Jan_30_2001_L558.txt Shift L558 Start at 2001:030:12:30:00 GMT = 2001 Jan 30 7:30am EST End 2001 Jan 30 11:30am EST SOT shift report 2001-01-30 L558 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jan_30_2001_L558.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running JAN2901 on descending leg. Observing 'NGC 2681' with ACIS-S (obsid 2060). Safe for rad belt passage at about 031:0745 UT. Radiation levels high with proton rates 20,000 -25,000. EPHIN P4GM was down to 25-30 at last COMM (030:0500UT). Radiation telecon at 9:30EST to assess prior to 10am EST COMM pass Pass added from 030:2120 - 030:2230 to provide opportunity to take action should radiation increase. Seq # ObsID It Target start time SI Grat RA dec roll slew ---------------------------------------------------------------------------------------------------------- 600194 02060 00 NGC 2681 2001:030:00:56:00.000 82.0 ACIS-S NONE 133.4094 51.3292 178.70 22.95 500178 02001 00 CRAB NEBULA 2001:031:00:15:27.831 24.1 ACIS-S NONE 83.6135 22.0326 273.76 77.84 ---- T_E05 CAL-ER 2001:031:07:45:09.741 7.6 -- -- 355.1300 38.5800 317.29 -0.00 ---- T_X06 CAL-ER 2001:031:17:54:28.749 20.8 -- -- 355.1300 38.5800 320.44 -0.00 600122 01565 00 M31 - SOUTH 2 2001:031:23:57:15.577 1.1 HRC-I NONE 10.0808 40.6763 306.27 12.56 ORBITAL EVENTS: 2001:030:08:22:26.464 205 EAPOGEE ORBIT APOGEE 2001:031:16:06:19.913 205 EPERIGEE ORBIT PERIGEE 2001:032:23:50:46.153 206 EAPOGEE ORBIT APOGEE 2001:034:07:35:11.162 206 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 030:1230 AOS DSS-24 (Goldstone) 030:1500 Status at start shift was nominal 030:1525 2060 (see note 1) Swap to SSR-A per CAP 693 030:1555 (see note 5) LOS DSS-24 030:1603 End of shift 030:1630 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at 030:1525: UTC 2001:030:15:25:02 (Jan30) f_ACE 2.72e+04 F_ACE 9.93e+08 Kp 2.3 R km 136717D OBT 2001:030:15:24:26 CTUVCDU 16527999 OBC s/w NRML FMT2_SSR CPEstat NORM OBT 97255466.14 ONLVCDU 16527984 OBC Errs 0 OBSID 2060 EPState SUN SIM TTpos 75624 HETG Angle 79.84 PCADMODE NPNT RA 133.409 Bus V 29.77 SIM FApos -467 LETG Angle 78.34 PCONTROL NPNT Dec 51.331 Bus I 31.02 AOFSTAR GUID Roll 178.699 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 1.28 Yaw Rate -0.14 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 5.78 Pitch Rate -0.01 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.09 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -17.58 Batt 1 SOC 100.00% Avg HRMA Temp 70.56 FSS Beta -49.57 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 50.73 SA Resolv 146.63 Batt 3 SOC 100.00% Cold Rad -125.5 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 15.07 RadMon ENAB HRMA power 88.20 SCS 128 ACT -Y SA Amps 15.66 EPHIN Geom LARG OBA power 140.70 SCS 129 ACT +Y SA Temp 118.05 E150 45.2 SCS 130 ACT -Y SA Temp 118.78 E300 1.1 Roll Mom. 0.492 SCS 107 INAC E1300 0.0 Pitch Mom. -1.231 UpL Cmd Acc 46250 EPH A-Leak 0.3360 P4GM 7.1 Yaw Mom. 3.794 Cmd Rej A 233 EPH B-Leak 0.0640 P41GM 0.0 Current Data: UTC 2001:030:15:25:02 (Jan30) f_ACE 2.72e+04 F_ACE 9.93e+08 Kp 2.3 R km 136717D Currently scheduled FPSI, OTG : ACIS-S NONE Costello Kp : 2.00 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.72e+04 Orbit Start Time : 2001:029:00:44:00 Geocentric Distance (km), Orbit Leg : 136740 D CRM Region : 1 (Solar_Wind) External Proton Flux (p/cm^2-s-sr-MeV) : 2.72000000000e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 2.72000000000e+04 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.93923853311e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.06397489746e+09 HRC SP PS = ON Steps 43/54 IM PS = OFF Shield 1 HV = OFF Shield 2 HV = OFF Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 0 ACIS FP Temp = -119.2 DEA Pwr = 50.5 DPA Pwr = 42.1 Science State = Science Active 2) Radiation: Telecon held at 9:30EST Decided to take no action in 10amEST pass EPHIN P4GM is at 8 now (10:15amEST) Added pass from 030:2120 - 030:2230 to give us another chance to intervene if necessary Fluence now is about 1x10**9 will add another 1.7x10**9 at 30,000 flux giving 2.7x10**9 orbital dose this orbit. Telecon at 4pmEST (prior to pass starting 4:40pmEST) Number is 405-244-5060 passcode 1165# Rob Cameron is SOT Lead this PM 3) Notes from 9:00am meeting: Operations (Darrell): - 3 supports last 24 hrs, 1 34m, 2 26m - One of the 3 supports was added (DSS-16 yesterday AM) to check EPHIN rates. - Problem with 030:0450 - 030:0550 DSS-66 support, hardware failure at site caused early termination. No dump received. Mission Planning (Dan): - FEB05B products out for load review today at 2pm. S/C Engineering(Jeff): - Rino looking at rise in EPHIN temperature. SOT(Bill): - ACE radiation levels high (25-30K) - EPHIN P4GM down to 25-30 last pass - Telecon at 9:30 to go over situation DSOPS(Jen) - Several quick looks (see below) GOT(Ken): - All is well. 4) Quick look data: Seq # ObsID It Target start time SI Grat Comment ---------------------------------------------------------------------------------------------------------- 800137 01669 00 A 478 2001:027:03:45:09.758 43.0 ACIS-S NONE 700388 02198 00 NGC 7331 2001:027:17:01:08.960 30.0 ACIS-S NONE 800162 02223 00 NGC 741 GROUP 2001:028:02:32:22.141 31.0 ACIS-S NONE 500150 01973 00 1RXSJ0203-2438 2001:028:11:31:11.175 1.0 HRC-S NONE 700390 02339 00 NGC1097 2001:028:12:15:51.175 5.5 ACIS-S NONE 700227 01611 00 NGC1097 2001:028:14:15:31.175 5.5 ACIS-S NONE 700350 02160 00 2MASSJ095504+1705 2001:029:14:22:51.877 4.0 ACIS-I NONE 5) During the 030:1500 pass it was discovered that the playback pointer on the active SSR (SSR-B at the time) had been reset to a point beyond the address to which the data had been dumped. Between 8 and 12 hours of data (exact amount pending added analysis) would have been overwritten and lost if no action were taken. CAP 693 was generated to swap recording to SSR-A and run after the SSR-B dump ended at about 030:1555. Skipped data on SSR-B will be recovered by patching the pointers on SSR-B, then playing back. This should take between a day (min) and a week (cautious max).