Sep_27_2001_L798.txt Shift L798 Start at 2001:270:11:30:00 GMT = 2001 Sep 27 7:30am EDT End 2001 Sep 27 12:00pm EDT SOT shift report 2001-09-27 L798 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Sep_27_2001_L798.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Not observing due to ongoing high solar radiation. SEP2801B load prepared and approved, would start at 271:0120 (tonight) if radiation levels permit (unlikely). Decided to initiate another replan, SEP3001. This load will pick up at observation 1981 (2001:273:05:17) and include all of the OCT01 load. Current ACE solar proton flux levels are at about 30,000 and slowly decreasing. EPHIN rates at 11:40am EDT are: Channel Rate Trip Ratio E1300 80.8 10.0 8.1 P4GM 1059.6 300.0 3.5 P41GM 4.3 8.47 0.5 Planned COMM: AOS LOS 2001 270.166 2001 270.208 270 0400 0500 0515 DSS-24 2001 270.618 2001 270.701 270 1450 1650 1700 DSS-66 2001 270.958 2001 271.000 270 2300 0000 0015 DSS-24 2001 271.260 2001 271.302 271 0615 0715 0730 DSS-34 2001 271.704 2001 271.788 271 1655 1855 1905 DSS-66 2001 272.010 2001 272.052 271 0015 0115 0130 DSS-54 2001 272.385 2001 272.427 272 0915 1015 1030 DSS-54 2001 272.763 2001 272.847 272 1820 2020 2030 DSS-27 2001 273.215 2001 273.298 273 0510 0710 0720 DSS-16 2001 273.708 2001 273.788 273 1700 1855 1905 DSS-66 2001 273.916 2001 273.958 273 2200 2300 2315 DSS-24 Seq # ObsID It Target start time SI Grat RA dec roll slew ---------------------------------------------------------------------------------------------------------- Recovery load 2 - SEP2801 ---- I1893 00 CAL-ER 2001:271:01:51:15.531 0.0 -- -- 296.0000 70.0000 250.38 69.79 200121 01893 00 S106 FIR 2001:271:02:19:25.531 50.4 ACIS-I NONE 306.8457 37.4036 250.66 34.38 500141 01964 00 AX J1844-02 2001:271:16:45:45.016 19.8 HRC-I NONE 281.2056 -2.9264 272.55 48.68 ---- T_E96 00 CAL-ER 2001:271:23:25:46.527 6.5 -- -- 351.8000 -11.7000 315.20 123.19 ---- T_X97 00 CAL-ER 2001:272:08:41:13.974 20.8 -- -- 310.0000 -40.0000 295.54 46.41 500133 01956 00 SN1998BW 2001:272:14:55:53.974 50.0 ACIS-S NONE 293.7325 -52.8368 285.87 17.11 500158 01981 00 SGR 1627-41 2001:273:05:17:13.974 50.0 ACIS-S NONE 248.9506 -47.5774 250.87 28.66 ORBITAL EVENTS: 2001:270:23:57:43.232 296 ORBIT APOGEE 2001:272:01:13:51.558 296 ELECTRON1 RADIATION ENTRY0 2001:272:07:41:56.721 296 ORBIT PERIGEE 2001:272:11:41:51.558 297 ELECTRON1 RADIATION EXIT0 2001:273:15:25:20.980 297 ORBIT APOGEE 2001:274:17:03:11.682 297 ELECTRON1 RADIATION ENTRY0 EVENTS DONE OBSID -------------- ---- ----- Start Shift 270:1130 AOS DSS-66 270:1450 61455 Status at noon was as expected with stopped loads 270:1600 (see note 1) LOS DSS-66 270:1650 End of shift 270:1600 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at AOS: UTC 2001:270:16:00:27 (Sep27) f_ACE 3.14e+04 F_CRM 0.00e+00 Kp 3.7 R km 132123A OBT 2001:270:15:59:54 CTUVCDU 13571176 OBC s/w NRML FMT2_NORM CPEstat NORM OBT 117993594.93 ONLVCDU 13571168 OBC Errs 0 OBSID 61455 EPState SUN SIM TTpos -99616 HETG Angle 6.34 PCADMODE NPNT RA 137.002 Bus V 30.55 SIM FApos -467 LETG Angle 77.96 PCONTROL NPNT Dec 39.999 Bus I 29.25 AOFSTAR GUID Roll 57.386 ACA Object SSSSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -0.19 Yaw Rate -0.25 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 8.00 Pitch Rate -0.21 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.15 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa 0.13 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta 29.69 Batt 2 SOC 100.00% ACIS Stat7-0 66 Avg OBA Temp 51.29 SA Resolv 59.33 Batt 3 SOC 100.00% Cold Rad -127.9 OBA Tavg Fault NFLT SA Sun Pres ILLM Warm Rad -84.4 OBA Trng Fault NFLT +Y SA Amps 14.10 RadMon DISA HRMA power 43.30 SCS 128 INAC -Y SA Amps 14.88 EPHIN Geom SMAL OBA power 70.20 SCS 129 INAC +Y SA Temp 111.43 E150 111219.5 SCS 130 INAC -Y SA Temp 112.04 E300 2188.2 Roll Mom. -4.555 SCS 107 INAC E1300 78.5 Pitch Mom. 16.262 UpL Cmd Acc 56009 EPH A-Leak 1.0200 P4GM 1024.4 Yaw Mom. 1.879 Cmd Rej A 215 EPH B-Leak 0.2480 P41GM 4.7 Explanation Current Data: UTC 2001:270:16:00:46 (Sep27) f_ACE 3.14e+04 F_CRM 0.00e+00 Kp 3.7 R km 132123A Currently scheduled FPSI, OTG : HRC-S NONE Costello Kp : 3.67 ACE EPAM P3 Proton Flux (p/cm^2-s-sr-MeV) : 3.14e+04 Orbit Start Time : 2001:269:16:19:00 Geocentric Distance (km), Orbit Leg : 132070 A CRM Region : 2 (Magnetosheath) External Proton Flux (p/cm^2-s-sr-MeV) : 7.11634300000e+04 Attenuated Proton Flux (p/cm^2-s-sr-MeV) : 0.00000000000e+00 External Proton Orbital Fluence (p/cm^2-sr-MeV) : 6.69058174500e+09 Attenuated Proton Orbital Fluence (p/cm^2-sr-MeV) : 0.00000000000e+00 HRC SP PS = ON Stp 42/54 IM PS = OFF Shield 1 HV = OFF Shield 2 HV = OFF Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 0 ACIS FP Temp = -119.9 DEA Pwr = 30.0 DPA Pwr = 12.2 Science State = Science Idle 2) Notes from 9:00am meeting: Operations (Darrel): - 4 supports over last 24 hrs 1 34m, 3 26m - One 26m support was 26m automation system test which went well. - No loads uplinked - Dumps current, will complete day 269 merge file soon Mission Planning (Ken): - Radiation replan SEP2801B approved - Two possible uplink times for this load, 270:1050 and 270:2300 (today at 10:50am or 7pm) - Need to decide on next replan if things do not look good for starting SEP28. Possible intercepts are before obs 1956 or 1981. (decided on 1981 at 11am telecon) S/C Engineering(Dan/Rino): - A small gyro bias shift occurred on day 267 with no corresponding gyro current shift (0.004 deg/hr). - Will develop a gyro analysis plan with TRW West and Kearfott - Kearfott looking at data now, will report soon - Low load bus current violations noted, caused by lengthly stay at low pitch att. Also some thermal limit violations for same reason SOT(Bill): - ACIS telemetry limits violations yesterday were in serial-digital telemetry and were symtomatic of an SEU as seen in the past (Per Peter Ford). - Radiation high (see above) DSOPS(Joy): - No quick looks GOT(Adam): - In split string mode for ASVT testing Meetings/events: - 9:15am, radiation discussion - 10am, CSC tagup - 11am, radiation telecon - 11am, internal FOT mtg - 2pm, FDB - 3pm, offline systems mtg 3) Quick look data: Seq # ObsID It Target start time SI Grat Comment ----------------------------------------------------------------------------------------------------------