Dec_06_1999_L136.txt Shift L136 Start at 1999:340:13:00:00 GMT = 1999 Dec 6 8:00am EST End 1999 Dec 6 1:00pm EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Dec_06_1999_L136.txt. SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running load DEC0599 EVENTS DONE OBSID -------------- ---- ----- Start Shift 340:1300 910 AOS DSS-61 (Madrid) 340:1630 579 Chandra ststus at AOS was nominal (see notes 3 & 4) LOS 340:1800 End of shift 340:1800 NOTES/ISSUES/PROBLEMS --------------------- 1) Chandra's last real-time state (via snapshot browser): UTC 1999:340:09:01:01 (Mon Dec 6) f_ACE 3.37e+01 F_ACE 2.17e+06 R km 130481A OBT 1999:340:08:59:49 CTUVCDU 6851711 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 60857989.42 ONLVCDU 6851704 OBC Errs 0 OBSID 910 EPState SUN SIM TTpos 89992 HETG Angle 80.6 PCADMODE NPNT RA 180.000 Bus V 30.55 SIM FApos -535 LETG Angle 79.1 PCONTROL NPNT Dec 55.535 Bus I 25.96 AOFSTAR GUID Roll 63.089 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang 4.70 Yaw Rate 0.10 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 6.21 Pitch Rate 0.18 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.19 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.32 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -9.35 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 50.89 SA Resolv 99.23 Batt 3 SOC 100.00% Cold Rad -120.7 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 12.37 HRMA power 94.40 -Y SA Amps 13.53 EPHIN Geom LARG OBA power 35.10 +Y SA Temp 116.95 E1300 1 -Y SA Temp 116.58 P4GM 0 Roll Mom. -3.657 P41GM 0 Pitch Mom. -1.223 UpL Cmd Acc 65394 A-Leak 0.1920 Yaw Mom. 4.504 Cmd Rej A 116 B-Leak 0.0320 Everything looks nominal. 2) 9:00am Meeting Notes: - Darrell reported on OPS. Nine (9) supports over the weekend. There were recorder dump problems with DSS-27 (Goldstone). Five of 16 dumps over weekend were bad, however, all of the data was downloaded. The problem is associated with the use of DSS-27 (a 34m but works like a smaller antenna) near apogee. Four loads were uplinked successfully. The NOV2899E load was finished and the first sections of the DEC0599 load were uplinked and started. There were two instances over the weekend of the ground station (both Madrid) having the wrong ephemeris files. The dumps were successfully completed in each case, but the real-time data period was shortened. This will be investigated. Three supports are scheduled in the next day. - Joy Nichols that the data processing for this load (DEC0599) was running behind due to the fact that the load was not ingested into the archive soon enough. Hence, no quick look plots. - Ken and Kevin hope to provide the DEC1299 load products by tonight or tomorrow. The DEC19 OR list is available and is being worked on. - SOT Lead report: I reported that I could not write into the SOT shift report area as of 9:00am. This is apparantly due to some upgrading and maintenance over the weekend. It since has been fixed temporarily for the SOT shift dir only. Systems is working on a final fix. I reported on SIM mechanism usage vs. pre-launch assumptions and life testing. The plots can be seen at: http://cface4.harvard.edu/~wap/SIM_Mechanism.html Report in process. - Discussion from Roger on the SI safing products. Eric Martin is to get these out for review today. A CAP package is to be out by Wednesday for a review/walk-through on Thursday. 2) Chandra's state at AOS 340:1630 was: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 4 4 FIDS = 3 3 RA = 163.203353 deg 163.203352 DEC = 57.458786 deg 57.458785 ROLL = 82.479611 deg 82.4796 Format = 1 1 OBSID = 579 579 SIM FA = -715 -716 SIM TSC = -50504 (HRC-I) -50505 HETGA = 80.58 deg (OUT) OUT HETGB = 81.33 deg (OUT) OUT LETGA = 80.58 deg (OUT) OUT LETGB = 79.08 deg (OUT) OUT EPHIN A-leak = 0.3560 B-leak = 0.0560 ACIS = ACIS Workstation has stopped updating due to errors. Demetrios and Bob Goeke are investigating. HRC IM PS = ON IM Top Step = 77 IM Bot Step = 89 Shield 1 HV = OFF Shield 2 HV = ON Shield 2 HV step = 8 VE Rate 1 = ~33 VE Rate 2 = ~50 Shield Rate 1 = ~4400 Shield Rate 2 = ~4400 All OK per Jon Chappell 4) OC noted that telemetry MSID LDRTPOS (3LDRTPOS in this case) was showing a yellow warning, value was -17 counts. This is the SIM TSC Tab 2 crossing error value, which was predicted to be +/- 8cts based on pre-launch testing. However, we have typically seen values ranging as high as +/-22 counts for this quantity. We are looking into why this is so, but do not believe that there is a problem (there is no trend). After looking into it we will probably change the error/warning limits.