See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L7917. Start at 084:14:00 GMT PLAN ---- Finish: Obsid: 24797 SI: ACIS-S (21 ksec) Target: PKS 1136-135 Then: 2021:084:18:18:11 Grating: LETG 2021:084:18:47:52 Obsid: 23533 SI: HRC-S (29 ksec) Target: SNR 1987A 2021:085:02:51:47 Grating: NONE 2021:085:03:24:28 Obsid: 24800 SI: ACIS-S (31 ksec) Target: PKS 1136-135 2021:085:12:49:37 Grating: LETG 2021:085:13:43:35 Obsid: 24994 SI: HRC-S (30 ksec) Target: H1821+643 NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports completed in the last 24 hours (total time: 6.9 hours) 3 SSR dumps 3 CAPs: - 1561, 083/1748z, PR-487 SCS 89 Patch Uplink, to include updated values for HRC-I high voltage ramp-up steps - 750 AG, 084/0254z, Low Rate Dump of the On-line OBC Checksummed Memory (XSUM_1) - 750 AH, 084/1122z, Low Rate Dump of the On-line OBC Checksummed Memory (XSUM_2) Radiation: Solar activity is expected to be very low with a slight chance for a C-class flare on days one, two, and three (25 Mar, 26 Mar, 27 Mar). MP: Continuing to work on the Mar2921 loads. Decision on the TOO in progress should be made this afternoon. Eng: No issues. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 22948 H1821+643 HRC-S LETG Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 084/1000-1215 1100 1200 DSS-24 GOLDSTONE 0700-0800 EDT, Thu 25 Mar 084/1815-2030 1915 2015 DSS-26 GOLDSTONE 1515-1615 EDT, Thu 25 Mar 085/0130-0345 0230 0330 DSS-56 MADRID 2230-2330 EDT, Thu 25 Mar 085/1000-1215 1100 1200 DSS-24 GOLDSTONE 0700-0800 EDT, Fri 26 Mar 085/2030-2245 2130 2230 DSS-26 GOLDSTONE 1730-1830 EDT, Fri 26 Mar SNAPSHOT summary: ---------------- UTC 2021:084:11:59:01 (Mar25) f_ACE 2.02e+01 F_CRM 1.00e+00 Kp 1.7 R km 141501A OBT 2021:084:11:56:08 CTUVCDU 1772671 OBC s/w NRML FMT1_NORM CPEstat NORM OBT 733060568.97 ONLVCDU 1772664 OBC Errs 0 OBSID 22960 EPState SUN SIM TTpos -99616 HETG Angle 77.96 PCADMODE NPNT RA 125.470 Bus V 28.36 SIM FApos -990 LETG Angle 4.09 PCONTROL NPNT Dec -42.994 Bus I 22.11 AOFSTAR GUID Roll 291.291 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 18.81 Yaw Rate 0.10 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang -6.60 Pitch Rate 0.12 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate 0.07 EVT RT 255 AOACSTAT OK FSS SunBeta SUN SHLD RT 4589 FSS Alfa -0.57 Batt 1 SOC 100.00% Avg HRMA Temp 72.25 FSS Beta -23.87 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 64.19 SA Resolv 113.79 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 ACT -Y SA Amps 10.83 OBA power 8.10 SCS 129 ACT +Y SA Temp 115.49 SCS 130 INAC -Y SA Temp 115.12 Roll Mom. -1.625 SCS 131 ACT Pitch Mom. -5.925 SCS 132 ACT Ephin Temp 0.0000 UpLCmdAcc 5443 Yaw Mom. 8.747 SCS 133 INAC EIO Temp 0.0000 Cmd Rej A 237 PMTANKP 132.547 SCS 107 INAC EPH temp 107.86 IRU2G2 curr 108.00 M Unload MON IRU2G1 curr 91.20 Roll Bias 0.5868 TSC Move STOP Prop. line 03 140.72 Pitch Bias -2.6287 CTX B PWR 36.69 FA Move STOP Prop. line 04 111.86 Yaw Bias -1.5520 CTX B Volts 3.54 OTG Move DISA UTC 2021:084:12:59:02 (Mar25) f_ACE 1.88e+01 F_CRM 1.00e+00 Kp 1.7 R km 142885A Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 1.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.88e+01 GOES-R P4 flux, in RADMON P4GM units : 0.059 GOES-R P7 flux, in RADMON P41GM units : 0.020 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 423.0 Orbit Start Time : 2021:083:11:44:01 Geocentric Distance (km), Orbit Leg : 142885 A CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 1.5798e+02 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.5798e+02 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.2987e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 5.7707e+07