See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Shift L9751. Start at 092:13:00 GMT PLAN ---- Start in radiation zone Then: 2026:092:19:27:26 Grating: NONE 2026:092:19:48:22 RADMON Enable 2026:092:20:10:40 Obsid: 32273 SI: ACIS-I (10 ksec) Target: Perseus cluster 2026:092:23:38:58 Obsid: 30177 SI: ACIS-S (10 ksec) Target: NGC4694 2026:093:03:07:16 Obsid: 30337 SI: ACIS-I (15 ksec) Target: Perseus cluster 2026:093:08:10:34 Obsid: 32266 SI: ACIS-S (9 ksec) Target: NGC4694 2026:093:11:22:13 Obsid: 30340 SI: ACIS-I (15 ksec) Target: Perseus cluster NOTES/ISSUES/PROBLEMS --------------------- From the 9am status meeting: 2 Supports Completed in the last 24 hours (Total time: 3.8 hours) 3 SSR dumps. Loads good through: 2026:095:21:43:32.000 DSN DR's Created: DR Number| Station| Problem| Cause| Action --- |--- |--- |---|--- [C119134] | DSS-36| DSS-36 unable to support Chandra| DSS-36 servo motor RED| Radiation (Solar Activity): Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (02 Apr, 03 Apr, 04 Apr). Radiation (Geophysical Activity): The geomagnetic field is expected to be at quiet to minor storm levels on day one (02 Apr), quiet to active levels on day two (03 Apr) and unsettled to active levels on day three (04 Apr). Protons have a slight chance of crossing threshold on days one, two, and three (02 Apr, 03 Apr, 04 Apr). MP: Apr06 loads in work ENG: There was a gyro jog last night. GOT: No issues. Quick look data: ---------------- OBSID Target Instr Grat ----- ------ ----- ---- 32270 Perseus cluster W ACIS-I NONE 32272 Perseus cluster W ACIS-I NONE 32271 Perseus cluster W ACIS-I NONE 32265 NGC4496A ACIS-S NONE 32264 NGC4496A ACIS-S NONE Next Comms: ----------- Support (GMT) BOT EOT Station Site Track time (local) --------------- ---- ---- --------- --------- ------------------------- 092/1740-1940 1825 1925 DSS-54 MADRID 1425-1525 EDT, Thu 2 Apr 093/0135-0335 0220 0320 DSS-24 GOLDSTONE 2220-2320 EDT, Thu 2 Apr 093/0905-1050 0940 1035 DSS-65 MADRID 0540-0635 EDT, Fri 3 Apr 093/2115-2315 2200 2225 DSS-56 MADRID 1800-1825 EDT, Fri 3 Apr SNAPSHOT summary: ----------------- UTC 2026:092:09:13:02 (Apr 2) f_ACE 2.49e+04 F_CRM 4.88e+09 Kp 1.7 R km 76696D OBT 2026:092:09:10:00 CTUVCDU 15358463 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 891508200.82 ONLVCDU 15358456 OBC Errs 0 OBSID 31152 EPState SUN SIM TTpos 75624 HETG Angle 77.59 PCADMODE NPNT RA 135.321 Bus V 26.95 SIM FApos -467 LETG Angle 76.09 PCONTROL NPNT Dec 18.630 Bus I 22.11 AOFSTAR GUID Roll 252.652 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 15.69 Yaw Rate -0.16 HRC-S HV OFF ACA CCD Temp -11.7 Dith Zang -10.34 Pitch Rate 0.39 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate -0.28 EVT RT 6374 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa -0.17 Batt 1 SOC 100.00% Avg HRMA Temp 72.81 FSS Beta -30.40 Batt 2 SOC 100.00% A -15 V -0.62 Avg OBA Temp 76.79 SA Resolv 119.99 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 11.21 A +24 V 0.00 HRMA power 62.90 SCS 128 INAC -Y SA Amps 10.63 OBA power 70.20 SCS 129 ACT +Y SA Temp 113.58 SCS 130 ACT -Y SA Temp 113.28 ACIS Stat7-0 6 Roll Mom. 0.811 SCS 131 INAC Cold Rad -123. Pitch Mom. 6.590 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -79.6 Yaw Mom. 1.595 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 148.534 SCS 107 INAC EPH temp 178.27 UpLCmdAcc 18760 IRU2G2 curr 122.40 M Unload MON Cmd Rej A 16 IRU2G1 curr 96.00 Roll Bias 1.9060 TSC Move STOP Prop. line 03 172.34 Pitch Bias -4.1309 FA Move STOP CTX B PWR 36.92 Prop. line 04 155.32 Yaw Bias -1.7369 OTG Move DISA CTX B Volts 3.54 UTC 2026:092:13:27:02 (Apr 2) f_ACE 2.58e+04 F_CRM 4.93e+09 Kp 5.7 R km 42580D Currently scheduled FPSI, OTG : HRC-S HETG Estimated Kp : 3.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.58e+04 GOES-R P4 flux, in RADMON P4GM units : 4.88e+00 GOES-R P7 flux, in RADMON P41GM units : 5.56e-03 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 2.14e+02 Orbit Start Time : 2026:090:01:38:14 Geocentric Distance (km), Orbit Leg : 42914 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 3.2832e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 5.4090e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 4.9288e+09