SOT/ACIS shift report 2004-01-10 H1633 Start at 2004:011:19:30 GMT = 2004 Jan 10 2:30 pm EST End Jan 10 4:30 pm EST ACIS Shanil Virani PLAN ---- Support radiation GO/NOGO telecon at 3pm EST. Uplink JAN1104B loads and execute CAP#903 to perform an ACIS-I CTI measurement. Then head outside into the frigid weather to get home! SUMMARY: ---------- Executed CAP 903 to perform an ACIS-I CTI measurement. The radiation environment was well below the established criteria to execute the CTI CAP. Data looked nominal; everything went according to plan. ACE rates of interest are all headed downward at this time. ACE EPAM P3-derived rates (from FP6p and P7, respectively) are currently around 500, down from ~200,000 yesterday morning. GOES P4 and P41 predictors well below their scaled SCS107 trigger values. EPHIN P4GM is at about 1/100 of the trigger level of 300, so the outlook is very good for the resumption of the science mission at approximately 2004:011:23:30. Total orbital fluence for this orbit is expected to below 1E9 (pure ACE integration). 1) Detailed Timeline GMT 010:19:19 AOS on DSS-55 -- EARLY COMM!! 010:19:32 Altitude=90776 km and ascending 010:19:32 FP Temp=-119.9 010:19:32 E150 137.1 E1300 0.0 P4GM 0.0 P41GM 0.0 010:20:04 radiation telecon gives approval to resume the science mission with the JAN1104B load! 010:20:05 Enable and Activate SCS 107 010:20:15 Uplink JAN1104B load into SCS 128, 129, and 130 010:20:15 E150 318.0 E1300 2.9 P4GM 0.2 P41GM 0.0 010:20:16 EPHIN rates are low enough to begin ACIS CTI 010:20:17 RadMon Enabled 010:20:18 ObsId changed to 62842 010:20:19 Uplinked CTI CLD 010:20:19 Everything looks OK - no reason NOT to proceed with CAP 010:20:20 SCS 138 enabled and activated 010:20:22 Command IDs seen in telemetry and time of start science 010:20:22 E150 280.0 E1300 0.0 P4GM 0.2 P41GM 0.0 010:20:24 FP Temp=-120.5 -- Just a little bit colder than it is outside! 010:20:25 OC/CC clears and disables SCS 138 010:20:27 FP Temp=-119.9 010:20:35 Bias maps begin being telemetered! 010:20:37 FP Temp=-119.7 010:20:45 Bias maps finished being telemetered! 010:20:50 Event data from Cal Src looks nominal: 40-50 good evts/s 010:20:50 ACIS confirms normal science run 010:20:56 FP Temp=-119.7 010:20:56 E150 294.6 E1300 0.0 P4GM 0.1 P41GM 0.0 010:20:59 LOS 3) Chandra state at the beginning of the 1930 pass: UTC 2004:010:19:31:01 (Jan10) f_ACE -1.00e+05 F_CRM 0.00e+00 Kp 4.3 R km 90844A OBT 2004:010:19:30:33 CTUVCDU 9945397 OBC s/w NRML FMT2_EPS CPEstat NORM OBT 190150233.50 ONLVCDU 9945384 OBC Errs 0 OBSID 60414 EPState SUN SIM TTpos -99616 HETG Angle 79.46 PCADMODE NPNT RA 83.998 Bus V 29.61 SIM FApos -535 LETG Angle 77.59 PCONTROL NPNT Dec 17.000 Bus I 24.69 AOFSTAR GUID Roll 285.629 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang -0.86 Yaw Rate 0.14 HRC-S HV OFF ACA CCD Temp -15.6 Dith Zang 5.03 Pitch Rate 0.09 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.06 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -49.64 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -49.79 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 51.61 SA Resolv 154.37 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 12.95 RadMon DISA HRMA power 29.90 SCS 128 INAC -Y SA Amps 12.95 EPHIN Geom LARG OBA power 64.10 SCS 129 INAC +Y SA Temp 118.05 E150 11.7 SCS 130 INAC -Y SA Temp 119.15 E300 0.1 Roll Mom. 0.085 SCS 107 DISA E1300 0.0 Pitch Mom. -3.270 UpL Cmd Acc 789 EPH A-Leak 1.0200 P4GM 0.3 Yaw Mom. 7.068 Cmd Rej A 194 EPH B-Leak 0.5160 P41GM 0.0 Current Data: UTC 2004:010:19:31:01 (Jan10) f_ACE -1.00e+05 F_CRM 0.00e+00 Kp 4.3 R km 90844A Currently scheduled FPSI, OTG : HRC-S NONE Estimated Kp : 4.33 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 7.74e+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 : 2004:010:07:24:00 Geocentric Distance (km), Orbit Leg : 90776 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 3.59639000000e+03 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.94064654630e+10 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00 4) Chandra state at the end of the 1930 pass: UTC 2004:010:20:59:01 (Jan10) f_ACE -1.00e+05 F_CRM 0.00e+00 Kp 2.0 R km 96586A OBT 2004:010:20:57:47 CTUVCDU 9965823 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 190155467.43 ONLVCDU 9965808 OBC Errs 0 OBSID 62842 EPState SUN SIM TTpos -99616 HETG Angle 79.46 PCADMODE NPNT RA 84.000 Bus V 29.30 SIM FApos -535 LETG Angle 77.59 PCONTROL NPNT Dec 17.002 Bus I 28.49 AOFSTAR GUID Roll 285.629 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang -7.99 Yaw Rate -0.02 HRC-S HV OFF ACA CCD Temp -15.6 Dith Zang -0.64 Pitch Rate -0.19 OBSMode NEXT ACA Int Time 1.698 Roll Rate -0.06 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -49.64 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -49.77 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 51.53 SA Resolv 154.37 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 14.10 RadMon ENAB HRMA power 26.80 SCS 128 ACT -Y SA Amps 14.10 EPHIN Geom LARG OBA power 78.30 SCS 129 ACT +Y SA Temp 117.68 E150 294.6 SCS 130 ACT -Y SA Temp 118.78 E300 2.6 Roll Mom. -0.078 SCS 107 INAC E1300 0.0 Pitch Mom. -3.828 UpL Cmd Acc 5549 EPH A-Leak 1.0200 P4GM 0.1 Yaw Mom. 7.074 Cmd Rej A 5 EPH B-Leak 0.4800 P41GM 0.0 Current Data: UTC 2004:010:21:05:03 (Jan10) f_ACE -1.00e+05 F_CRM 0.00e+00 Kp 2.0 R km 96957A Currently scheduled FPSI, OTG : HRC-S NONE Estimated Kp : 2.00 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.30e+03 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 : 2004:010:07:24:00 Geocentric Distance (km), Orbit Leg : 96957 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 6.54755830000e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.94161106480e+10 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00 ------------------------------------------------------------------------ Shanil N. Virani ACIS Operations, Chandra X-ray Observatory Center Harvard-Smithsonian Center for Astrophysics "I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence." - Carl Sagan (1934-1996) ------------------------------------------------------------------------