May_08_2003_M1386.txt Shift M1386 Start at 2003:128 19:30:00 UTC = 2003 May 08 3:30 pm EDT End 2003 May 08 6:30 pm EDT SOT shift report 2003-05-08 M1386 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/May_08_2003_M1386.txt SOT Lead Robert Cameron SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running MAY0503C load. Load stopped at 128:2008 due to high EPHIN P4GM and E1300 rates. See Note (2) below for more details. CAP 843 was used to cool the ACA CCD from -10C to -11C. Seq # ObsID It Target start time SI Grat RA dec roll ----------------------------------------------------------------------------------------------------- 700742 04063 0 PDS 456 2003:127:03:49:05.915 145.5 ACIS-S HETG 262.1024 -14.2877 98.81 400258 03505 0 SCO X-1 2003:128:20:42:05.915 14.8 ACIS-S HETG 244.9982 -15.6575 97.21 ---- 60747 CAL-ER (60747) 2003:129:01:27:39.603 8.3 -- -- 283.2000 -17.6000 98.95 ---- 60746 CAL-ER (60746) 2003:129:04:16:03.813 0.0 -- -- 331.4000 29.6000 98.02 ---- 60745 CAL-ER (60745) 2003:129:04:56:49.754 3.6 -- -- 99.8000 43.5000 282.41 ---- 60744 CAL-ER (60744) 2003:129:06:37:26.106 0.0 -- -- 331.4000 29.6000 98.08 ---- 60743 CAL-ER (60743) 2003:129:11:01:28.341 20.8 -- -- 283.2000 -17.6000 99.02 400282 03795 1 MXB 1659-298 2003:129:17:16:08.341 27.0 ACIS-S NONE 255.5387 -29.9637 71.46 500388 03909 0 G11.2-0.3 2003:130:01:14:08.341 15.0 ACIS-S NONE 272.8904 -19.4360 95.24 ORBITAL EVENTS: 2003:128:01:25:44.967 518 EAPOGEE ORBIT APOGEE 2003:129:09:10:33.549 518 EPERIGEE ORBIT PERIGEE 2003:130:16:53:52.813 519 EAPOGEE ORBIT APOGEE 2003:132:00:37:54.006 519 EPERIGEE ORBIT PERIGEE 2003:133:08:21:30.091 520 EAPOGEE ORBIT APOGEE 2003:134:16:04:43.547 520 EPERIGEE ORBIT PERIGEE 2003:135:23:48:26.259 521 EAPOGEE ORBIT APOGEE 2003:137:07:32:18.575 521 EPERIGEE ORBIT PERIGEE 2003:138:15:15:27.946 522 EAPOGEE ORBIT APOGEE 2003:139:23:00:09.669 522 EPERIGEE ORBIT PERIGEE 2003:141:06:43:27.339 523 EAPOGEE ORBIT APOGEE 2003:142:14:27:27.945 523 EPERIGEE ORBIT PERIGEE 2003:143:22:11:27.243 524 EAPOGEE ORBIT APOGEE 2003:145:05:55:06.043 524 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 128:1930 AOS DSS-46 (Canberra 26m) 128:2010 04063 LOS DSS-46 (Canberra 26m) 128:2210 End of shift 128:2230 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at 128:2210, after the RADMON trip: UTC 2003:128:22:10:03 (May 8) f_ACE 5.35e+02 F_CRM 3.78e+08 Kp 5.3 R km 87716D OBT 2003:128:22:09:28 CTUVCDU 10587519 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 168818968.08 ONLVCDU 10587504 OBC Errs 0 OBSID 4063 EPState SUN SIM TTpos -99616 HETG Angle 6.34 PCADMODE NPNT RA 262.101 Bus V 30.08 SIM FApos -467 LETG Angle 77.96 PCONTROL NPNT Dec -14.286 Bus I 30.26 AOFSTAR GUID Roll 98.807 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc NNNTTTTT Dith Yang 6.84 Yaw Rate -0.53 HRC-S HV OFF ACA CCD Temp -11.2 Dith Zang -3.07 Pitch Rate -0.06 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.11 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa 17.60 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 49.71 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 50.89 SA Resolv 143.21 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 14.68 RadMon DISA HRMA power 56.70 SCS 128 INAC -Y SA Amps 15.07 EPHIN Geom SMAL OBA power 131.80 SCS 129 INAC +Y SA Temp 110.82 E150 32195.1 SCS 130 INAC -Y SA Temp 112.35 E300 145.5 Roll Mom. 3.277 SCS 107 DISA E1300 0.4 Pitch Mom. -3.118 UpL Cmd Acc 37779 EPH A-Leak 1.0200 P4GM 31.4 Yaw Mom. -5.695 Cmd Rej A 171 EPH B-Leak 0.2240 P41GM 0.1 Gyro 1 Curr 1 151.20 Gyro 1 Curr 2 100.80 Gyro 2 Curr 1 9.60 Gyro 2 Curr 2 9.60 Current Data: UTC 2003:128:22:10:01 (May 8) f_ACE 5.35e+02 F_CRM 3.78e+08 Kp 5.3 R km 87793D Currently scheduled FPSI, OTG : HRC-S HETG Estimated Kp : 5.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 5.35e+02 GOES-10 P2 flux, in RADMON P4GM units : 0.00 GOES-12 P2 flux, in RADMON P4GM units : 0.00 GOES-10 P5 flux, in RADMON P41GM units : 0.01 GOES-12 P5 flux, in RADMON P41GM units : 0.01 Orbit Start Time : 2003:126:17:44:01 Geocentric Distance (km), Orbit Leg : 87868 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 1.80504000000e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.60116479200e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 3.77887507200e+08 2) Radiation The ACE radiation environment is moderate and variable. The GOES proton radiation environment is quiet. ACE 2 hr fluence is 5.8e6 vs. threshold 3.6e8. CRM-based orbital fluence is 3.8e8 vs. threshold 3.0e9. Chandra is in the magnetosphere. SCS 107 ran on Chandra at 2003:128:20:08, due to a RADMON trip, due to high EPHIN rates on E1300 and P4GM. SCS 107 ran nominally and the instruments are safed correctly. The radiation trip seems to be due to another early radiation belt event. The SCS107 trip happened 13 hours and 1 minute before perigee. The trip occurred at the end of obsid 4063, shortly before the start of the ACIS Sco X-1 observation (obsid 3505). The FOT MP has started replanning, to resume observations at the exit of the radiation belts tomorrow morning. The radiation pad time at the next radiation entry will be extended to have at least 13 hours between RADMON disable and perigee. This will be accomplished by shaving time off the longer observations in the next orbit, while maintaining at least 90% of the requested time for each observation. It is expected that the replanned products for the remainder of MAY0503 will be out for review by about 8pm EDT tonight, with a load review telecon at 10pm EDT tonight. The comm period for upload starts at 129:13:00 UT (9am EDT tomorrow). The MAY1203 load will be rebuilt to provide extra radiation entry pad times for each orbit, to provide at least 13 hours between RADMON disable and perigee. A similar pad time will be used in the MAY1903 load. 3) Quick Look data review (OK unless noted): Seq # ObsID Constr. Target Start Time SI Grat Comment --------------------------------------------------------------------------------------- There were no new quick look datasets in this shift. 4) CAP 843 was run, to lower the ACA CCD temperature from -10C to -11C. The CCD temperature change was observed in realtime, over a timescale of about 20 minutes. 5) The IRU1 gyro1 current was observed to spike at more than 190mA on several occasions during the comm. An additional comm period has been requested tomorrow to continue monitoring the gyro currents.