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UARS WEEKLY STATUS REPORT - 06 APR 2001
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SOLSTICE
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SOLSTICE continues to operate normally, taking solar data on all available
orbital tracking periods and stellar calibration observations whenever
possible. We continue to gather enough data to meet all the SOLSTICE
science objectives during this period of reduced tape recorder operations.
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SUSIM
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Nothing received.
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ACRIM
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Nothing received.
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PEM
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PEM/AXIS was activated in its full power mode on April 1. At the current
time, AXIS is not generating energy deposition. SwRI is looking into this.
Tests of AXIS production code on the rehost computer are continuing.
At the present time, PEM energy deposition from its spectrometers is not
being generated. Recent data configuration changes have affected PEM software
causing multiple failures. These failures are being reviewed by the PEM team.
In order to correct for new telemetry requirements, PEM will need to update
processing code with a patch delivery. The delivery patch may include changes
which would allow the PEM software to execute on a DEC Alpha machine. GSFC is
helping PEM with some DEC Alpha particulars which have caused PEM level 3
code to fail on DEC Alpha machines (software below level 3 executes on the
DEC Alpha).
PEM has examined its processed files of the rehost machine and has found
differences between those and the cataloged files in the UARS database. The
PEM investigation found that the Level 0 files used to generate the rehost
data were not the same as those used in previous production. Therefore, PEM
finds that the test is not valid and does NOT APPROVE production of PEM data
on the rehost machine at this time.
The PEM team is working on replacing the PEM:: machine with a DEC Alpha
machine to be called PEM2K::. PEM has requested DAP command capability with
the CMS from PEM2K::. Tests of the NRT data transfer from CDHF2:: through
PEM2K:: to the unix computer running the PEM GSE software show no difference
between equivalent NRT files transferred from PEM::. Thus, NRT data from
CDHF2:: is captured correctly on PEM2K::. Tests of the NRT data transfer
from CDHFB:: were not successful from both PEM:: and PEM2K::. Results of the
test of NRT data transfers from the rehost computer acted like the rehost
computer did not recognize either PEM machine. Investigation is underway.
PEM has been working with GSFC on allowing commanding of the PEM
instrument by creating DAPs on the PEM2K machine and submitting them to the
CMS. So far, this has not been achieved. It was discovered that PEM2K is
running Openwindows version 7.2-1 which operates differently across the
network than Openwindows version 7.1-2 (the CDHFB operating system). Compaq
is investigating to determine a solution. In the mean time, Steve Bove made
some suggestions which seem to have improved the PEM2K:: to UCMS:: image
execution ability; however, the CMS has had troubles recently and it appears
that the UCMS:: definitions for PEM2K:: must not be correct on the UCMS:: node.
PEM is waiting on a reply back from GSFC once the CMS is again stable.
Updated HEPS calibration parameters have been finalized and are ready for
delivery. Updated MEPS quality calibration files have been finalized and are
ready for delivery. Level 3 software errors, discovered by Dr. Dean Pesnell,
have been fixed; his suggestions have been incorporated with in the PEM
production code. Both updated HEPS and MEPS calibration data, along with the
Level 3 code changes, will influence the in-situ energy deposition predictions,
so new versions of PEM energy deposition Level 3 files will be generated.
*Beginning of power orbit day (PEM activation): array current >5 amps, array
voltage >53.5 volts, and battery current >2.0 amps.
End of power orbit day (PEM deactivation): time in power orbit day >4 minutes,
array current <9 amps, and battery currents <0.2 amps.
Power orbit day variation: ~39-40 min at yaw to ~50-51 min at maximum beta.
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HALOE
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Nothing received.
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MLS
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Nothing received.
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HRDI
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HRDI continues to function normally, making wind measurements during
the sunlit parts of orbits nearly every day, and measuring nighttime winds
when power is available.
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WINDII
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Nothing received.
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MPG
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The MPG participated in two meetings this week. The first
meeting was held to discuss the causes of UARS Command
Management System problems which began on 26 March 2001.
The second meeting was the UARS Monthly Status Review which
was held on 4 April 2001.
Following repair of the UARS Command Management System
on 2 April, daily processing of instrument Daily Activity
Plans continues with no problems. Instrument operations
schedule is now complete to 30 May 2001.
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CDHF
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CURRENT SYSTEM
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- We are "catching up" the HALOE production processing. The Auxialiary
(SOL) data was delayed due to an upgrade at the Solar Terrestrial Dispatch
System.
DAAC DATA
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- Data created in the month of January, 2001 for HALOE, NMC and UKMO
has been loaded into the DAAC Transfer tables. DAAC was notified.
- MLS V5 data created from Feb. 7 - March 14, 2001 was loaded into
the DAAC Transfer Tables. DAAC was notified.
UARS CDHF REHOST
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Initiated a mandatory upgrade of the HSM software on 3/23/01. This is
the software that "Puts" and Gets" data from the silo. With this upgrade,
SLS is now known as Media and Device Management Services (MDMS). Also, it was
found that many of the commands used by the SLS were changed, rendering many
comfiles unusable for operations. We are in the process of making modifications
and verifying the upgrade. The current system is still the "real" system until
remaining issues are resolved. This should be about two weeks. Production
processing results are not changed with this upgrade.
- Attitude Extraction V7.3 successful and promoted to production mode.
Being processed on current and rehost systems.
- Sensor Extraction V5.0 successful and promoted to production mode.
Being processed on Rehost System only per FDF.
- Observatory Log V3.4 successful and promoted to production mode.
Being processed on Rehost System only.
- HALOE V4.82 testing successful. HALOE has successfully validated
the output product created during the parallel processing. HALOE
requested an older UARS DAY to be processed for comparison against
current system output. HALOE has successfully validated the
output product for UARS day 3133.
- HRDI V4.4 testing successful. HRDI has successfully validated
the output product.
- GPI V4.05 testing successful. Frank Huang continues to see a problem
with the output product. We believe related to last INGRES Key
received.
- PEM V3.32 (JOBS 1, 2) testing successful. PEM continues to
investigate differences found in the output product and are also
looking at the output from other days processed.
- PEM group requested a UARS DAY be processed to include (JOB 3).
JOBS 1, 2 passed, JOB 3 failed and PEM is investigating failure.
- SOLSTICE V4.62 (JOB 1) (LEVEL1) tested successfully. Solstice has
successfully validated and is satisfied with the results of the
output product on the rehost system.
- Testing will continue with SUSIM V7.2 after rebuild and relink
(CDS_VIEW_VEC_CHECK.FOR;1).
***SUSIM PI, Ed Esfandiari will be out of town March 15 - April 28.
Any validation results during that time will be on hold until
Esfandiari returns.
- WINDII V5.11a testing successful. Currently waiting validation
results from the WINDII group.
NRT Status
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Completed
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HALOE - Satisfied and ready
SUSIM - Satisfied and ready
MLS/Acrim - Satisfied and ready (ACRIM commanding done from JPL)
CLAES - off.
ISAMS - off.
Remaining
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SOLSTICE - All works, but remote unix box in Colorado refusing connection
from Rehost.
Action: Solstice/Boulder/NCAR needs to allow access from Rehost
or copy file to cdhf2 and to Unix box afterwards
PEM - Need testing to identify problems with user code
Action: Work with PEM on existing datafiles to determine problems,
schedule final test, or copy file to cdhf2/PEM for pem analysis
HRDI - Need test to confirm changes to user code
Action: Work with existing files, schedule final test
or copy file to cdhf2/HRDRAC for HRDI analysis
WINDII - Need confirmation from Ops at York U, Canada
Action: Work with existing files, schedule final test
or copy file to cdhf2/WINDII for WINDII analysis
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FOT
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REPORTING PERIOD
This report covers 24 March 2001 (Orbit 52005, GMT Day 083) through 30 March
2001 (Orbit 52110, GMT Day 089).
SPACECRAFT OPERATION
The observatory is now in Reverse Flight (Northern Hemisphere viewing) and is
performing nominally under two-battery operations. The instrument operational
changes were:
INSTRUMENT OPERATIONAL CHANGES
Instrument Time Orbit Comment
-None this report period.
The beta angle ranged between the angles of 31.4 degrees to 48.7 degrees for
this report period. The beta angle is now decreasing towards a minimum angle
of 52 degrees on 02 April 2001 (DOY 074).
Spacecraft battery 1, 2, and 3 performance monitoring continues. Battery 1
remains OFF the charge relay. Battery 2 and Battery 3 are currently
maintaining greater than 23.8 V end-of-night (EON) load bus voltage. Battery
temperatures are stable with a temperature delta between Battery 2 and Battery
3 of 1.3 and 1.6 degrees C. Additional battery performance data for each
battery on 23 March 2001 and 30 March 2001 are provided in Appendix D.
The clock error ranged from Ð10.9 to 10.4 msec during this report period.
Clock rate adjustments are listed in Appendix C.
All instrument and subsystem engineers were advised on the initial excursion of
ALERTS or Out-Of-Limits conditions detected by the FOT for this report. A
summary is listed below and the details of ALERT and Out-Of-Limits occurrences
are listed in Appendix B.
¥ OUT-OF-LIMITS = 00
¥ ALERTS = 00
The following real-time command sheets were executed for the listed operational
element(s) during this report period (see Appendix A).
¥ FOT = 20
UARS Anomaly Reports initiated during this report period are listed in Appendix
E and summarized below.
¥ FOT = 04
One (1) Anomaly Report remained OPEN at the end of this report period (see
Appendix E).
TRANSPONDER FREQUENCIES:
· Transponder A: 00/316 - 2287.496493
· Transponder B: 02/026 - 2287. 49920005
GROUND SYSTEM OPERATION
Four (4) operational support problems occurred this period. Anomaly Reports
are included in Appendix E.
The data loss calculations supplied by Data Capture Facility (DCF) from mission
start through UTC Day 01/067 show the observatory data loss to be 300 hours, 1
minute, 12.760 seconds. This shows no change since the last report period. This
is a 0.39 percent data loss, which equals a 99.61 percent data capture for the
mission.
OTHER SIGNIFICANT EVENTS
UARS SATELLITE OPERATIONS
UARS is using both the Fine Sun Sensor (FSS) and the Three Axis Magnetometer
(TAM) as inputs to UFLTR this week. The FOT is pleased with their performance,
but continues to make adjustments to the TAM alignment to improve its
performance and UARS's attitude.
The FOT awaits the completion of the FSW patch that will improve the magnetic
field model from a 5th order to 7th order solution. The patch is currently
begin tested on the UARS Testing and Training Simulator (UTTS). Testing
should be completed in the next few weeks.
MEETINGS
The FOT attended the UARS TAC Replacement Meeting on Monday, March 26, 2001.
The FOT attended a Hazardous Communication meeting on Thursday, March 29, 2001.
The FOT held a working group meeting on Friday, March 30, 2001 with system
administrators to discuss the plan for getting the prime CMS back to
operational.
FUTURE SIGNIFICANT EVENTS
The next UARS Yaw slew is scheduled for 19 April 2001 (DOY 109). This maneuver
will be a Reverse to Forward Flight maneuver (Southern Hemisphere viewing).
Attachments: Appendix A, Real-time Commands Sheets
Appendix B, Out-Of-Limits & ALERT Occurrences
Appendix C, Clock & Solar Array Rate Corrections
Appendix D, UARS Battery Performance Data
Appendix E, UARS Anomaly Reports
APPENDIX A
REAL-TIME COMMAND SHEETS
Week ending 30 March 2001
ORBIT AOS NO. SUBSYS REASON
----- --- --- ------ ------
52114 083/0619 01-180 NBTR NOOPS D-083
52122 083/1922 01-181 NBTR NOOPS D-084
52129 084/0620 01-181 NBTR NOOPS D-0849
52129 084/0620 01-182 OBC Clk Adj 0.00 to 20.6 msec/day
52137 084/1837 01-183 NBTR NOOPS D-085
52144 085/0621 01-183 NBTR NOOPS D-085
52150 085/1602 01-185 OBC Magmod update
52152 085/1826 01-186 NBTR NOOPS D-0869
52149 085/1415 01-184 OBC Clk Adj 20.6 to 0.00 msec/day
52160 086/0727 01-186 NBTR NOOPS D-086
52167 086/1828 01-187 NBTR NOOPS D-087
52170 086/2248 01-188 OBC Memory Monitor update
52175 087/0728 01-187 NBTR NOOPS D-087
52182 087/1829 01-189 NBTR NOOPS D-088
52188 088/0409 01-190 OBC Clk Adj 0.00 to 20.6 msec/day
52190 088/0729 01-189 NBTR NOOPS D-088
52202 089/0227 01-191 NBTR NBTR PBK/RTS-58
52205 089/0729 01-191 NBTR NOOPS D-089
52212 089/1832 01-193 NBTR NOOPS D-090
52212 089/1930 01-194 OBC Clk Adj 20.6 to 0.00 msec/day
_______________________________________________________________________________
APPENDIX B
OUT-OF-LIMITS & ALERTS OCCURRENCES
Week ending 30 March 2001
The following Out-Of-Limits occurrences were detected:
MNEMONIC STATE DESCRIPTION ORBITS
-------- ----- ----------- ------
-None this report period
The following ALERT occurrences were detected:
MNEMONIC DESCRIPTION ORBITS
-------- ----------- ------
-None this report period
_______________________________________________________________________________
APPENDIX C
CLOCK & SOLAR ARRAY RATE CORRECTIONS
Week ending 30 March 2001
CLOCK DRIFT RATE ADJUSTMENTS
ORBIT TIME CLOCK RATE CHANGE
----- ----- -----------------
52129 084/0630 Clk Adj 0.00 to 20.6 msec/day
52149 085/1430 Clk Adj 20.6 to 0.00 msec/day
52188 088/0412 Clk Adj 0.00 to 20.6 msec/day
52212 089/1945 Clk Adj 20.6 to 0.00 msec/day
___________________________________________________________________________
APPENDIX D
UARS BATTERY PERFORMANCE DATA
Week ending 30 March 2001
23 Mar 2001 - GMT Day 082 Beta = 28.0 deg, SA Pos = 269 deg
DIFF V (mV) TEMP (C) CURR (amp) EON V AVE C/D AVE
BAT MAX/MIN MAX/MIN MAX/MIN MIN RATIO DOD(%)
--- ----------- --------- ---------- ------ ------- ------
1 +039.2/+011.2 -3.05/-4.31 +0.0/+0.0 13.0 0.000 0.0
2 +16.8/-89.6 +6.11/+4.51 +28.8/-15.2 24.5 1.030 22.0
3 +33.6/-33.6 +5.15/+3.87 +28.8/-16.0 24.5 1.020 22.0
30 Mar 2001 - GMT Day 089 Beta = 48.7 deg, SA Pos = 269 deg
DIFF V (mV) TEMP (C) CURR (amp) EON V AVE C/D AVE
BAT MAX/MIN MAX/MIN MAX/MIN MIN RATIO DOD(%)
--- ----------- -------- ---------- ------ ------- ------
1 +039.2/+011.2 -3.05/-4.62 +0.0/+0.0 13.0 0.000 0.0
2 +22.4/-67.2 +5.15/+3.87 +26.4/-15.2 25.0 1.050 19.6
3 +22.4/-44.8 +4.51/+2.92 +25.6/-15.2 25.0 1.050 19.3
V/T LEVEL CHANGES
ORB# TIME LVL FR-TO
----- ---- ----------
-no changes V/T 5
_______________________________________________________________________________
APPENDIX E
UARS ANOMALY REPORTS
Week ending 23 March 2001
NEW ANOMALY REPORTS GENERATED
AR NO. SUBSYS ORBIT TIME TTR PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
01-018 FOT 52122 083/1922 N/A No link to FDF from POCC
01-014 FOT 52125 083/2327 14170 Generic Late Acquisition
01-014 FOT 52186 088/0107 14170 Generic Late Acquisition
01-014 FOT 52204 089/0550 14170 Generic Late Acquisition
ANOMALY CLOSURE INFORMATION RECEIVED
AR NO. SUBSYS ORBIT TIME TTR PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
01-018 FOT 52122 083/1922 N/A No link to FDF from POCC
ANOMALY INVESTIGATION REPORTS GENERATED
AR NO. SUBSYS ORBIT TIME TTR PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
-None this report period
OPEN ANOMALY REPORTS
AR NO. SUBSYS ORBIT TIME TTR PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
01-014 FOT see list Mar 01 14170 Generic Late Acquisition
SEVNTFW01/13