Instrument Status
• On/Off Cycle: 26
• Hours On: ~56,000 hours
– Continuous operations since 1/15/2005 (probe relay)
• HDAC Filament Modulation:
– Filament 1: 100.28 hours
– Filament 2: 12.22 hours
– Last: 2006/255
UVIS TEAM MEETING 1/2007
1
FSW Status
• No Changes since last meeting
• Old ISA
– ISA Z70771
• Fixed by FSW patch in C24
• Fixed by FSW V1.3 starting C31
– ISA Z86939 (bad EUV data in S11 icylon)
• Probably FSW problem
• Workaround by updating the instrument setup
– That is if we don’t forget to use the updated setup
(UVIS_026RH_STARE001_PRIME)
UVIS TEAM MEETING 1/2007
2
GSW Issues
• Problem with HSP data set
– Duplication of the first record when the data set was
created due to data loss
– Data has been re-ingested
• Time error in DAPS metadata (start time)
– Caused by the correct clock kernel not being ingested
– Time information has been re-written
UVIS TEAM MEETING 1/2007
3
Operational Issues
• UVIS_026ST_ALPVIR002_PRIME (T16)
– Incorrect pointing dead band requested
• (2.0, 2.0, 2.0) vs (0.5, 0.5, 0.5)
– Check has been added to our checklist
– ISA Z89032
UVIS TEAM MEETING 1/2007
4
Planning/Sequencing Issues
• No DSN allocation until late in the sequence
development
– No sponge bit
– It is difficult for us to participate to the R/T sponge bit
• S27 may be the first time we will be able to do some of it
• RBOT analysis
– JPL is trying to minimize the time the RW are under
300 rpm
– Late pointing design modification
• S27: UVIS_037ST_UREPSLUP001_PRIME - Added +20
degree rotation around Y axis
• S28: UVIS_040ST_URTHEARA001_PRIME - Added a +70
degree rotation around Y axis
UVIS TEAM MEETING 1/2007
5
Data Corruption (ISA Z89728)
• First reported on 2006/336
• Probably caused by 1 to 4 faulty sub modules on
SSR-A
• Consequences:
– Corrupted packet header (JPL and instruments can filter
that via ground processing) => data gap
– Corrupted science header => data gap
• Has caused the L0 processing software to crash
• May be able to filter that via ground processing.
– Corrupted science data
• Impossible to filter during L0 processing
• Trying to query JPL database around time of data corruption
– Not always successful.
UVIS TEAM MEETING 1/2007
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Example of corrupted data
• UVIS_034RI_0PHASE001_VIMS: record #3
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
UVIS TEAM MEETING 1/2007
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Example of corrupted data
• UVIS_034RI_0PHASE001_VIMS: record #4
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
UVIS TEAM MEETING 1/2007
8
Data Corruption
• Working around the corrupted data
– Time consuming
– Trial and error
– Example: UVIS_036RF_FMOVIE001_VIMS
• Data from 2007-005T23:31:41 to 2007005T23:56:41 was not ingested.
UVIS TEAM MEETING 1/2007
9
Notes on DAPS IDL routines
• You should use the ICY version of
convert_sclk.pro
– Make sure that you use the last clock kernel
(cas00102.tsc)
• If you need to use the old version of
convert_sclk.pro it is up to date on the UVIS
team site under the name of old_convert_sclk.pro
(“version 1.2” appears on the header of the file)
UVIS TEAM MEETING 1/2007
10