ACIS SOT Shift report L2984 Sep 22, 2007 22:50 EDT,2007:266:02:50 GMT COMM Period: = 2007 Sep 22 10:50 pm EDT End = 2007 Sep 22 11:50 pm EDT See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html or /proj/web-cxc/htdocs/acis/SOT_reports/Sep_22_2007_L2984_acis.txt ACIS Personnel: Joseph DePasquale, Paul Plucinsky, Nancy Adams-Wolk PLAN: ---- We will evaluate ACIS thermal telemetry to verify that the side B detector housing heater was turned off. The commands to do these actions are contained in the SEP2407 command load, and should have turned the heater off at 265:20:50 GMT. If the temperature of the camera body has reached -69.8 C, we will execute CAP 1042. SUMMARY: ------- At 2255 EDT, the ACIS team was able to verify that the heater had indeed been turned off in the load and that the camera body temperature had cooled to -64.8 C on the B side, and -67.3 C on the A side. The side B camera body temp cooled to -67.3 C by the end of the COM but was still below the threshold of -69.8 C for CAP 1042. The telemetry seen was: 1DAHTBEN=EN 1DAHTBON=OFF 1DAHHBVO= 28.98 (value of the mean over 10 samples) 1DAHBVO= 0.00 (value of the mean over 10 samples) 1DAHBCU= 0.00 (value of the mean over 10 samples) 1CBBT= -64.8~-67.3 (value of the mean over 10 samples) 1CBAT= -67.3 (value of the mean over 10 samples) Snapshot at LOS: UTC 2007:266:03:52:05 (Sep23) f_ACE 4.87e+01 F_CRM 7.63e+08 Kp 3.0 R km 106843A OBT 2007:266:03:49:07 CTUVCDU 12594943 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 306906547.03 ONLVCDU 12594928 OBC Errs 0 OBSID 9593 EPState SUN SIM TTpos 92903 HETG Angle 79.09 PCADMODE NPNT RA 53.121 Bus V 29.93 SIM FApos -535 LETG Angle 77.21 PCONTROL NPNT Dec -27.830 Bus I 24.43 AOFSTAR GUID Roll 72.502 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -7.38 Yaw Rate 0.07 HRC-S HV ON ACA CCD Temp -19.6 Dith Zang -7.98 Pitch Rate -0.10 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate -0.14 EVT RT 0 AOACSTAT OK FSS SunBeta SUN SHLD RT 20 FSS Alfa -1.85 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -32.17 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 53.76 SA Resolv 121.97 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -84.4 OBA Trng Fault NFLT +Y SA Amps 11.98 RadMon ENAB HRMA power 9.60 SCS 128 INAC -Y SA Amps 12.18 EPHIN Geom SMAL OBA power 78.30 SCS 129 ACT +Y SA Temp 113.89 E150 61.0 SCS 130 ACT -Y SA Temp 114.51 E300 5.8 Roll Mom. 11.947 SCS 107 INAC E1300 9.4 Pitch Mom. -7.506 UpL Cmd Acc 3195 EPH A-Leak 1.0200 P4GM 0.0 Yaw Mom. -8.819 Cmd Rej A 211 EPH B-Leak 0.0000 P41GM 0.0 EPH temp 107.86 Gyro 2 Curr 1 103.20 Roll Bias -0.9808 EPH 27V 10.49 M Unload MON Gyro 2 Curr 2 98.40 Pitch Bias -2.0475 TSC Move STOP Prop. line 03 99.42 Yaw Bias -1.1823 CTX A PWR 36.43 FA Move STOP Prop. line 04 67.93 CTX A Volts 3.52 OTG Move DISA Explanation Current Data: UTC 2007:266:03:58:01 (Sep23) f_ACE 4.87e+01 F_CRM 7.88e+08 Kp 3.3 R km 107121A Currently scheduled FPSI, OTG : ACIS-I NONE Estimated Kp : 3.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.74e+01 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 : 0.02 GOES-12 P5 flux, in RADMON P41GM units : 0.03 Orbit Start Time : 2007:265:12:19:00 Geocentric Distance (km), Orbit Leg : 106899 A CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 8.25599000000e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 8.25599000000e+04 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.05529939900e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 7.88227809000e+08