SOT shift report 2005-08-23 L2224 File created at 2005:235:12:40 UTC = 08:40 AM Aug-23-2005 EDT End 11:00:00 AM EDT SOT Lead: Ed Kellogg PLAN ---- Recovery from SCS 107 shutdown: OBSID 2005:235:04:01:45.413 IDL -- start 2005:236:00:00:00.000 IDL -- end RADIATION SUMMARY ----------------- Solar soft proton flux is high and rising steadily (http://www.srl.caltech.edu/ACE/ASC/) Significant solar activity: The solar flare activity level was high. Two M class events were recorded yesterday. (http://www.dxlc.com/solar/). Beside the two long duration M class events yesterday, there was another long duration C class today,and another C event in progress as of 12:27 UTC. CMEs reported for past two days: August 20-21: No obvious partly or fully Earth directed CMEs were observed. August 22: A complex CME event was observed after the M2.6 LDE early in the day. While most of the CME was observed over the southwest limb, contributions from disappearing filaments to the east of the flare source made this a full halo CME. A large CME was observed over the southwest limb following the major LDE event during the afternoon. Extensions over the eastern hemisphere were much weaker, however, it is still likely that Earth will receive some effects even from this CME. (http://www.dxlc.com/solar/- Jan Alvestad) Radiation Measurement Observed Observed/Limit --------------------- -------- -------------- ACE 2 hr fluence 1.3E+08 1/2.8 (http://www.srl.caltech.edu/ACE/ASC/) GOES-10/P2 4-9 MeV protons `P4GM' 7.8E+01 1/1.2 (ftp://ftp2.sec.noaa.gov/pub/lists/pchan/G10pchan_5m.txt) GOES-10/P5 40-80 MeV protons `P41GM' 1.3E-01 1/06.1 (ftp://ftp2.sec.noaa.gov/pub/lists/pchan/G10pchan_5m.txt) *ACIS* Orbital fluence (since perigee) 1.6E+07 1/63.3 (http://asc.harvard.edu/mta/alerts/current.dat) EPHIN rates (cts/cm^2-s-sr) at last comm. OBSERVED ---------------------------------------- -------- E1300 (2.64-6.18 MeV electrons): 178.9; RADMON limit = 10 P4GM (5-8.3 MeV protons): 537.9; RADMON limit = 300 P41GM (41-53 MeV protons): 0.5; RADMON limit = 8.47 (http://cxc.harvard.edu/cgi-gen/mta/Snap/snap.cgi?action=Latest) ACIS focal plane temperature -119.7 C, at dddZhh:mm:ss 235Z02:59:25 (http://asc.harvard.edu/acis/RT/acisrt.html) REAL TIME OBSERVATIONS UTC OBSID ---------------------- --- ----- - Notes from 9 am meeting ------------------------ OPS: Passes 2 Supports Completed (1 34 Meter, 1 26 Meter) from 234/1300 - 235/1300 Dump status Current Data loss None Last load segment ends 2005:237:20:50 CAPs, last 24h: # 2005:234:20:00:41.276, 893A, Disable SCS 29 Next passes(yyyy:ddd:BOT-EOT)2005:235:1645-1735 2005:236:0205-0305 MP: We prepared, approved and executed a maneuver load after the shutdown. We are at good temperature, pitch angle and momentum. We decided not to try to resume observations later today. Rather, we'll plan for tomorrow night upon exiting the rad zone since the radiation environment is still unfavorable. We'll reevaluate the radiation tomorrow morning at 9:15. S/C: The SCS 107 shutdown ran nominally yesterday. GOT/IST: SIM for OCs including some IVODS practice tomorrow. DATA: We recovered and processed the science data from obs 5934, which was running at the time of shutdown. SOT: Radiation interrupt. SCS107 trip @ 2005:234:19:40:20 due to E1300 high levels, i.e. an electron event. MEETINGS -------- Radiation telecon held at 9:15. See report below. Data ---- On colossus (/dsops/GOT/input), - Aug 23 04:07 2005_234_2026_235_0230_Dump_EM_74745.gz. Evaluation of QL data --------------------- Target: SI SOT Eval. ------------------- ---------- ---------- Limiting Window: obs5934 ACIS-I OK --------------------- NOTES/ISSUES/PROBLEMS --------------------- Dan Schwartz' notes from the radiation telecon held at 9:15: Rates from the goes satellite indicate that the 4 million volt proton channel on ephin is about twice its trip limit. At the last pass, 0300 Greenwich time this morning, ephin protons and electrons were both above their trip limits. Ace soft protons are only about 5000, but are rising. We'll proceed with plan B, to pick up observing at perigee egress at 23:11 GMT tomorrow. Last uplink opportunity is at 21:25-22:25 tomorrow. Product will be built today. We'll have a radiation telecon again tomorrow following the 9am status, and then follow with a load review if it looks promising for the restart. If the restart seems in jeopardy at that time we will develop an alternate plan. SNAPSHOT -------- UTC 2005:235:12:22:01 (Aug23) f_ACE 6.05e+03 F_CRM 3.02e+08 Kp 3.3 R km 123693D OBT 2005:235:02:59:32 CTUVCDU 7654655 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 241153172.20 ONLVCDU 7654640 OBC Errs 0 OBSID 5934 EPState SUN SIM TTpos -99615 HETG Angle 79.09 PCADMODE NPNT RA 267.850 Bus V 30.08 SIM FApos -535 LETG Angle 77.59 PCONTROL NPNT Dec -29.569 Bus I 29.25 AOFSTAR GUID Roll 272.531 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc NNNTTTTT Dith Yang -0.40 Yaw Rate 0.23 HRC-S HV OFF ACA CCD Temp -15.6 Dith Zang -1.50 Pitch Rate 0.19 SHLD HV 0.0 ACA Int Time 1.698 Roll Rate 0.13 EVT RT 0 AOACSTAT OK FSS SunBeta SUN SHLD RT 0 FSS Alfa -0.43 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -28.25 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 53.52 SA Resolv 118.80 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -82.0 OBA Trng Fault NFLT +Y SA Amps 14.10 RadMon DISA HRMA power 61.60 SCS 128 INAC -Y SA Amps 14.68 EPHIN Geom SMAL OBA power 35.10 SCS 129 INAC +Y SA Temp 111.12 E150 53463.4 SCS 130 INAC -Y SA Temp 111.43 E300 2313.6 Roll Mom. -10.651 SCS 107 DISA E1300 178.9 Pitch Mom. -7.420 UpL Cmd Acc 44871 EPH A-Leak 1.0200 P4GM 537.9 Yaw Mom. 5.149 Cmd Rej A 160 EPH B-Leak 1.0200 P41GM 0.5 EPH temp 102.38 Gyro 2 Curr 1 103.20 Roll Bias -0.9282 M Unload MON Gyro 2 Curr 2 100.80 Pitch Bias -2.0554 CTX A PWR 36.43 TSC Move STOP Prop. line 03 101.95 Yaw Bias -1.1813 CTX A Volts 3.52 FA Move STOP Prop. line 04 70.46 OTG Move DISA