ACIS SOT Shift report L3068 Dec 13, 2007 21:45 EST,2007:348:02:45 GMT COMM Period: = 2007 Dec 13 09:45 pm EST End = 2007 Dec 13 pm EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html or /proj/web-cxc/htdocs/acis/SOT_reports/Dec_14_2007_L3068_acis.txt ACIS Personnel: Royce Beuhler, Nancy Adams-Wolk,Joseph DePasquale, Paul Plucinsky PLAN: ---- We will execute CAP 1055 to restart the DPA side B and warmboot the ACIS BEP. Summary of anomaly: ----------------- At the 347:2020-2120 pass the ACIS Ops team noticed that side B of the DPA was off. The DPA side B input current and supply voltage were zero but the input voltage was 28.8 V. The DPA side B was still enabled but off. In addition, the ACIS BEP processor had executed a watchdog reboot and had reverted to the EEPROM version of the flight SW. Upon inspection of the dump data, it was seen that the DPA side B turned off at 18:24 during the ascending leg CTI measurement. The BEP processor rebooted soon after that. This event appears similar to the two previous autonomous power downs of side A of the DPA presumably caused by a spurious command from the SIM RCTU. The first observation out of the belts OBSID 9777 was executed with only 2 of the 5 requested CCDs on since 3 of the requested CCDs were to be powered by side B of the DPA. OBSID 9777 will most likely have to be redone. The plan is to execute a recovery at the 347:0245 pass before the next science observation (OBSID 9233) begins. The recovery plan includes stopping the current science run, powering on side B of the DPA, and warm booting the BEP to restore version 31 of the flight SW. SUMMARY: ------- at 02:54, we started the execution of CAP 1055 with SOP_61021_STANDBY. executed the commands: saw the stop sciences at stop science 02:59:06 stop science 02:59:12 WSPOW00000 02:59:18 RS_00000001 02:59:35 end of SOP_61021_STANDBY at 03:04:59 -------------------- Start SOP_61037_DPA_ON at 03:05:10 completed at 03:09:43 Note: expected error when executing the enable twice... ------------------- Start SOP_61070_WARMBOOT at 03:10:15 Warmboot at 02:14:04 verified and completed at 03:15:10 Snapshot at AOS: UTC 2007:348:02:51:09 (Dec14) f_ACE 1.78e+01 F_CRM 4.80e+07 Kp 1.7 R km 106210A OBT 2007:348:02:50:37 CTUVCDU 6674815 OBC s/w NRML FMT2_EPS CPEstat NORM OBT 313987837.77 ONLVCDU 6674800 OBC Errs 0 OBSID 9777 EPState SUN SIM TTpos 92903 HETG Angle 79.09 PCADMODE NPNT RA 215.056 Bus V 29.30 SIM FApos -535 LETG Angle 77.21 PCONTROL NPNT Dec 52.981 Bus I 27.98 AOFSTAR GUID Roll 40.007 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -7.97 Yaw Rate 0.41 HRC-S HV ON ACA CCD Temp -19.6 Dith Zang 7.68 Pitch Rate 0.06 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate -0.13 EVT RT 0 AOACSTAT OK FSS SunBeta SUN SHLD RT 21 FSS Alfa 1.04 Batt 1 SOC 100.00% Avg HRMA Temp 70.63 FSS Beta 3.77 Batt 2 SOC 100.00% ACIS Stat7-0 60 Avg OBA Temp 54.62 SA Resolv 85.96 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 13.53 RadMon ENAB HRMA power 13.60 SCS 128 ACT -Y SA Amps 13.91 EPHIN Geom SMAL OBA power 70.20 SCS 129 ACT +Y SA Temp 117.68 E150 50.3 SCS 130 ACT -Y SA Temp 118.05 E300 5.8 Roll Mom. 9.437 SCS 107 INAC E1300 7.1 Pitch Mom. 1.100 UpL Cmd Acc 46391 EPH A-Leak 1.0200 P4GM 0.0 Yaw Mom. 9.056 Cmd Rej A 97 EPH B-Leak 0.0000 P41GM 0.0 EPH temp 109.34 Gyro 2 Curr 1 103.20 Roll Bias -0.9823 EPH 27I 7.74 M Unload MON Gyro 2 Curr 2 105.60 Pitch Bias -2.0438 TSC Move STOP Prop. line 03 105.75 Yaw Bias -1.1722 CTX B PWR 36.69 FA Move STOP Prop. line 04 78.58 CTX B Volts 3.54 OTG Move DISA snapshot at the end of CAP: UTC 2007:348:03:18:07 (Dec14) f_ACE 1.99e+01 F_CRM 4.83e+07 Kp 2.0 R km 107735A OBT 2007:348:03:17:41 CTUVCDU 6681124 OBC s/w NRML FMT2_EPS CPEstat NORM OBT 313989461.88 ONLVCDU 6681112 OBC Errs 1 OBSID 9777 EPState SUN SIM TTpos 92903 HETG Angle 79.09 PCADMODE NPNT RA 215.057 Bus V 29.46 SIM FApos -535 LETG Angle 77.21 PCONTROL NPNT Dec 52.985 Bus I 25.71 AOFSTAR GUID Roll 40.006 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 5.55 Yaw Rate 0.24 HRC-S HV ON ACA CCD Temp -19.6 Dith Zang -3.75 Pitch Rate -0.02 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate 0.02 EVT RT 0 AOACSTAT OK FSS SunBeta SUN SHLD RT 21 FSS Alfa 1.05 Batt 1 SOC 100.00% Avg HRMA Temp 70.63 FSS Beta 3.75 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 54.70 SA Resolv 85.96 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 12.56 RadMon ENAB HRMA power 23.20 SCS 128 ACT -Y SA Amps 12.95 EPHIN Geom SMAL OBA power 43.20 SCS 129 ACT +Y SA Temp 117.68 E150 62.5 SCS 130 ACT -Y SA Temp 118.05 E300 4.9 Roll Mom. 9.264 SCS 107 INAC E1300 7.1 Pitch Mom. 0.977 UpL Cmd Acc 46473 EPH A-Leak 1.0200 P4GM 0.0 Yaw Mom. 9.268 Cmd Rej A 115 EPH B-Leak 0.0000 P41GM 0.0 EPH temp 110.83 Gyro 2 Curr 1 103.20 Roll Bias -0.9826 EPH 27V 9.52 M Unload MON Gyro 2 Curr 2 105.60 Pitch Bias -2.0438 TSC Move STOP Prop. line 03 107.02 Yaw Bias -1.1722 CTX B PWR 36.69 FA Move STOP Prop. line 04 80.62 CTX B Volts 3.54 OTG Move DISA