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2001 Mars Odyssey: GRS
SGS
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The gamma sensor part of the GRS instrument suite
stopped returning data on September 7, 2009. There are
no gamma EDR, CGS, or SGS products since that event. See the
ERRATA.TXT file for details.
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GRS Summed Gamma Spectra (SGS) products are organized as a single
virtual volume. Each data file represents one 5-degree latitude band and has 72
records, each record containing gamma spectra summed over a 5-degree bin of
longitude within the band of latitude. Thirty-six data files that represent the
36 5-degree latitude bands on the planet are grouped together in one
subdirectory. The data in one subdirectory were acquired during a time interval
of 15 degrees of solar longitude (Ls). The subdirectories are in turn grouped
into directories by mission year.
Use the links below for direct HTTP access
to any part of the GRS SGS archive. Alternatively, to
search the archive for data that meet particular
criteria, e.g. time and location, use the
Mars Orbital
Data Explorer (ODE).
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AAREADME.TXT |
Introduction to the archive |
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ERRATA.TXT |
Notes and errata for this release |
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YR04 directory |
Data products acquired during Odyssey mapping year 4
(Ls 0 - 285, 12/10/07 - 6/15/09) |
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YR03 directory |
Data products acquired during Odyssey mapping year 3
(Ls 0 - 360, 1/22/06 - 12/10/07) |
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YR02 directory |
Data products acquired during Odyssey mapping year 2
(Ls 0 - 360, 3/6/04 - 1/22/06) |
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YR01 directory |
Data products acquired during Odyssey mapping year 1
(Ls 0 - 360, 4/19/02 - 3/6/04) |
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INDEX directory |
Index of all products in the archive |
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DOCUMENT directory |
Documentation for the archive |
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CATALOG directory |
Information about the archive in the PDS Catalog |
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LABEL directory |
Format files referenced by the PDS labels. These format files describe
the column layout of the data files. |
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SOFTWARE directory |
Java source code library for parsing GRS data files |
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Root directory |
Top-level directory of the virtual volume |
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