SOT shift report 2001-08-28 L768 Start at 2001:240:10:49 GMT = 2001 Aug 28 06:49 am EDT End 11:00 am EDT SOT Lead Ed Kellogg PLAN ---- CAL ER Monitoring high proton flux from CME. RADIATION SUMMARY Observed Limit ----------------- -------- ----- ACE 2 hr fluence 2.9e7 3.6e8. GOES-8/P2 4-9 MeV protons `P4GM' 0.8 95 GOES-8/P5 40-80 MeV protons `P41GM' 0.008 0.78 *ACIS* Orbital fluence (since perigee) 3.1e9 1.0e9. EPHIN rates (cts/cm^2-s-sr) OBSERVED RADMON limit ---------------------------------------- -------- ----------- E1300 (electrons, 2.64 - 6.18 MeV): 0.3 SMALL 10.0 P4GM (protons, 5.0 - 8.3 MeV): 48.1 " 300.0 P41GM (protons, 41 - 53 MeV): 0 " 8.47 ACIS focal plane temperature -119.9 at 5:58 am EDT. REAL TIME OBSERVATIONS GMT OBSID ----------------------------------------------------------------- 8 stars 1015 61492 Notes from 9 am meeting ------------------------ OPS: Passes 4 over the last day(s) Dumps current Data loss none Load is good -> 237/1727 CAPs - Next passes 1835 Eclipse 5 went nominally. Next and final eclipse of the season will be on 243/0105. MP: The contingency load to deal with SCS 107 action was not needed last night. The SEP03 load is out; email comments due today. We had a telecon about gyro #1 yesterday. We don't think the electrical current glitches are serious. It's similar to the previous event on #2, but has less effect on pointing because it's on the roll axis. Plots were sent to Kearfott. It's now stable at 110 mA. New (returning) staff: Peter Allen, will be doing ground software. S/C: - GOT: - DATA: OBSID 2197 had problems processing. The right stars were in the wrong slots. SOE problem? SOT: We monitored high proton flux, and decided not to stop the load because it was marginal. It's now dropping steadily. Prediction for CME today: 0-20%. Data ---- On colossus (/dsops/GOT/input), - 2001_239_1338_239_1652_Dump_EM_78471.gz Evaluation of QL data --------------------- Target: OBSID SI SOT Eval. ---------------- -- --------- RXJ1532: obs1649 ACIS-S OK NOTES/ISSUES/PROBLEMS --------------------- The problem with processing the OBSID 2128 data from the gyro glitch of 25 Aug. was apparently there was a limit of ~1 arcsec/sec on the rate. This may be a little too tight. Chandra's state was: (http://cxc.harvard.edu/mta_days/MIRROR/Snap/snap.cgi) --------------------------------------------------------------------------- UTC 2001:240:10:01:12 (Aug28) f_ACE 3.90e+04 F_CRM 6.93e+08 Kp 1.3 R km 50540D OBT 2001:240:09:58:13 CTUVCDU 3371391 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 115379893.77 ONLVCDU 3371376 OBC Errs 0 OBSID 61492 EPState ECLP SIM TTpos -99616 HETG Angle 79.84 PCADMODE NPNT RA 28.197 Bus V 28.67 SIM FApos -467 LETG Angle 77.96 PCONTROL NPNT Dec 74.802 Bus I 29.75 AOFSTAR GUID Roll 129.773 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc TTTTTTTT Dith Yang 7.71 Yaw Rate -0.02 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 2.47 Pitch Rate 0.19 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.15 Door OP UNAC AOACSTAT OK FSS SunBeta NSUN Door CL UNAC FSS Alfa -49.63 Batt 1 SOC 83.06% Avg HRMA Temp 70.61 FSS Beta -49.78 Batt 2 SOC 82.77% ACIS Stat7-0 67 Avg OBA Temp 51.05 SA Resolv 90.04 Batt 3 SOC 82.93% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres DARK Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 0.14 RadMon DISA HRMA power 121.40 SCS 128 ACT -Y SA Amps 0.06 EPHIN Geom SMAL OBA power 105.60 SCS 129 INAC +Y SA Temp 88.93 E150 34634.1 SCS 130 ACT -Y SA Temp 88.93 E300 70.1 Roll Mom. 7.972 SCS 107 INAC E1300 0.3 Pitch Mom. -1.328 UpL Cmd Acc 15989 EPH A-Leak 0.9320 P4GM 48.1 Yaw Mom. 1.512 Cmd Rej A 141 EPH B-Leak 0.1680 P41GM 0.0 Explanation Current Data: UTC 2001:240:10:58:32 (Aug28) f_ACE 3.76e+04 F_CRM 6.93e+08 Kp 2.0 R km 42779D Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 1.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 3.75e+04 Orbit Start Time : 2001:237:22:44:00 Geocentric Distance (km), Orbit Leg : 43461 D CRM Region : 3 (Magnetosphere) External Proton Flux (p/cm^2-s-sr-MeV) : 2.34176000000e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 2.97169640505e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.92646015330e+08 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Aug_28_2001_L768.txt