See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L6465. Start at 093:13:00 GMT PLAN ---- Finish: Obsid: 18897 SI: ACIS-S (30 ksec) Target: TWA 33 Then: 2017:093:17:29:20 Obsid: 19872 SI: ACIS-I (24 ksec) Target: A1795 2017:094:00:12:55 Grating: LETG 2017:094:00:25:52 Obsid: 19838 SI: HRC-S (20 ksec) Target: HZ43 2017:094:05:59:46 Grating: NONE 2017:094:06:53:17 Obsid: 18901 SI: ACIS-S (60 ksec) Target: J1207-3900 2017:095:00:07:42 Obsid: 18992 SI: ACIS-I (1 ksec) Target: IGR J17315-3221 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 9 Supports completed over the weekend (total time: 25.7 hours) 9 SSR dumps Loads good through: 2017:098:01:55:44 At 2017:090:19:01:57 Chandra transitioned to Bright Star Hold following the maneuver to ObsID 19924. The transition was nominal, science instruments were safed properly, and all telemetry and spacecraft subsystems appeared as expected. 5 CAPs: - 893B, 090/2031z, DISA SCS 29 (Post BSH) - 1075B, 090/2036z, DISA SCS 26 (Post BSH) - 1414, 091/0021z, Bright Star Hold Recovery - 1415, 091/0131z, ACIS I CTI Measurement (Post BSH Recovery) - 1076B, 090/2040z, Contingency Monitoring SCS 26 is DISA Radiation: Due to two large sun spots number 2644 and 2645 Solar activity is likely to be moderate with a slight chance for an X-class flare on days one and two (03 Apr, 04 Apr) and expected to be low with a chance for M-class flares and a slight chance for an X-class flare on day three (05 Apr). MP: Nothing to report. Eng: On Friday evening the spacecraft transitioned to BSH. Initial analysis indicates that this was related to two stars being disturbed by a hot pixel in the observation before the maneuver to ObsID 19924. BSH recovery was completed on Friday night. SCS 26 was disabled due to HRMA av temperatures. Science recovery replan loads, Apr0217B, were uplinked on Saturday night. SCS 26 has been re-enabled. The team will continue investigation of this anomaly, as well as discuss the next mitigation steps related to star tracking. ACA dark current calibration was performed on Sunday and provided a good data set for further analysis. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 20051 NGC 4848 ACIS-S NONE 18930 iota Cen HRC-I NONE 18983 IGR J16120-3543 ACIS-I NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 093/1230-1445 1330 1430 DSS-15 GOLDSTONE 0930-1030 EDT, Mon 3 Apr 093/2100-2315 2200 2300 DSS-65 MADRID 1800-1900 EDT, Mon 3 Apr 094/0230-0445 0330 0430 DSS-65 MADRID 2330-0030 EDT, Mon 3 Apr 094/1225-1440 1325 1425 DSS-24 GOLDSTONE 0925-1025 EDT, Tue 4 Apr 094/2020-2235 2120 2220 DSS-65 MADRID 1720-1820 EDT, Tue 4 Apr SNAPSHOT summary: ---------------- UTC 2017:093:04:58:02 (Apr 3) f_ACE 0.00e+00 F_CRM 5.11e+07 Kp 1.7 R km 99279A OBT 2017:093:04:55:09 CTUVCDU 15800319 OBC s/w NRML FMT1_NORM CPEstat NORM OBT 607582509.17 ONLVCDU 15800304 OBC Errs 0 OBSID 18306 EPState SUN SIM TTpos -50504 HETG Angle 78.34 PCADMODE NPNT RA 114.807 Bus V 28.52 SIM FApos -715 LETG Angle 76.84 PCONTROL NPNT Dec 5.244 Bus I 23.14 AOFSTAR GUID Roll 263.504 ACA Object FFFSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang -0.17 Yaw Rate 0.08 HRC-S HV OFF ACA CCD Temp -11.7 Dith Zang 11.40 Pitch Rate -0.27 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate 0.00 EVT RT 1 AOACSTAT OK FSS SunBeta SUN SHLD RT 17 FSS Alfa -0.27 Batt 1 SOC 100.00% Avg HRMA Temp 71.42 FSS Beta -12.19 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 61.84 SA Resolv 101.89 Batt 3 SOC 100.00% Cold Rad -123.1 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -79.6 OBA Trng Fault NFLT +Y SA Amps 11.21 RadMon ENAB HRMA power 62.90 SCS 128 INAC -Y SA Amps 11.41 EPHIN Geom VLD OBA power 8.50 SCS 129 ACT +Y SA Temp 115.12 E150 6995968.0 SCS 130 ACT -Y SA Temp 114.81 E300 825344.0 Roll Mom. -7.143 SCS 131 INAC E1300 14.0 Pitch Mom. -7.761 SCS 132 ACT EPH A-Leak 1.0200 UpLCmdAcc 21506 Yaw Mom. 7.903 SCS 133 ACT EPH B-Leak 0.0000 Cmd Rej A 178 PMTANKP 127.751 SCS 107 INAC EPH temp 155.64 Gyro 2 Curr 1 100.80 EPH 27V 26.96 M Unload MON Gyro 2 Curr 2 122.40 Roll Bias -0.1553 TSC Move STOP Prop. line 03 119.92 Pitch Bias -1.8755 CTX A PWR 36.38 FA Move STOP Prop. line 04 90.80 Yaw Bias -1.1979 CTX A Volts 3.52 OTG Move DISA UTC 2017:093:12:42:01 (Apr 3) f_ACE 2.38e+01 F_CRM 7.31e+07 Kp 1.0 R km 123906A Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 0.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.38e+01 GOES-13 P2 flux, in RADMON P4GM units : 0.40 GOES-15 P2 flux, in RADMON P4GM units : 0.36 GOES-13 P5 flux, in RADMON P41GM units : 0.22 GOES-15 P5 flux, in RADMON P41GM units : 0.19 GOES-13 E > 2.0 MeV flux (p/cm^2-s-sr) : 37900.0 Orbit Start Time : 2017:092:16:14:01 Geocentric Distance (km), Orbit Leg : 123793 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 3.3658e+03 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 3.3658e+03 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.1012e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 7.3143e+07