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The MESSENGER XRS EDR data consist of x-ray spectra and
instrument data collected by the XRS instrument during cruise,
fly-by and orbital operations at Mercury, along with observations
of Venus, and observations taken of Cassiopeia-A for calibration.
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Citation |
R. D. Starr (GSFC), XRS UNCALIBRATED (EDR) DATA E/V/H V1.0, NASA
Planetary Data System, 2007 |
Digital Object Identifier (DOI) |
Unable to retrieve DOI information. Please contact the PDS Help Desk for assistance.
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Data Set Abstract |
Abstract ======== This data set consists of the MESSENGER XRS
uncalibrated observations, also known as EDRs. 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. In addition to the science data, associated instrument
parameters are included. |
Search/Access Data |
Geosciences Web Services
Mercury Orbital Data Explorer
Geosciences Online Archives
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Additional Information |
Mission Information |
MESSENGER
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Data Set Information |
MESS-E/V/H-XRS-2-EDR-RAWDATA-V1.0 |
Instrument Host Information |
MESS
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Instrument Information |
XRS
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Target Information |
CALIBRATION
EARTH
MERCURY
VENUS
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