Feb_21_2000_L213.txt Shift L213 Start at 2000:052:11:30:00 GMT = 2000 Feb 21 6:30am EST End 2000 Feb 21 10:00am EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Feb_21_2000_L213.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running new load FEB20D, uplinked yesterday. Verify proper operation after saft mode recovery over weekend. Orbital events this week: WATCH ACE CAREFULLY (See note 3). SOT COVERAGE: DAY BOT EOT SOT Lead 052 1100 1200 1400 1415 DSS-24 WAP 052 2035 2135 2245 2300 DSS-24 RAC 053 0500 0600 0700 0715 DSS-54 - 053 1250 1350 1445 1500 DSS-24 WAP ORBITAL EVENTS: 2000:051:05:59:57.865 74 EPERIGEE ORBIT PERIGEE 2000:052:13:42:50.521 75 EAPOGEE ORBIT APOGEE 2000:053:21:27:19.841 75 EPERIGEE ORBIT PERIGEE 2000:055:05:10:25.703 76 EAPOGEE ORBIT APOGEE 2000:056:12:54:02.057 76 EPERIGEE ORBIT PERIGEE 2000:057:20:37:50.176 77 EAPOGEE ORBIT APOGEE 2000:059:04:21:33.402 77 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 052:1130 364 State at last pass was nominal (see note 1) AOS DSS-24 (Goldstone) 052:1200 Chandra status AOS was nominal (see note 2) LOS DSS-24 052:1400 End of shift 052:1500 NOTES/ISSUES/PROBLEMS --------------------- 1) State at last COMM: UTC 2000:052:03:45:01 (Mon Feb 21) f_ACE 1.83e+04 F_ACE 5.05e+08 R km 134451A OBT 2000:052:03:44:19 CTUVCDU 1040639 OBC s/w NRML FMT1_NORM CPEstat NORM OBT 67491859.43 ONLVCDU 1040624 OBC Errs 0 OBSID 364 EPState SUN SIM TTpos -50505 HETG Angle 80.6 PCADMODE NPNT RA 128.798 Bus V 30.40 SIM FApos -715 LETG Angle 79.1 PCONTROL NPNT Dec -45.178 Bus I 30.26 AOFSTAR GUID Roll 331.516 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang -12.68 Yaw Rate 0.01 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang -7.90 Pitch Rate 0.45 OBSMode OBSV ACA Int Time 1.698 Roll Rate 0.06 Door OP ACT AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.44 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -29.87 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 50.89 SA Resolv 119.72 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 14.30 HRMA power 104.90 -Y SA Amps 15.66 EPHIN Geom LARG OBA power 116.90 +Y SA Temp 116.22 E1300 1 -Y SA Temp 116.95 P4GM 16 Roll Mom. -1.129 SCS 128 P41GM 0 Pitch Mom. -7.902 SCS 129 UpL Cmd Acc 3893 A-Leak 0.4640 Yaw Mom. -3.997 SCS 130 Cmd Rej A 187 B-Leak 0.0720 Expected RA, Dec, Roll (degrees): 128.80153, -45.18113, 331.51802 2) Chandra's state at 052:1200 was: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 128.801544 deg 128.80153 DEC = -45.181140 deg -45.18113 ROLL = 331.518016 deg 331.51802 Format = 1 1 OBSID = 62187 62187 SIM FA = 304 364 SIM TSC = -50505 -50505 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 = 0.4600 B-leak = 0.0720 ACE 2 HR Proton Fluence (130-214KeV) = 2.5E+7 LT 3.6E+8 EPHIN Geom = LARG E1300 = 3 LT 1318.52 (RADMON P4GM = 3 LT 118.08 Triggers) P41GM = 1 LT 100.00 HRC SP PS = OFF IM PS = ON IM Top Step = 77 IM Bot Step = 89 Shield 1 HV = OFF Shield 2 HV = ON, Step 8 Valid Event Rate 1 = 70 Valid Event Rate 2 = 78 Shield Event Rates = 3900 ACIS FP Temp = -119.9 DEA Pwr = 47.8 DPA Pwr = 41.6 3) Expected ACE orbital fluence while ACIS is in focal plane: ACIS IN: 052:1555 ACIS OUT: 053:1230 Time in: 20 hours and 35 minutes == 74100 Average Flux: 3E+3 Orbital Fluence: 2.22E+8 Orbital Fluence trigger level: 1E+9 WE WILL APPROACH THE ORBITAL TRIGGER LEVEL DURING THE NEXT SERIES OF ACIS OBSERVATIONS IF ACE PROTON RATES DO NOT GO DOWN (within 1 order of magnit 4) Notes from 9:00am meeting: Safe Mode Recap - Leon McKendrick Operations (Darrel Wicker): - 8 supports over weekend, 9 dumps - All 3 segments of FEB20D are onboard - DSN-34 problem delayed commanding for 30 min Friday - Last several days we have had problems with Madrid contacts due to the loss of the "big pipe" data connection from JPL to Madrid. The "little pipe has lower bandwidth and consequently we get dropouts during real time contacts. Dumps are OK, but arrive later than usual (12 hrs lag). - Bruce Twambly to be here last week in Feb/first week in March. Should get all GRETA items to him. Mission Planning (Ken Gage): - FEB27 load products to be out today for review. SOT (Bill Podgorski): - Discussed ACE data and need for close attention - Mentioned HRC wobble problem and boresight drift problem - Discussed GRETA update on Porter Exchange GRETA workstation (need to do this before Bruce leaves) - TST room is HOT