SOT shift report 2000-09-29 M435 Start at 2000:273:16:00 GMT = 2000 Sept. 29 12:00pm EDT End 05:30pm EDT See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Sept_29_2000_M435.txt SOT Lead Robert Cameron Spacecraft Bill Podgorski Plan: ---- Running load: SEP2800b. Insert the LETG at the end of the TOO observation of GRB000926. Seq # ObsID Target start SI Grat RA dec roll ------------------------------------------------------------------------------------------ 500084 00598 GRB000926 2000:273:16:40:24.043 ACIS-S LETG 256.0095 51.7948 287.79 200026 00028 YY GEM 2000:273:21:30:00.000 HRC-S LETG 113.6701 31.8476 78.28 EVENTS GMT OBSID ------ ---- ----- AOS DSS-24 (Goldstone 34m) 1620 598 LOS DSS-24 (Goldstone 34m) 1730 AOS DSS-54 (Madrid 34m) 1900 598 LOS DSS-54 (Madrid 34m) 2130 Orbital Events: -------------- 2000:272:01:24:46.327 158 EAPOGEE ORBIT APOGEE 2000:273:09:08:21.466 158 EPERIGEE ORBIT PERIGEE 2000:274:16:51:48.585 159 EAPOGEE ORBIT APOGEE 2000:276:00:34:51.878 159 EPERIGEE ORBIT PERIGEE 2000:277:08:18:48.989 160 EAPOGEE ORBIT APOGEE 2000:278:16:02:35.176 160 EPERIGEE ORBIT PERIGEE NOTES/ISSUES/PROBLEMS --------------------- DSS-24 contact: Chandra is recording on SSR-B as SSR-A dump started, which is unexpected, and currently unexplained. The DSS-24 contact was extended to include both the planned playback from SSR-A, and an extra playback from SSR-B. SSR-B was left powered on at the end of the DSS-24 contact. RT telemetry loss to OCC from DSS-24: 1726 - 1730 UT. In the DSS-54 contact, the playback from SSR-A was nominal, with no transition to record on SSR-B. The LETG insertion was performed without problem, using CAP 660 Rev C. The insertion was performed with one 152-second move, plus 15 128-ms moves, for a total LETG drive time of 153.9 seconds. The previous LETG insertion on September 25 required 15 128-ms moves. MCE motor back-emf during the large move was about 6.6 volts. UTC Timeline of events: 2010: Start CAP 660 Rev C. 2012: NMAN mode. 2015: ACIS stop science command. 2016: ACIS science report downlink complete. 2022: Format 4. 2026: apply LETG motor power. 2028: 152-second insertion. 2030 - 2040: 15 short insert moves. 2041: LETG inserted (indicated by both MCE-A and MCE-B insert limit switches) 2043: CAP 660 Rev C completed. 2054: Maneuver start 2056: Format 1. An SSR-A playback was performed after the TOO observation completed, to expedite processing of the TOO data. Chandra snapshot ---------------- UTC 2000:273:17:01:01 (Sep29) f_ACE 2.79e+02 F_ACE 2.54e+05 Kp 1.7 R km 78912A OBT 2000:273:17:00:38 CTUVCDU 8632959 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 86634038.36 ONLVCDU 8632944 OBC Errs 0 OBSID 598 EPState SUN SIM TTpos 72439 HETG Angle 79.8 PCADMODE NPNT RA 256.010 Bus V 30.55 SIM FApos -467 LETG Angle 78.3 PCONTROL NPNT Dec 51.796 Bus I 32.79 AOFSTAR GUID Roll 287.793 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -2.98 Yaw Rate 0.06 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -1.65 Pitch Rate -0.11 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.11 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.28 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta 9.87 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 50.81 SA Resolv 79.97 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 16.05 RADMON ENAB HRMA power 100.20 SCS 128 ACT -Y SA Amps 17.23 EPHIN Geom LARG OBA power 117.30 SCS 129 DISA +Y SA Temp 111.43 E150 11.6 SCS 130 ACT -Y SA Temp 112.04 E300 0.2 Roll Mom. -11.467 E1300 0.0 Pitch Mom. -3.435 UpL Cmd Acc 44089 EPH A-Leak 0.2120 P4GM 0.0 Yaw Mom. -0.271 Cmd Rej A 16 EPH B-Leak 0.0400 P41GM 0.0 Before LETG insertion: UTC 2000:273:19:46:02 (Sep29) f_ACE 2.25e+02 F_ACE 1.56e+06 Kp 1.7 R km 94432A OBT 2000:273:19:45:42 CTUVCDU 8671604 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 86643942.46 ONLVCDU 8671592 OBC Errs 0 OBSID 598 EPState SUN SIM TTpos 72439 HETG Angle 79.8 PCADMODE NPNT RA 256.009 Bus V 30.71 SIM FApos -467 LETG Angle 78.3 PCONTROL NPNT Dec 51.797 Bus I 27.73 AOFSTAR GUID Roll 287.793 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -6.66 Yaw Rate -0.04 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -1.52 Pitch Rate -0.06 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.12 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.17 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 9.89 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 50.97 SA Resolv 79.97 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 RADMON ENAB HRMA power 39.20 SCS 128 SUSP -Y SA Amps 14.30 EPHIN Geom LARG OBA power 74.20 SCS 129 INAC +Y SA Temp 112.04 E150 20.3 SCS 130 ACT -Y SA Temp 112.35 E300 0.8 Roll Mom. -11.460 E1300 0.0 Pitch Mom. -3.445 UpL Cmd Acc 46202 EPH A-Leak 0.2800 P4GM 0.0 Yaw Mom. -0.111 Cmd Rej A 53 EPH B-Leak 0.0520 P41GM 0.0 After LETG insertion: UTC 2000:273:20:44:03 (Sep29) f_ACE 2.43e+02 F_ACE 1.92e+06 Kp 1.7 R km 99183A OBT 2000:273:20:43:37 CTUVCDU 8685169 OBC s/w NRML FMT4_EPS CPEstat NORM OBT 86647417.74 ONLVCDU 8685160 OBC Errs 22 OBSID 598 EPState SUN SIM TTpos 72439 HETG Angle 80.2 PCADMODE NMAN RA 256.009 Bus V 30.55 SIM FApos -467 LETG Angle 4.5 PCONTROL NPNT Dec 51.793 Bus I 29.75 AOFSTAR GUID Roll 287.793 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 7.41 Yaw Rate -0.04 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 3.32 Pitch Rate -0.06 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.12 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.14 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 9.90 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 50.97 SA Resolv 79.94 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 14.10 RADMON ENAB HRMA power 67.50 SCS 128 ACT -Y SA Amps 15.26 EPHIN Geom LARG OBA power 59.30 SCS 129 ACT +Y SA Temp 111.43 E150 5.2 SCS 130 ACT -Y SA Temp 112.04 E300 0.2 Roll Mom. -11.460 E1300 0.0 Pitch Mom. -3.644 UpL Cmd Acc 46391 EPH A-Leak 0.3040 P4GM 0.1 Yaw Mom. 0.174 Cmd Rej A 88 EPH B-Leak 0.0560 P41GM 0.0 2) Status at 273:1700: Observed Expected -------- -------- PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 256.0095 deg 256.0095 DEC = 51.7948 deg 51.7948 ROLL = 287.79 deg 287.79 Format = 2 2 OBSID = 598 598 SIM FA = -467 -468 SIM TSC = 72439 72440 HETGA = 79.84 deg (OUT) OUT HETGB = 80.59 deg (OUT) OUT LETGA = 79.46 deg (OUT) OUT LETGB = 78.34 deg (OUT) OUT HRC IM PS = OFF, 0, 0 SP PS = ON, 43, 54 Shield 1 HV = OFF, 0 Shield 2 HV = OFF, 0 Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 0 ACIS FP Temp = -118.7 DEA Pwr = 51.5 DPA Pwr = 42.6 Science State = Science Active Radiation --------- Radiation levels are ok. ACE 2hr fluence is 2.1e6 vs. threshold 3.6e8. Orbital fluence is 2.5e5 vs. threshold 1.0e9. Evaluation of QL data --------------------- There are no new quick look data on this shift.