See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9735. Start at 076:12:56 GMT PLAN ---- Start in radiation zone Then: 2026:077:00:24:28 Grating: NONE 2026:077:00:26:18 RADMON Enable 2026:077:00:51:39 Obsid: 30429 SI: ACIS-I (17 ksec) Target: Abell 2255 2026:077:07:09:56 Obsid: 31066 SI: HRC-I (5 ksec) Target: HD 29419 2026:077:10:07:56 Obsid: 31378 SI: ACIS-I (2 ksec) Target: Cas A 2026:077:12:10:30 Obsid: 31379 SI: ACIS-I (2 ksec) Target: Cas A NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 3 Supports Completed in the last 24 hours (Total time: 6 hours) 3 SSR dumps CAP's / Procedures Run: CAP # | Time | Title / Description / Notes [1802](/occweb/web/webapps/ifot/ifot.php?r=flightops&t=properties&format=sheet&id=1001939) | 075/1849z | PR-651 SCS 31 Update Patch Apply PR-651 to both OBCs to update SCS 31. [750AP](/occweb/web/webapps/ifot/ifot.php?r=flightops&t=properties&format=sheet&id=1001946) | 076/0137z | Low Rate Dump of the On-line OBC Checksummed Memory (XSUM_1) Perform on-orbit OBC checksummed memory dump of the on-line OBC (address range of 0x00000 to 0x0FFFF). [750AQ](/occweb/web/webapps/ifot/ifot.php?r=flightops&t=properties&format=sheet&id=1001959) | 076/1239z | Low Rate Dump of the Online OBC Checksummed Memory (XSUM_2) Perform on-orbit OBC checksummed memorydump of the ONLN OBC (0x10000 to 0x1FFFF) Radiation (Solar Activity): Solar activity is expected to be low with a chance for M-class flares on days one and two (17 Mar, 18 Mar) and expected to be low with a slight chance for an M-class flare on day three (19 Mar). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (17 Mar, 18 Mar) and quiet to major storm levels on day three (19 Mar). Protons greater than 10 Mev have a slight chance of crossing threshold on day three (19 Mar). MP: MAR2326A command loads in works. ENG: No issues. GOT: Planned downtime of EHS system to update telemetry database to P018. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 31125 PSR J1813-1749 ACIS-S NONE 31257 M 87 ACIS-S NONE 30479 PWN J1631-4721 ACIS-S NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 076/1125-1325 1210 1310 DSS-24 GOLDSTONE 0810-0910 EDT, Tue 17 Mar 076/1915-2100 2000 2045 DSS-54 MADRID 1600-1645 EDT, Tue 17 Mar 077/0915-1145 1000 1130 DSS-24 GOLDSTONE 0600-0730 EDT, Wed 18 Mar 077/2140-2340 2225 2325 DSS-54 MADRID 1825-1925 EDT, Wed 18 Mar SNAPSHOT summary: ----------------- UTC 2026:076:12:57:01 (Mar17) f_ACE 8.93e+00 F_CRM 8.85e+07 Kp 0.7 R km 73110D OBT 2026:076:12:56:31 CTUVCDU 10016767 OBC s/w NRML FMT2_ONL CPEstat NORM OBT 890139391.12 ONLVCDU 10016760 OBC Errs 0 OBSID 41635 EPState SUN SIM TTpos -99615 HETG Angle 5.96 PCADMODE NMAN RA 184.840 Bus V 26.64 SIM FApos -467 LETG Angle 76.09 PCONTROL NPNT Dec 16.832 Bus I 24.94 AOFSTAR GUID Roll 143.277 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc SSSSSSSS Dith Yang -3.58 Yaw Rate 57.38 HRC-S HV OFF ACA CCD Temp -6.2 Dith Zang -2.37 Pitch Rate -15.76 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 239.34 EVT RT 4844 AOACSTAT OK FSS SunBeta NSUN SHLD RT 0 FSS Alfa -49.57 Batt 1 SOC 100.00% Avg HRMA Temp 72.70 FSS Beta -49.72 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 82.89 SA Resolv 162.66 Batt 3 SOC 100.00% A +15 V 2.81 OBA Tavg Fault NFLT SA Sun Pres ILLM A +5 V 4.84 OBA Trng Fault NFLT +Y SA Amps 12.37 A +24 V 0.00 HRMA power 41.10 SCS 128 ACT -Y SA Amps 12.18 OBA power 0.00 SCS 129 ACT +Y SA Temp 114.81 SCS 130 ACT -Y SA Temp 113.28 ACIS Stat7-0 6 Roll Mom. 2.659 SCS 131 ACT Cold Rad -115. Pitch Mom. 5.067 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -77.1 Yaw Mom. 10.905 SCS 133 ACT EIO Temp 0.0000 RadMon DISA PMTANKP 150.132 SCS 107 INAC EPH temp 152.81 UpLCmdAcc 43882 IRU2G2 curr 122.40 M Unload MON Cmd Rej A 230 IRU2G1 curr 96.00 Roll Bias 1.9945 TSC Move STOP Prop. line 03 127.54 Pitch Bias -4.1769 FA Move STOP CTX A PWR 36.32 Prop. line 04 129.74 Yaw Bias -1.8338 OTG Move DISA CTX A Volts 3.52 UTC 2026:076:12:57:01 (Mar17) f_ACE 8.93e+00 F_CRM 8.85e+07 Kp 0.7 R km 73110D Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 0.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 1.00e+01 GOES-R P4 flux, in RADMON P4GM units : 4.06e-02 GOES-R P7 flux, in RADMON P41GM units : 5.57e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 7.37e+02 Orbit Start Time : 2026:074:04:49:56 Geocentric Distance (km), Orbit Leg : 73510 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 2.6392e+03 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 2.6392e+03 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.1185e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 8.8529e+07