Apr_04_2001_M622.txt Shift M622 Start at 2001:094:18:30:00 GMT = 2001 Apr 4 2:30pm EDT End 2001 Apr 4 5:30pm EDT SOT shift report 2001-04-04 M622 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_04_2001_M622.txt SOT Lead Robert Cameron SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Loads not currently running due to yesterday's RADMON trip. Uplink Segment 1 of APR0501 to perform maneuvers to meet ACA Earth Avoidance requirements. Planned Activity in APR0501 load (Case 2 from yesterday): Seq # ObsID It Target start time SI Grat RA dec roll slew ---------------------------------------------------------------------------------------------------------- ---- T_E29 CAL-ER 2001:094:22:20:00.000 1.0 -- -- 278.0000 28.0000 98.11 0.01 ---- GG_29 00 CAL-ER 2001:095:02:34:30.000 3.6 -- -- 181.5000 23.8000 204.04 138.66 ---- T_X30 00 CAL-ER 2001:095:06:45:44.965 10.0 -- -- 170.5000 23.4000 221.18 16.22 800128 01660 00 V 1121+2327 2001:095:10:00:24.965 72.1 ACIS-I NONE 170.2045 23.4363 221.64 0.44 500177 02000 00 CRAB NEBULA 2001:096:06:35:28.982 22.5 ACIS-S NONE 83.6141 22.0331 272.06 79.05 ORBITAL EVENTS: 2001:095:03:19:46.149 EPERIGEE 229 ORBIT PERIGEE 2001:096:11:02:40.332 EAPOGEE 230 ORBIT APOGEE 2001:097:18:46:27.383 EPERIGEE 230 ORBIT PERIGEE 2001:099:02:29:47.513 EAPOGEE 231 ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 094:1830 AOS DSS-34 (Canberra 34m) 094:1900 End of shift 094:2130 LOS DSS-34 (Canberra 34m) 094:2200 NOTES/ISSUES/PROBLEMS --------------------- 1) Chandra snapshot: UTC 2001:094:19:19:15 (Apr 4) f_ACE 4.86e+04 F_ACE 9.73e+07 Kp 5.3 R km 78449D OBT 2001:094:19:18:45 CTUVCDU 4607359 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 102799125.37 ONLVCDU 4607344 OBC Errs 0 OBSID 1578 EPState SUN SIM TTpos -99615 HETG Angle 79.84 PCADMODE NPNT RA 181.776 Bus V 30.24 SIM FApos -467 LETG Angle 78.34 PCONTROL NPNT Dec 43.083 Bus I 32.03 AOFSTAR GUID Roll 193.859 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc NNNTTTTT Dith Yang 3.72 Yaw Rate 0.06 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang -3.77 Pitch Rate -0.12 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.08 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa 1.55 Batt 1 SOC 100.00% Avg HRMA Temp 70.58 FSS Beta -40.07 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 50.89 SA Resolv 130.98 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 15.26 RadMon DISA HRMA power 114.50 SCS 128 ACT -Y SA Amps 16.44 EPHIN Geom SMAL OBA power 126.50 SCS 129 INAC +Y SA Temp 113.89 E150 60097.6 SCS 130 INAC -Y SA Temp 114.20 E300 1160.3 Roll Mom. 6.102 SCS 107 DISA E1300 37.5 Pitch Mom. -11.917 UpL Cmd Acc 56736 EPH A-Leak 0.6960 P4GM 394.3 Yaw Mom. -4.932 Cmd Rej A 207 EPH B-Leak 0.1280 P41GM 1.7 Current Data: UTC 2001:094:19:19:15 (Apr 4) f_ACE 4.86e+04 F_ACE 9.73e+07 Kp 5.3 R km 78449D Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 5.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 4.86e+04 Orbit Start Time : 2001:092:11:54:00 Geocentric Distance (km), Orbit Leg : 78551 D CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 1.05574140000e+05 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.19400740646e+10 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.15730331030e+08 2) Quick look data: Seq # ObsID It Target start time SI Grat Comment ---------------------------------------------------------------------------------------------------------- There are no new quick look data in this shift. 3) Radiation Radiation remains high. E1300 and P4GM rates exceed RadMon limits. ACE proton rates have been trending down for several hours. GOES proton rates were perturbed today by the passage of a shock in the IPM, but have a slow downward trend. There was a radiation telecon at 2:30 pm EDT. It was decided that radiation is too high to resume the full APR0501 science mission now. Only uplink Segment 1 of APR0501 to perform maneuvers to meet ACA Earth Avoidance requirements during perigee. There will be another telecon at 10 pm EDT, to assess radiation levels (based on ACE and GOES data only, since EPHIN data will be dominated by trapped radiation during perigee), to decide to proceed with the APR0501 science schedule or not.