index table for the EDL derived data. | |- EERINDEX.LBL PDS label for EERINDEX.TAB. | |- EERINDEX.TAB Volume index table for the EDL raw and calibrated data. | |- PKT_HDRS.LBL PDS label for PKT_HDRS.TAB. | |- PKT_HDRS.TAB Table of raw packet headers for MET Surface EDRs. | |- SE_INDEX.LBL PDS label for SE_INDEX.TAB. | |- SE_INDEX.TAB Volume index table for the Surface raw data. | |- SES_TIME.LBL PDS label for SES_TIME.TAB. | |- SES_TIME.TAB Table of MET Surface data acquisition session | | numbers and their corresponding spacecraft clock | | and local time start and stop values. | |- SR_INDEX.LBL PDS label for SR_INDEX.TAB. | |- SR_INDEX.TAB Volume index table for the Surface calibrated data. | |- [EDL_DDR] The EDL_DDR directory contains pressure, density, | and temperature profiles derived from the ASI/MET | data collected during the EDL phase of the mission. | |- [EDL_ERDR] The EDL_ERDR directory contains raw and calibrated | ASI/MET data collected during the EDL phase of the | mission. | |- [SURF_EDR] The SURF_EDR directory contains raw MET data | | collected during the SURFACE phase of the mission. | | | |- [HKPDATA] This directory contains the raw housekeeping data. | | | | | |- [SE00XXH] This directory contains data from MET sessions | | | | 0000 through 0099. | | | | | | | |- SE0039H.LBL File containing PDS label describing SE0039H.TAB. | | | |- SE0039H.TAB File containing session 39 raw housekeeping data. | | | . . | | | . . | | | . . | | |- [SE14XXH] This directory contains data from MET sessions | | 1400 through 1499. | | | |- [SCIDATA] This directory contains raw science data. | | | | | |- [SE00XXS] This directory contains data from MET sessions | | | | 0000 through 0099. | | | | | | | |- SE0039S.LBL File containing PDS label describing SE0039S.TAB. | | | |- SE0039S.TAB File containing session 39 raw science data. | | | . . | | | . . | | | . . | | |- [SE14XXS] This directory contains data from MET sessions | | 1400 through 1499. | | |- [SURF_RDR] The SURF_RDR directory contains calibrated MET data | | collected during the SURFACE phase of the mission. | | | |- [HKPDATA] This directory contains the calibrated | | | housekeeping data. | | | | | |- [SR00XXH] This directory contains data from MET sessions | | | | 0000 through 0099. | | | | | | | |- SR0039H.LBL File containing PDS label describing SR0039H.TAB. | | | |- SR0039H.TAB File containing session 39 reduced housekeeping data. | | | . . | | | . . | | | . . | | |- [SR14XXH] This directory contains data from MET sessions | | 1400 through 1499. | | | |- [SCIDATA] This directory contains calibrated science data. | | | | | |- [SR00XXS] This directory contains data from MET sessions | | | | 0000 through 0099. | | | | | | | |- SR0039S.LBL File containing PDS label describing SR0039S.TAB. | | | |- SR0039S.TAB File containing session 39 reduced science data. | | | . . | | | . . | | | . . | | |- [SR14XXS] This directory contains data from MET sessions | | 1400 through 1499. |File naming conventions for the various data files are described in the respective data set descriptions, contained in the CATALOG and DOCUMENT directories:
EDL raw and calibrated data EDLER_DS.CAT or EDLER_DS.HTM EDL derived data EDLDDRDS.CAT or EDLDDRDS.HTM Surface raw data SRFEDRDS.CAT or SRFEDRDS.HTM Surface calibrated data SRFRDRDS.CAT or SRFRDRDS.HTM
PDS Planetary Atmospheres NodeFor general information related to the PDS, contact:
Reta F. Beebe
New Mexico State University
Department of Astronomy
P.O. Box 30001/Dept. 4500
Las Cruces, NM 88003
WWW Site: http://atmos.nmsu.edu/
Planetary Data System, PDS Operator
Jet Propulsion Laboratory
4800 Oak Grove Drive
Pasadena, CA 91109-8099
WWW Site: http://pds.jpl.nasa.gov/
This volume set was designed and produced at the Jet Propulsion Laboratory, Pasadena, California by Elizabeth Duxbury. The following people provided assistance in various capacities:
PDS Standards, Keywords, etc:
Betty Sword, Steve Hughes, Ron Joyner, and Jean Mortellaro (PDS-CN JPL), Lyle Huber and Jim Murphy (PDS-ATMOS, New Mexico State University), and Joe Mafi (PDS-PPI UCLA, Los Angeles, California).
Data Preparation and Documentation:
Doug Alexander, Sue LaVoie, Allan Runkle, and Pamela Woncik (Multimission Image Processing Laboratory, JPL), Donald Meyer and Tim Schofield (JPL), Jim Murphy (NASA Ames and New Mexico State University), Dr. Jim Schaeffer (NASA Ames/Sterling Software, Inc.), Elizabeth Conkling (NASA Ames/Foothill Junior College), Julio Magalhaes (NASA Ames), Rob Sullivan (Arizona State University and Cornell University), and Boris Semenov (PDS-NAIF, JPL).
MPF Project Support:
Kathleen Spellman, Susan Merrill, and Susan Roberts (JPL)
Thanks to Lyle Huber and Jim Murphy (PDS-ATMOS, New Mexico State University), Julio Magalhães (NASA Ames), Tim Schofield (JPL), Rob Sullivan (Cornell University, Ithaca, NY), Betty Sword (PDS-CN, JPL), and John Wilson (Princeton University, NJ) for reviewing this CD.