NASA - National Aeronautics and Space Administration

Data Set Information

DATA_SET_NAME CASSINI JUPITER UVIS SOLAR STELLAR BRIGHTNESS TIME SERIES 1.2
DATA_SET_ID CO-J-UVIS-2-SSB-V1.2
DATA_SET_TERSE_DESCRIPTION A set of time series of photometer data.
DATASET_DESCRIPTION A set of time series of photometer data.
DATA_SET_RELEASE_DATE null
RESOURCE_LINK atmos.nmsu.edu:8443/pds/Browse
DATA_OBJECT_TYPE TIME SERIES
START_TIME 1999-007T00:00:00
STOP_TIME null
MISSION_NAME CASSINI-HUYGENS
MISSION_START_DATE 1997-10-15
MISSION_STOP_DATE null
TARGET_NAME S RINGS
ATLAS
CALYPSO
DIONE
ENCELADUS
EPIMETHEUS
HELENE
HYPERION
IAPETUS
JANUS
MIMAS
PAN
PANDORA
PHOEBE
PROMETHEUS
RHEA
TELESTO
TETHYS
DARK SKY
STAR
ALBIORIX
TITAN
SATURN
INSTRUMENT_NAME ULTRAVIOLET IMAGING SPECTROGRAPH
INSTRUMENT_ID UVIS
INSTRUMENT_TYPE SPECTROGRAPH
INSTRUMENT_HOST_ID CO
NODE_NAME
ARCHIVE_STATUS ACCUMULATING
CONFIDENCE_LEVEL_NOTE CONFIDENCE_LEVEL_NOTE = "

Confidence Level Overview
=========================
The UVIS data objects are organized into separate observations.
Each observation contains data taken from one configuration of
the instrument. There may be more than one observation generated
from one instrument configuration. This may occur because science
data generated by the UVIS instrument is dropped when corrupted
data is detected or transmission failures occur. The UVIS ground
system detects this and divides the data into two observations, one
terminated prior to the data drop the next beginning immediately
afterword. The start time and duration of an observation correspond
to the end times of the first and last records in the observation.
Incomplete observations are filled with zeroes. Over 95% of data
taken by the instrument is contained in the UVIS archive.

Only one hardware feature affects UVIS data. A light leak in the
instrument casing causes an increase in the background counts in
the lower half of the EUV channel wavelength range. This effect is
detectable by visual inspection of a graph of the data. No tools
for detection or correction of these background counts exists.

One anomaly in the flight software caused data errors to appear
when multiple windows which do not cover the entire EUV or FUV
detector are defined. In an observation, the data errors appear
as randomly located spikes in detector count values, and one
completely incorrect spatial line located at a random spatial
index. These errors are detectable by visual inspection of a
plot of the data. The anomaly was fixed by a revison to the
software and effects data between launch and 2001-071 09:00:00 UTC

Review
======
This volume has completed a peer review by the PDS. The peer review
panel consisted of Lyle Huber, Mitch Gordon, Steven Adams, Ron Joyner
and Mark Vincent representing PDS, David Judd and Wayne Pryor from the,
UVIS team Diane Connor from the Cassini Project and Kurt Retherford
and John Clarke as outside users."
CITATION_DESC "


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