Mar_30_2000_L251.txt Shift L251 Start at 2000:090:12:30:00 GMT = 2000 Mar 30 7:30am EST End 2000 Mar 30 11:00am EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Mar_30_2000_L251.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running MAR2600C, continue observing 'SGR B2' with ACIS-I, obsid 944. Terminate 944 at 090:1347 and pickup CTI measurement obsid 62100 at 1407 on downwards leg towards perigee. ORBITAL EVENTS: 2000:089:14:10:06.360 89 EAPOGEE ORBIT APOGEE 2000:090:21:54:37.898 89 EPERIGEE ORBIT PERIGEE 2000:092:05:37:28.131 90 EAPOGEE ORBIT APOGEE 2000:093:13:21:26.170 90 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift LOS 090:1230 Chandra Status at last pass was nominal(note 1) 944 AOS DSS-24 (Goldstone) 090:1300 944 Chandra status at AOS was nominal (note 2) Maneuver to new attitude for perigee passage 090:1402 62100 SIM to HRC-S LOS DSS-24 090:1430 End of shift 090:1600 NOTES/ISSUES/PROBLEMS --------------------- 1) Chandra status at last pass: UTC 2000:090:03:14:01 (Thu Mar 30) f_ACE 3.04e+01 F_ACE 2.56e+07 R km 126749D OBT 2000:090:03:13:24 CTUVCDU 13845887 OBC s/w NRML FMT2_NORM CPEstat OBT 70773204.32 ONLVCDU 13845872 OBC Errs 0 OBSID 944 EPState SUN SIM TTpos 92903 HETG Angle 80.6 PCADMODE NPNT RA 266.797 Bus V 30.71 SIM FApos -535 LETG Angle 79.1 PCONTROL NPNT Dec -28.467 Bus I 28.74 AOFSTAR GUID Roll 87.616 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -3.51 Yaw Rate -0.21 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 7.02 Pitch Rate 0.08 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.07 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.39 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -12.82 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 50.89 SA Resolv 102.03 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 13.72 HRMA power 76.90 -Y SA Amps 14.88 EPHIN Geom LARG OBA power 57.60 +Y SA Temp 113.28 E1300 1 -Y SA Temp 112.97 P4GM 0 Roll Mom. 14.474 SCS 128 P41GM 0 Pitch Mom. 3.120 SCS 129 UpL Cmd Acc 55472 A-Leak 0.4400 Yaw Mom. -4.654 SCS 130 Cmd Rej A 120 B-Leak 0.0680 Expected RA, Dec, Roll (degrees): 266.79480, -28.46644, 87.61526 2) Chandra's state at 090:1300 was: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 266.794787 deg 266.79480 DEC = -28.466439 deg -28.46644 ROLL = 87.615272 deg 87.61526 Format = 2 2 OBSID = 944 944 SIM FA = -535 -536 SIM TSC = 92903 92904 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 = 0.4440 B-leak = 0.0720 ACE Proton Flux = 20 (2 hr avg in 130-214 keV proton channel) Fluence (130-214KeV) = 1.4E+5 LT 3.6E+8 Radiation Level OK EPHIN Geom = LARG E1300 = 6 LT 1318.52 (RADMON P4GM = 0 LT 118.08 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 = 3750 ACIS FP Temp = -119.7 (at 1310) Cold Radiator = -127.9 DEA Pwr = 50.8 DPA Pwr = 40.9 3) Notes from 9:00am meeting: Operations yesterday (Darrel Wicker): - 3 supports last 24 hrs, 4 dumps, one bad this AM on DSS-24. - Uplinked another load segment, good thru 93:1655 Mission Planning (Dan/Kevin/Ken/Bill Davis): - Next APR02 load review to be held today at 4pm. - Review of test load for OFLS release 8.1a held yesterday. Load fixed roll vs. target offset problem. Will do another test load with HRC observations in it before 8.1a is certified good. - Discussions held with DSN about changed timing delays for use in clock correlations. Trying to finalize these parameters. Spacecraft Engineering(Jeff/Chris/Wallace/Rino): - All is well. SOT (Bill Podgorski): - Radiation levels well below limits. - Peter Ford will brief ACIS squeegee mode testing status today in FDB meeting. - MP will look for DSN time for test of squeegee mode. ASCDSOPS(Joy Nichols): - Three quick looks today (see below). GOT (Chris Eagan): - DSS-24 support yesterday missing several hundred VCDU's in IDR file (and it wasn't on a Sunday!). Meetings/etc (Leon McKendrick): - Engineering meeting at 1pm. - FDB at 2pm. - Mission Planning at 3pm. - Load review at 4pm. 4) Quick Look data review: OBSID Target Time Comment ----- ------ -------------- ------- 00715 GX 349+2 2000:087:18:13 ACIS-S/HETG. Looks good, can see strong 0th order image and strong lines 00614 FK COM/HD 117555 2000:087:04:30 ACIS-S/HETG Looks ok. 00640 ZETA PUP 2000:088:13:23 ACIS-S/HETG. Looks good. 5) Typical CTI measurements thru perigee: DAY:HRMN Event Del T 090:1407 Start CTI 090:1641 Stop CTI 2:34 090:2154 Perigee 5:13 091:0228 Start CTI 4:34 091:0512 Stop CTI 2:44