See https://cxc.harvard.edu/mta/SOT_reports/sot-shift.html
Shift L9447.
Start at 153:13:00 GMT
PLAN
----
Recover from Radiation Shutdown
Then:
2025:153:19:53:06 RADMON Disable
2025:153:19:54:02 RADMON Enable
2025:153:20:39:33 Obsid: 28192 SI: ACIS-S (10 ksec) Target: NGC 6657
2025:154:00:20:28 Obsid: 28517 SI: ACIS-I (15 ksec) Target: PSR J1101-6101
2025:154:04:58:24 Obsid: 30956 SI: ACIS-I (19 ksec) Target: XMMU J170147.3-
2025:154:10:18:38 Grating: LETG
2025:154:11:02:10 Obsid: 29536 SI: HRC-S (10 ksec) Target: HZ43
NOTES/ISSUES/PROBLEMS
---------------------
From the 9am status meeting:
9 Supports Completed over the weekend (Total time: 17.9 hours)
9 SSR dumps. Loads good through: 2025:157:11:50:02.
CAP's / Procedures Run:
CAP # | Time | Title / Description / Notes
[893B]| 152/1309z | Disable SCS 29
DISA SCS 29 Post 107 run
Radiation:
P3 levels are at around 2000 and ok for restart.
Solar activity is likely to be moderate with a slight chance for an X-class
flare on days one, two, and three (02 Jun, 03 Jun, 04 Jun).
MP:
Return to Science loads were reviewed and approved.
ENG:
SCS 107 run yesterday was nominal ..exact time of the trigger was 2025:152:05:51:38z
GOT:
No issues.
Quick look data:
----------------
OBSID Target Instr Grat
----- ------ ----- ----
28653 NGC 4579 ACIS-S HETG
Next Comms:
-----------
Support (GMT) BOT EOT Station Site Track time (local)
--------------- ---- ---- --------- --------- -------------------------
153/1845-2045 1930 2030 DSS-54 MADRID 1530-1630 EDT, Mon 2 Jun
154/0145-0345 0230 0330 DSS-65 MADRID 2230-2330 EDT, Mon 2 Jun
154/1050-1250 1135 1235 DSS-24 GOLDSTONE 0735-0835 EDT, Tue 3 Jun
SNAPSHOT summary:
-----------------
UTC 2025:153:12:19:01 (Jun 2) f_ACE 1.91e+03 F_CRM 5.38e+03 Kp 6.0 R km 25253D
OBT 2025:153:12:16:06 CTUVCDU 13565439 OBC s/w NRML FMT2_NORM CPEstat NORM
OBT 865253766.92 ONLVCDU 13565432 OBC Errs 0
OBSID 30114 EPState SUN
SIM TTpos -99616 HETG Angle 77.59 PCADMODE NPNT RA 57.144 Bus V 27.58
SIM FApos -467 LETG Angle 76.09 PCONTROL NPNT Dec -54.328 Bus I 19.80
AOFSTAR GUID Roll 167.465
ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF
ACA ImFunc STTSTSTS Dith Yang -15.12 Yaw Rate 0.13 HRC-S HV OFF
ACA CCD Temp -5.1 Dith Zang -6.78 Pitch Rate -0.05 SHLD HV 0.0
ACA Int Time 1.698 Roll Rate 0.58 EVT RT 4589
AOACSTAT OK FSS SunBeta SUN SHLD RT 0
FSS Alfa -0.29 Batt 1 SOC 100.00%
Avg HRMA Temp 74.00 FSS Beta 12.31 Batt 2 SOC 100.00% A -15 V -0.62
Avg OBA Temp 82.89 SA Resolv 77.25 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 10.06 A +24 V 0.00
HRMA power 29.90 SCS 128 ACT -Y SA Amps 9.67
OBA power 0.00 SCS 129 ACT +Y SA Temp 110.20
SCS 130 ACT -Y SA Temp 109.28 ACIS Stat7-0 6
Roll Mom. -10.002 SCS 131 DISA Cold Rad -115.
Pitch Mom. -4.501 SCS 132 DISA Ephin Temp 0.0000 Warm Rad -79.6
Yaw Mom. -0.787 SCS 133 DISA EIO Temp 0.0000 RadMon DISA
PMTANKP 150.132 SCS 107 DISA EPH temp 130.12
UpLCmdAcc 1241
IRU2G2 curr 115.20 M Unload MON Cmd Rej A 26
IRU2G1 curr 96.00 Roll Bias 1.8518 TSC Move STOP
Prop. line 03 86.72 Pitch Bias -4.0017 FA Move STOP CTX B PWR 36.96
Prop. line 04 91.82 Yaw Bias -1.8171 OTG Move DISA CTX B Volts 3.54
UTC 2025:153:13:08:01 (Jun 2) f_ACE 2.30e+03 F_CRM 6.26e+03 Kp 6.0 R km 15266D
Currently scheduled FPSI, OTG : HRC-S NONE
Estimated Kp : 6.0
ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 2.30e+03
GOES-R P4 flux, in RADMON P4GM units : 12.408
GOES-R P7 flux, in RADMON P41GM units : 0.014
GOES-R E > 2.0 MeV flux (p/cm^2-s-sr) : 61.9
Orbit Start Time : 11.781
Geocentric Distance (km), Orbit Leg : 15974 D
CRM Region : 2 (Magnetosheath)
External Proton Flux (p/cm^2-s-sr-MeV) : 6.1550e+03
Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.0000e+00
External Proton Orbital Fluence (p/cm^2-sr-MeV) : 1.8465e+06
Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.2550e+03