May_23_2002_L1036.txt Shift L1036 Start at 2002:143:11:30:00 GMT = 2002 May 23 7:30am EDT End 2002 May 23 10:30am EDT SOT shift report 2002-05-23 L1036 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or May_23_2002_L1036.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Radiation shutdown today: Were running MAY2002C on the ascending leg, observing 'SAGITTARIUS A' with ACIS-I. Radiation levels were high, with a sharp spike at about 143:0900. GOES predictors of EPHIN rates indicated that an SCS107 trip was likely. At the start of the 143:1140 DSS-24 COMM pass we had to turn spacecraft telemetry on. SCS107 had run, at approx 143:0958. SCS107 run was nominal, S/C is nominal. Attitude is good at least thru radiation zone. REPLAN SUMMARY: Two replans to be developed for load restart: Plan A: Uplink tomorrow at 144:1100 pass, start load about 144:1200, continue Sag A observation but with new OBSID Products out this AM, load review this afternoon. GO/NOGO telecon tomorrow (Friday, May24) at 7:00am EDT on 305-503-1818 pin 421 Plan B: If we decide radiation is too high to implement Plan A, then Plan B is to uplink loads tomorrow at 144:1835 pass and start about 144:1935, prior to radzone entry. Start observing after radiation zone exit at 145:1230 with ACIS CTI and then Sag A. Seq # ObsID It Target start time SI Grat RA dec roll ------------------------------------------------------------------------------------------------------- Terminated Observation in MAY2002C: 600280 02943 00 2 SGR A* 2002:142:23:18:38.704 171.2 ACIS-I NONE 266.4284 -29.0305 75.31 ORBITAL EVENTS: 2002:142:16:15:14.218 385 EPERIGEE ORBIT PERIGEE 2002:142:20:03:41.240 386 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2002:143:23:58:55.728 386 EAPOGEE ORBIT APOGEE 2002:145:01:48:30.213 386 EE1RADZ0 ELECTRON1 RADIATION ENTRY0 2002:145:07:42:09.384 386 EPERIGEE ORBIT PERIGEE 2002:145:12:20:30.213 387 XE1RADZ0 ELECTRON1 RADIATION EXIT0 2002:146:15:26:04.168 387 EAPOGEE ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 143:1130 AOS DSS-24 (Goldstone 34m) 143:1140 2943 Status at AOS indicated that SCS107 had run (see note 1) LOS DSS-24 143:1240 End of shift 143:1430 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at AOS: UTC 2002:143:11:48:11 (May23) f_ACE 7.72e+04 F_CRM 1.87e+08 Kp 6.0 R km 121107A OBT 2002:143:11:47:31 CTUVCDU 9872255 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 138541651.06 ONLVCDU 9872240 OBC Errs 12 OBSID 2943 EPState SUN SIM TTpos -99616 HETG Angle 79.46 PCADMODE NPNT RA 266.430 Bus V 29.93 SIM FApos -535 LETG Angle 77.96 PCONTROL NPNT Dec -29.030 Bus I 35.33 AOFSTAR GUID Roll 75.307 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc NNNTTTTT Dith Yang 1.14 Yaw Rate 0.19 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 6.04 Pitch Rate 0.06 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.14 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -49.63 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -49.83 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 50.66 SA Resolv 154.44 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 17.23 RadMon DISA HRMA power 97.80 SCS 128 INAC -Y SA Amps 17.82 EPHIN Geom SMAL OBA power 199.40 SCS 129 INAC +Y SA Temp 109.89 E150 3158.5 SCS 130 INAC -Y SA Temp 110.20 E300 38.0 Roll Mom. 5.924 SCS 107 DISA E1300 1.0 Pitch Mom. -0.111 UpL Cmd Acc 62225 EPH A-Leak 0.7640 P4GM 555.6 Yaw Mom. 5.880 Cmd Rej A 89 EPH B-Leak 0.1480 P41GM 0.2 Explanation Current Data: UTC 2002:143:12:23:40 (May23) f_ACE 6.16e+04 F_CRM 1.87e+08 Kp 6.0 R km 122545A Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 6.00 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 6.16e+04 GOES-8 P2 flux, in RADMON P4GM units : 0.58 GOES-10 P2 flux, in RADMON P4GM units : 1.07 GOES-8 P5 flux, in RADMON P41GM units : 0.03 GOES-10 P5 flux, in RADMON P41GM units : 0.03 Orbit Start Time : 2002:142:16:19:01 Geocentric Distance (km), Orbit Leg : 122545 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 2.20864000000e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.44520305100e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.86675513300e+08 HRC IM PS = ON Stp 42/53 SP 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 = -119.9 DEA Pwr = 32.3 DPA Pwr = 11.8 Science State = Science Idle 2) Notes from 9:00am meeting: Operations (Darrel): - 3 supports last 24 hrs, all 34m - 1 LS uplinked - Dumps current - Loads terminated by SCS107 run at 143:0958 Mission Planning (Ken): - Will work replan loads as noted above. - MAY2702 will need rerun for continuity - Working JUN03, trying to avoid a long period near 90 deg sun pitch by bringing forward some lower priority targets. S/C Engineering(Dan/Rino): - All OK on S/C, SCS 107 nominal - ASVT testing of IRU cal today SOT(Bill): - See above notes on radiation DSOPS(Joy): - No quick looks today. GOT(Mike): - All OK Meetings/events: - 9:15am, radiation replan discussion - 1pm, computer migration telecon with contractors - 2pm, FDB - 3pm, MP staff 3) Quick look data: Seq # ObsID It Target start time SI Grat Comment ----------------------------------------------------------------------------------------------------------