Data Set Information
|
DATA_SET_NAME |
NEAR GRS SPECTRA FOR EROS SURFACE PHASE
|
DATA_SET_ID |
NEAR-A-GRS-2-EDR-EROS/SURFACE-V1.0
|
NSSDC_DATA_SET_ID |
NULL
|
DATA_SET_TERSE_DESCRIPTION |
Level 1b NEAR Gamma Ray Spectrometer observations taken during
the Eros surface phase of the mission.
|
DATA_SET_DESCRIPTION |
Data Set Overview
=================
This data set contains Gamma Ray Spectrometer (GRS) observations
made during the Eros surface phase of the NEAR mission. Only the
GRF sensor made observations from the surface of Eros.
Parameters
==========
The data are presented as FITS binary tables (using the BINTAB
extension) with detached PDS labels. The parameters listed in
each table vary with observing sensor. The detailed descriptions
of the various parameters included in the table are given in a
separate documentation file, one for each sensor:
GRBDEFINITIONS.TXT
GRFDEFINITIONS.TXT
GRSDEFINITIONS.TXT
Data
====
The data are in the form of FITS files with attached FITS headers
and detached PDS labels. The data subdirectory has subdirectories
for each instrument sensor. Files contain all data for one day.
Ancillary Data
==============
Geometry data (pointing and attitude information) are provided
for the entire NEAR mission as a separate data set.
Media/Format
============
This data set is released as a CDROM set.
Processing History
==================
The processing history includes no background, noise, geometry or
other corrections.
|
DATA_SET_RELEASE_DATE |
2002-07-04T00:00:00.000Z
|
START_TIME |
2001-02-19T04:59:24.022Z
|
STOP_TIME |
2001-02-28T04:53:35.744Z
|
MISSION_NAME |
NEAR EARTH ASTEROID RENDEZVOUS
|
MISSION_START_DATE |
1996-02-17T12:00:00.000Z
|
MISSION_STOP_DATE |
2001-02-28T12:00:00.000Z
|
TARGET_NAME |
EROS
|
TARGET_TYPE |
ASTEROID
|
INSTRUMENT_HOST_ID |
NEAR
|
INSTRUMENT_NAME |
GAMMA RAY SPECTROMETER
|
INSTRUMENT_ID |
GRS
|
INSTRUMENT_TYPE |
SPECTROMETER
|
NODE_NAME |
Small Bodies
|
ARCHIVE_STATUS |
ARCHIVED
|
CONFIDENCE_LEVEL_NOTE |
Data Quality Flag
=================
Each observation includes a quality flag in the column named 'DQI'.
This flag was extracted from the FITS keyword NEAR-008 of the
original data label. The fields of this keyword are defined
below. Data quality defects flag is raised when there is missing
data other fields informational and not quality related. The eight
characters of this field are described below.
Definition - Data Quality Index
c0 = Data Quality Flag (0=good,1=flagged for quality
defects)
c1 = Instrument number for FC, CTP and AIU (1 or 2)
c2 - c6 = Processing Flags not quality related
c7 = CCDS Source (0=VC0, 1=VC1, 2=VC2, 3=VC3)
Review
======
This data set underwent external peer review within PDS in June,
2000.
|
CITATION_DESCRIPTION |
Unknown
|
ABSTRACT_TEXT |
This data set contains Gamma Ray Spectrometer (GRS) observations
made during the Eros surface phase of the NEAR mission. Only the
GRF sensor made observations from the surface of Eros.
|
PRODUCER_FULL_NAME |
DOUGLAS B. HOLLAND
|
SEARCH/ACCESS DATA |
SBN PSI WEBSITE
|