See http://cxc.harvard.edu/mta/SOT_reports/sot-shift.html Report M9895 Start at 236:15:30 = 11:30am Monday, August 24, 2026 End at 236:16:11 = 12:11pm Monday August 24, 2026 HRC SOT Shift Report M9895 HRC Personnel: Dan Patnaude, Ralph Kraft, Gerrit Schellenberger, Tom Gauron PLAN: ---- Execute CAP 1804A NOTES/ISSUES/PROBLEMS: ---------------------- HRC HVPS was brought up nominally and data was collected for approximately 850 sec. The current limiting circuit was tripped at approximately 16:09 UT. CLD Files used: NONE SUMMARY: -------- The HRC-S HV ramp up completed as commanded and data was acquired for approximately 850 sec, before the team observed high rate > 2000 and the current limiting circuit tripped. A command was sent to manually power down the HRC-S HVPS, as a contingency clean up action. UTC 2026:236:15:56:01 (Aug24) f_ACE 2.21e+02 F_CRM 5.12e+08 Kp 0.7 R km 105428D OBT 2026:236:15:55:37 CTUVCDU 13674367 OBC s/w NRML FMT1_NORM CPEstat NORM OBT 903974137.07 ONLVCDU 13674360 OBC Errs 3 OBSID 32495 EPState SUN SIM TTpos -99616 HETG Angle 77.59 PCADMODE NPNT RA 241.983 Bus V 27.26 SIM FApos -1060 LETG Angle 75.71 PCONTROL NPNT Dec -48.439 Bus I 23.14 AOFSTAR GUID Roll 261.783 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang 19.95 Yaw Rate -0.19 HRC-S HV ON ACA CCD Temp -3.2 Dith Zang 17.06 Pitch Rate 0.04 SHLD HV 8.0 ACA Int Time 1.698 Roll Rate 0.04 EVT RT 5609 AOACSTAT OK FSS SunBeta SUN SHLD RT 4589 FSS Alfa -0.25 Batt 1 SOC 100.00% Avg HRMA Temp 74.76 FSS Beta -7.81 Batt 2 SOC 100.00% A -15 V -14.45 Avg OBA Temp 91.12 SA Resolv 97.22 Batt 3 SOC 100.00% A +15 V 14.53 OBA Tavg Fault NFLT SA Sun Pres ILLM A +5 V 4.84 OBA Trng Fault NFLT +Y SA Amps 11.60 A +24 V 0.00 HRMA power 33.00 SCS 128 ACT -Y SA Amps 11.21 OBA power 0.00 SCS 129 ACT +Y SA Temp 109.89 SCS 130 ACT -Y SA Temp 108.70 ACIS Stat7-0 64 Roll Mom. 9.101 SCS 131 ACT Cold Rad -120.7 Pitch Mom. -2.925 SCS 132 ACT Ephin Temp 0.0000 Warm Rad -79.6 Yaw Mom. 2.148 SCS 133 ACT EIO Temp 0.0000 RadMon ENAB PMTANKP 151.731 SCS 107 INAC EPH temp 126.31 UpLCmdAcc 34503 IRU2G2 curr 117.60 M Unload MON Cmd Rej A 125 IRU2G1 curr 93.60 Roll Bias 2.0695 TSC Move STOP Prop. line 03 168.93 Pitch Bias -4.2619 FA Move STOP CTX B PWR 36.96 Prop. line 04 151.92 Yaw Bias -1.8571 OTG Move DISA CTX B Volts 3.54 Explanation Current Data: UTC 2026:236:15:56:01 (Aug24) f_ACE 2.21e+02 F_CRM 5.12e+08 Kp 0.7 R km 105428D Currently scheduled FPSI, OTG : ACIS-S NONE Estimated Kp : 2.7 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.29e+01 GOES-R P4 flux, in RADMON P4GM units : 3.15e+00 GOES-R P7 flux, in RADMON P41GM units : 1.12e-02 GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 1.27e+03 Orbit Start Time : 2026:177:08:08:58 Geocentric Distance (km), Orbit Leg : 141783 A CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 1.8248e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 1.8248e+04 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 8.1745e+08 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 5.1173e+08