urn:nasa:pds:mgs-mager:data-omni-flux-premap:97262 1.0 1.22.0.0 Product_Observational 2024 MGS ER This file contains Mars Global Surveyor (MGS) calibrated, omnidirectional Electron Reflectometer (ER) electron flux data in 19 different energy channels ranging from 10 eV to 20 keV, collected during the Pre-Mapping Mission Phase. These data cover 1997-09-19T00:00:39.535Z to 1997-09-20T00:00:31.535Z. David Mitchell 0000-0001-9154-7236 1 University of California, Berkeley https://ror.org/01an7q238 2024-07-26 1.0 This product, 97262.STS, was originally released as part of the PDS3 MGS-M-ER-3-PREMAP/OMNIDIR-FLUX-V1.0 data set. The metadata have been migrated to PDS4. The data themselves are unchanged. 1997-09-19T00:00:39.535Z 1997-09-20T00:00:31.535Z Science Calibrated MGS ER Omnidirectional Electron Flux Pre-Mapping Data Heliosphere Magnetosphere Particles Electrons Plasma Mars Global Surveyor Mission urn:nasa:pds:context:investigation:mission.mars_global_surveyor data_to_investigation Mars Global Surveyor Host urn:nasa:pds:context:instrument_host:spacecraft.mgs is_instrument_host Electron Reflectometer Instrument urn:nasa:pds:context:instrument:mgs.er is_instrument Mars Planet urn:nasa:pds:context:target:planet.mars data_to_target Orbit Insertion 10 20 Electrons Flux MGS-M-ER-3-PREMAP/OMNIDIR-FLUX-V1.0:97262.STS:97262.STS data_to_calibrated_source_product 10.17189/1519749 PDS Planetary Plasma Interactions Node This is the first version converted to PDS4. The DOI references the source PDS3 data set. 97262.STS 2001-03-02T12:38:37 2451370 5a294419d02a418b042980bf1ae4e154

GSFC ODL Header 0 5569 PDS DSV 1 The first 162 records of this file is the header section. These records are not fixed length but the sum of the header bytes is 5569. The ASCII text preceding the tabular data is a KEYWORD = VALUE type header with carriage return line feed (CRLF) 'line' terminators. The header includes information about the data file in a form that is native to the instrument team and does not use PDS nomenclature.

MGS ER Cal Omnidirectional Flux Pre-Mapping Data 1997-09-19 5569 10497 These data are provided at the full instrument downlink sampling frequency which varies by orbit (spacecraft telemetry mode). Each data point is a measure of the electron flux 1/(cm**2*s*sr*eV) averaged over a 360 x 14 degree disk-shaped field of view (FOV). During the Science Phasing Orbits (SPO), the spacecraft was in Array Normal Spin (ANS) configuration, for which the ER field of view sweeps out the entire sky (4-pi ster) every 50 minutes, which is much longer than the integration time per record (2 to 48 sec, depending on energy and telemetry rate) and much longer than most timescales of interest in Mars' plasma environment. Carriage-Return Line-Feed 1 1 233 Sample_UTC 1 1 ASCII_String 22 Universal time of the sample at the spacecraft (UTC, spacecraft event time). The time appears as 6 integer columns (year, day of year, hour, minute, second, millisecond). Individual elements of the time column are separated by a single ASCII space character and have leading zeros omitted. The individual elements can be read by using the FORTRAN format '(1X,I4,1X,I3,3(1X,I2),1X,I3)' IYR IDOY IHR IMIN ISEC IMSEC 19 1 0 23 209 Omnidirectional Electron Flux from Channels 0-18 1 1 ASCII_Real 11 %11.3e 1/(cm**2*s*sr*eV) The energy channels and sampling intervals are as follows: Channel Number Energy Range Central Energy Samples per Packet --------------------------------------------------------------- 0 13 - 20 keV 16127 eV 1 1 8.0 - 12 keV 9868 eV 1 2 4.9 - 7.5 keV 6035 eV 1 3 2.9 - 4.6 keV 3689 eV 3 4 1.8 - 2.8 keV 2255 eV 3 5 1.1 - 1.7 keV 1380 eV 3 6 680 - 1046 eV 844 eV 6 7 415 - 639 eV 515 eV 6 8 253 - 390 eV 314 eV 6 9 153 - 237 eV 191 eV 6 10 92 - 144 eV 116 eV 6 11 72 - 87 eV 79 eV 2 12 56 - 67 eV 61 eV 2 13 43 - 52 eV 47 eV 1 14 33 - 40 eV 36 eV 2 15 25 - 30 eV 27 eV 1 16 18 - 23 eV 21 eV 2 17 14 - 17 eV 15 eV 1 18 10 - 13 eV 11 eV 2 -9.999e-09