Feb_10_2000_L202.txt Shift L202 Start at 2000:041:12:30:00 GMT = 2000 Feb 10 7:30am EST End 2000 Feb 10 12:00pm EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Feb_10_2000_L202.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running FEB0600b load. Observing GK PERSEI with ACIS-S, OBSID 650. NOTICE: Working on a Gamma Ray burst TOO. MP working up the load. Plan to schedule added COMM at 0345 GMT day 42 (late tonight EST). Observation would begin just after midnight EST. Will be 10Ksecs. Load review later on this evening. 2000:040:16:04:15.877 70 EPERIGEE ORBIT PERIGEE 2000:041:23:48:05.540 71 EAPOGEE ORBIT APOGEE 2000:043:07:31:44.307 71 EPERIGEE ORBIT PERIGEE 2000:044:15:16:22.574 72 EAPOGEE ORBIT APOGEE 2000:045:23:00:48.899 72 EPERIGEE ORBIT PERIGEE 2000:047:06:45:48.112 73 EAPOGEE ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 041:1230 650 ACE 2 hour Fluence is 2.1E+5 041:1300 State at last pass was nominal (see note 1) AOS DSS-24 (Goldstone) 041:1400 Chandra status AOS was nominal (see note 2) 041:1425 ACE 2 hour fluence is 3.9E+6 and rising 041:1432 4.7E+6 041:1457 7.4E+6 041:1557 LOS DSS-24 041:1600 End of shift 041:1600 NOTES/ISSUES/PROBLEMS --------------------- 1) State at last COMM: UTC 2000:041:08:01:02 (Thu Feb 10) f_ACE 5.77e+01 F_ACE 7.96e+05 R km 118853A OBT 2000:041:07:59:52 CTUVCDU 12313727 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 66556792.78 ONLVCDU 12313720 OBC Errs 0 OBSID 650 EPState SUN SIM TTpos 75623 HETG Angle 80.6 PCADMODE NPNT RA 52.780 Bus V 30.55 SIM FApos -467 LETG Angle 79.1 PCONTROL NPNT Dec 43.904 Bus I 27.73 AOFSTAR GUID Roll 280.828 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang 4.30 Yaw Rate 0.00 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang -4.98 Pitch Rate 0.22 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.06 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.19 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -9.95 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 50.89 SA Resolv 100.11 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 13.14 HRMA power 113.30 -Y SA Amps 14.30 EPHIN Geom LARG OBA power 59.30 +Y SA Temp 116.58 E1300 2 -Y SA Temp 115.85 P4GM 0 Roll Mom. -1.868 SCS 128 P41GM 0 Pitch Mom. -4.717 SCS 129 UpL Cmd Acc 45959 A-Leak 0.4000 Yaw Mom. 1.197 SCS 130 Cmd Rej A 134 B-Leak 0.0640 Expected RA, Dec, Roll (degrees): 52.77794, 43.90439, 280.82969 2) Chandra's state at 041:XXXX was: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 52.777947 deg 52.77794 DEC = 43.904399 deg 43.90439 ROLL = -79.170317 deg -79.17031 Format = 2 2 OBSID = 650 650 SIM FA = -467 -468 SIM TSC = 75623 75624 HETGA = 80.58 deg (OUT) OUT HETGB = 81.33 deg (OUT) OUT LETGA = 80.21 deg (OUT) OUT LETGB = 79.08 deg (OUT) OUT EPHIN A-leak = 0.4160 B-leak = 0.0640 ACE 2 HR Proton Fluence (130-214KeV) = 3.9E+6 LT 3.6E+8 HRC SP PS = OFF IM PS = ON IM Top Step = 42 IM Bot Step = 53 Shield 1 HV = OFF Shield 2 HV = ON Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 4300 ACIS FP Temp = -119.9 DEA Pwr = 50.8 DPA Pwr = 40.8 3) Notes from 9:00am meeting: Operations (Darrel Wicker): - 3 supports yesterday, 3 good dumps. Load good till day 43. - Loss of data (9 min) from dump yesterday due to DSN hardware problem has been fixed by use of real-time data. - Two corruptions of real-time data in last day were due to testing on the automated 26 meter dish. - Ran CAP 552 to dump CPE warm start count. Was 2. Will recommend resetting this since if it gets to 6 CPE will cold boot. - Ran CAP 550 to stub SCS 3, 83, 97 and change KW, BATTERY_DISCONNECT_CIRCUIT_CHECK_LIM, all EPS changes in prep for next eclipse season. Mission Planning (Kevin Marsh/Ken Gage): - Working next week's load. S/C (Jeff Shirer): - Had a large attitude correction after maneuver last week. Jeff will look at it in detail. SOT (Bill Podgorski): - Discussed ACIS-S boresight drift and possible connection to thermal drifts over first 6 months of mission. ASCDSOPS (Joy Nichols): - One quick look, see below. 4) Quick Look data review: OBSID Target Time Comment ----- ------ -------------- ------- 00771 CRAB NEBULA 2000:038:09:19 ACIS-S, Looks very strange as a quick look.