Apr_17_2000_L269.txt Shift L269 Start at 2000:098:19:00:00 GMT = 2000 Apr 17 7:30pm EDT End 2000 Apr 17 12:00pm EDT See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_17_2000_L269.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running APR1600C, just past apogee. ACIS-S observation of NGC 4258, obsid 350 (started at 1045 GMT). ORBITAL EVENTS: 2000:108:02:24:16.415 96 EAPOGEE ORBIT APOGEE 2000:109:10:07:47.896 96 EPERIGEE ORBIT PERIGEE 2000:110:17:51:20.004 97 EAPOGEE ORBIT APOGEE 2000:112:01:34:15.067 97 EPERIGEE ORBIT PERIGEE 2000:113:09:18:25.737 98 EAPOGEE ORBIT APOGEE 2000:114:17:01:49.819 98 EPERIGEE ORBIT PERIGEE 2000:116:00:45:45.742 99 EAPOGEE ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift AOS DSS-24 (Goldstone) 108:1120 350 Status at start shift was nominal (see note 1) LOS End of shift 108:1430 NOTES/ISSUES/PROBLEMS --------------------- 1) coot was not recording telemetry at start shift. Restarted telemetry monitoring task just before end of shift. Data from snapshot browser was used along with coot data to assess state of health. UTC 2000:108:11:22:02 (Mon Apr 17) f_ACE 6.82e+01 F_ACE 1.12e+07 R km 135860D OBT 2000:108:11:21:36 CTUVCDU 3252051 OBC s/w NRML FMT2_NORM CPEstat OBT 72357696.03 ONLVCDU 3252040 OBC Errs 0 OBSID 350 EPState SUN SIM TTpos 75623 HETG Angle 80.2 PCADMODE NPNT RA 184.753 Bus V 30.87 SIM FApos -467 LETG Angle 78.7 PCONTROL NPNT Dec 47.324 Bus I 27.22 AOFSTAR GUID Roll 203.816 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -6.69 Yaw Rate -0.33 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -1.17 Pitch Rate -0.12 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.15 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 -29.36 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 50.81 SA Resolv 119.27 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 12.56 HRMA power 47.00 -Y SA Amps 13.91 EPHIN Geom LARG OBA power 70.20 +Y SA Temp 112.35 E1300 1 -Y SA Temp 112.97 P4GM 0 Roll Mom. 0.002 SCS 128 P41GM 0 Pitch Mom. -5.835 SCS 129 UpL Cmd Acc 17957 A-Leak 0.3240 Yaw Mom. 3.416 SCS 130 Cmd Rej A 89 B-Leak 0.0520 Chandra's state at start of shift WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 184.753 deg 184.75018 DEC = 47.324 deg 47.32325 ROLL = 203.816 deg 203.81848 Format = 2 2 OBSID = 350 350 SIM FA = -467 -468 SIM TSC = 75623 75624 HETGA = 80.21 deg (OUT) OUT HETGB = 81.96 deg (OUT) OUT LETGA = 79.46 deg (OUT) OUT LETGB = 78.71 deg (OUT) OUT EPHIN A-leak = 0.3240 B-leak = 0.0520 ACE Proton Flux = 81 (2 hr avg in 130-214 keV proton channel) Fluence (130-214KeV) = 5.9E+5 LT 3.6E+8 Radiation Level OK EPHIN Geom = LARG E1300 = 1 LT 1318.52 (RADMON P4GM = 0 LT 3542.40 Triggers) P41GM = 0 LT 100.00 HRC SP PS = ON IM PS = OFF SP Top Step = 43 SP Bot Step = 54 Shield 1 HV = OFF Shield 2 HV = ON Shield 2 Stp = 8 Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 3800 ACIS FP Temp = -119.7 Cold Radiator = -127.9 DEA Pwr = 50.2 DPA Pwr = 42.7 3) Notes from 9:00am meeting: Operations yesterday (Darrel Wicker): - 8 supports (734m, 126m) and 9 dumps over weekend. - All good from S/C. - Uplinked 3 load segments. Good now thru 112:2145 - Executed 2 CAPS. CAP 329 (momentum unload) was done since momentum had built up to 26 ft-lbs since last dump 2 wks ago. Modeling said that it should have been good thru weekend but 2 wks allows errors to accumulate and limit accuracy. Did dump to be safe. - CAP 595 executed to test squeegy mode. See PPP Apr 15 shift report. Mission Planning (Ken/Dan/Paul/Kevin): - APR2300 products out, review later on today. - Possible times for next squeegy mode test obtained. Looks like early in first week of May. - FDB tomorrow to approve OFLS 8.1a.Kevin will transition to use of 8.1a in APR3000 load, as soon as its loaded onto OFFLINE 1 and 2. - Review of MAR12 test load went well. HRC ops and revised LGA characteristics are in. - Will start maneuvering before perigee passage to avoid ACIS FP temp increase (APR3000 load). Assess effect on fuel usage (increased momentum accum thru perigee) in parallel with implementing the fix. Spacecraft Engineering (Wallace): - Will start testing SOP products on ASVT this week (fine att initialization first). SOT (Bill Podgorski): - Radiation levels well below limits. - Reported to group on Paul P's summary of Sat squeegy mode test results. ASCDSOPS(Joy Nichols): - Many quick looks today (see below). GOT (Mike Ambrose): - DSS-16 automation testing indicates that their problems are fixed. - ONLINE 3.7 due in today. 3) Quick Look data review: OBSID Target Time Instrument Comment ----- ------ -------------- --------------- --------------- 00020 HD 37001 2000:101:19:43 ACIS-I OK 00760 IC 443 2000:101:20:42 ACIS-I Overexposed in quick look. 00429 MITG J2019+1127 2000:103:03:37 ACIS-S, no grating Can't see a source? 00891 A2029 2000:103:06:23 ACIS-S, no grating. OK 00753 PSR B1757-24 2000:103:12:27 ACIS-S, no grating. OK 00101 VELA X-1 2000:104:09:52 ACIS-S/HETG OK 00635 RHO OPH CORE 2000:104:18:13 ACIS-I Large object at edge of S chip field. 00619 OPHIUCHI MOSAIC #2 2000:105:23:11 ACIS-I OK 00413 NGC 5055 2000:106:02:47 ACIS-S, no grating OK 00540 A1689 2000:106:04:02 ACIS-I OK 00959 V1494 Aql 2000:106:00:49 ACIS-I OK 62892 Squeegy Mode 2000:106:22:20 S0 Good.