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| Citation |
L. R. Nittler,
MESSENGER H XRS 5 REDUCED DATA RECORD FOOTPRINTS V1.0,
NASA Planetary Data System, 2017. |
| Digital Object Identifier (DOI) |
Unable to retrieve DOI information. Please contact the PDS Help Desk for assistance.
|
| Data Set Abstract |
Abstract
========
This data set consists of the MESSENGER XRS reduced data record
(RDR) footprints which are derived from the navigational
meta-data for each calibrated data record (CDR) whose FOV_STATUS
is 1 or 3; that is, when the field of view intersects the planet
and is either partially or entirely sunlit. Each XRS
observation results in four X-ray spectra. When an X-ray
interacts with one of the four detectors, a charge or voltage
pulse is generated. This signal is converted into one of 2^8
(256) channels, which are correlated to energy. Over a commanded
integration time period a histogram of counts as a function of
energy (channel number) is recorded. The EDRs are the number of
events in each channel of the four detectors accumulated over the
integration period. Channels above or below the useful energy
range of the detectors are not transmitted. The result is three
244-channel GPC histograms and one 231-channel solar monitor
histogram, each of which is designated as a single X-ray spectrum.
Each observation is calibrated and processed into the CDR data
set. For each CDR whose field of view is contained or partially
contained on the planetary surface, a footprint is computed
that corresponds to the perimeter of the planetary region within
the instrument field of view during the integration time of the
observation. |
| Search/Access Data |
Geosciences Web Services
Mercury Orbital Data Explorer
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| Additional Information |
| Mission Information |
MESSENGER
|
| Data Set Information |
MESS-H-XRS-5-RDR-FOOTPRINTS-V1.0 |
| Instrument Host Information |
MESS
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| Instrument Information |
XRS
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| Target Information |
MERCURY
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