See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L6424. Start at 052:13:00 GMT PLAN ---- Finish: Obsid: 18617 SI: ACIS-S (45 ksec) Target: Vela X-1 Then: 2017:052:18:16:37 RADMON Disable 2017:053:08:07:16 RADMON Enable 2017:053:08:17:23 Obsid: 19717 SI: ACIS-S (25 ksec) Target: GRS 1915+105 2017:053:15:17:37 Grating: NONE NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports completed in the last 24 hours (total time: 6.9 hours) 3 SSR dumps Radiation: Solar activity is expected to be very low with a chance for a C-class flares on days one, two, and three (21 Feb, 22 Feb, 23 Feb). MP: Feb2717 loads remain in work. Eng: The OBC error log showed a "Fixed_Overflow_Error" Friday and Saturday. This has been traced to a large number of samples showing high radiation in the Ephin radiation monitor (e.g. E1300) which is obsolete. This has no mission impact. An update to the K constant limit for E1300 and related obsolete monitors will prevent a recurrence. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 19626 QJ0158-4325 ACIS-S NONE 19331 NGC 4382 ACIS-S NONE 18985 Aql X-1 ACIS-S NONE 20011 Coma cluster ACIS-I NONE 19783 Mrk 273 ACIS-S NONE 20010 Coma cluster ACIS-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 052/2020-2235 2120 2220 DSS-65 MADRID 1620-1720 EST, Tue 21 Feb 053/0155-0410 0255 0355 DSS-36 CANBERRA 2155-2255 EST, Tue 21 Feb 053/1115-1330 1215 1315 DSS-24 GOLDSTONE 0715-0815 EST, Wed 22 Feb 053/1725-1940 1825 1925 DSS-54 MADRID 1325-1425 EST, Wed 22 Feb SNAPSHOT summary: ---------------- UTC 2017:052:12:13:01 (Feb21) f_ACE 1.92e+01 F_CRM 4.46e+08 Kp 0.7 R km 96151D OBT 2017:052:12:10:17 CTUVCDU 2078207 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 604066217.77 ONLVCDU 2078192 OBC Errs 0 OBSID 18617 EPState SUN SIM TTpos 75624 HETG Angle 5.96 PCADMODE NPNT RA 135.497 Bus V 28.20 SIM FApos -467 LETG Angle 76.84 PCONTROL NPNT Dec -40.553 Bus I 26.97 AOFSTAR GUID Roll 326.980 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 0.17 Yaw Rate -0.14 HRC-S HV ON ACA CCD Temp -13.4 Dith Zang 4.87 Pitch Rate -0.14 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate 0.00 EVT RT 0 AOACSTAT OK FSS SunBeta SUN SHLD RT 17 FSS Alfa 9.28 Batt 1 SOC 100.00% Avg HRMA Temp 71.08 FSS Beta -36.64 Batt 2 SOC 100.00% ACIS Stat7-0 65 Avg OBA Temp 61.53 SA Resolv 126.48 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 13.14 RadMon ENAB HRMA power 64.50 SCS 128 ACT -Y SA Amps 13.53 EPHIN Geom VLD OBA power 35.10 SCS 129 ACT +Y SA Temp 117.32 E150 2998272.0 SCS 130 ACT -Y SA Temp 117.32 E300 473088.0 Roll Mom. 15.128 SCS 131 ACT E1300 1132.0 Pitch Mom. 8.302 SCS 132 INAC EPH A-Leak 1.0200 UpLCmdAcc 2084 Yaw Mom. -11.014 SCS 133 ACT EPH B-Leak 0.0000 Cmd Rej A 98 PMTANKP 116.560 SCS 107 INAC EPH temp 161.30 Gyro 2 Curr 1 103.20 EPH 27V 26.96 M Unload MON Gyro 2 Curr 2 122.40 Roll Bias -0.1571 TSC Move STOP Prop. line 03 138.53 Pitch Bias -1.8908 CTX B PWR 36.77 FA Move STOP Prop. line 04 127.54 Yaw Bias -1.1699 CTX B Volts 3.54 OTG Move DISA UTC 2017:052:13:34:01 (Feb21) f_ACE 1.98e+01 F_CRM 4.55e+08 Kp 1.0 R km 89884D Currently scheduled FPSI, OTG : ACIS-S HETG Estimated Kp : 0.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.98e+01 GOES-13 P2 flux, in RADMON P4GM units : 0.20 GOES-15 P2 flux, in RADMON P4GM units : 0.24 GOES-13 P5 flux, in RADMON P41GM units : 0.22 GOES-15 P5 flux, in RADMON P41GM units : 0.22 GOES-13 E > 2.0 MeV flux (p/cm^2-s-sr) : 471.0 Orbit Start Time : 2017:050:08:54:01 Geocentric Distance (km), Orbit Leg : 90288 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 6.9375e+03 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.3875e+03 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.2032e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.4872e+08