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2001 Mars Odyssey: GRS Special Products

Jan. 20, 2026. GRS Special Products have been migrated to PDS4.

The Odyssey GRS Science Team released a set of special derived products to accompany the October 1, 2002, release of EDRs (raw data). These products include global maps of neutron flux and portions of gamma-ray spectra showing hydrogen peaks. Figures in Science articles published in 2002 by the GRS Team were based on these data.

Data files (*.tab) are tables with fixed-length fields separated by commas. Each data file is accompanied by a PDS4 label (*.xml) that describes the format of the data file. (Legacy PDS3 labels (*.lbl) from the original version of this dataset are also present.) Both the data and the labels are ASCII text files.

GRS Special Products Bundle Root

Product Description Data Files Journal Articles
(links go to Science Magazine web site)
Gamma sensor hydrogen peaks Portions of Odyssey gamma-ray spectra showing emission line due to capture of thermal neutrons by hydrogen grs_h_peaks_020917.tab (27 KB)
grs_h_peaks_020917.xml
grs_h_peaks_020917.lbl
Gamma Science Article
(Science, Vol. 297, Issue 5578, 81-85, July 5, 2002)
NS epithermal neutron flux Map of epithermal neutron flux measured by the Neutron Spectrometer over the first 25.7 days of mapping ns_epithermal_020917.tab (6582 KB)
ns_epithermal_020917.xml
ns_epithermal_020917.lbl
NS Science Article
(Science, Vol. 297, Issue 5578, 75-78, July 5, 2002)
NS thermal neutron flux Map of thermal neutron flux measured by the Neutron Spectrometer over the first 25.7 days of mapping ns_thermal_020917.tab (6582 KB)
ns_thermal_020917.xml
ns_thermal_020917.lbl
NS fast neutron flux Map of fast neutron flux measured by the Neutron Spectrometer over the first 25.7 days of mapping ns_fast_020917.tab (6582 KB)
ns_fast_020917.xml
ns_fast_020917.lbl
HEND epithermal neutron flux Map of epithermal neutron flux measured by HEND with energies at 0.4 eV to 100 keV for the first 55 days of mapping hend_epithermal_020917.tab (198 KB)
hend_epithermal_020917.xml
hend_epithermal_020917.lbl
HEND Science Article
(Science, Vol. 297, Issue 5578, 78-81, July 5, 2002)
HEND fast neutron flux Map of fast neutron flux measured by HEND with energies at 3.4 to 7.3 MeV for the first 55 days of mapping hend_fast_020917.tab (178 KB)
hend_fast_020917.xml
hend_fast_020917.lbl

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