Feb_02_2000_L194.txt Shift L194 Start at 2000:033:13:00:00 GMT = 2000 Feb 02 8:00am EST End 2000 Feb 02 12:00pm EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Feb_02_2000_L194.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running load JAN3000D, HRC-S/LETG observation of CRAB PULSAR, OBSID 759. 2000:031:09:56:17.101 67 EAPOGEE ORBIT APOGEE 2000:032:17:40:24.318 67 EPERIGEE ORBIT PERIGEE 2000:034:01:24:21.654 68 EAPOGEE ORBIT APOGEE 2000:035:09:09:20.252 68 EPERIGEE ORBIT PERIGEE 2000:036:16:52:28.642 69 EAPOGEE ORBIT APOGEE 2000:038:00:37:20.929 69 EPERIGEE ORBIT PERIGEE 2000:039:08:20:22.438 70 EAPOGEE ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 033:1300 State at last pass was nominal EXCEPT as noted below (see note 1) AOS DSS-27 (Goldstone) 033:1400 Chandra status at mid-pass was nominal (see note 2) 759 LOS DSS-27 033:1600 End of shift 033:1630 NOTES/ISSUES/PROBLEMS --------------------- 1) OC noticed that two flags were in incorrect state, ACDAT_RS = PEA1 DID AC RESET OCCUR FLAG == YES ACDAT_CF = PEA1 INITIAL CAL FILL OK FLAG == NOTOK ACA workstation real time telemetry capture from last pass confirmed that these two flags were set as above at beginning of last pass (033:0445 - 033:0645) however, ACA operation was completely normal along with S/C state. After investigation, this problem appears to be either a telemetry or telemetry database problem, not an actual camera reset. PS: These variables are only available when an 8 x 8 image is in slot 0, i. e., a FID light in slot 0. State at last COMM: UTC 2000:033:06:45:02 (Wed Feb 2) f_ACE 1.92e+01 F_ACE 3.87e+05 R km 108001A OBT 2000:033:06:44:31 CTUVCDU 9598719 OBC s/w NRML FMT1_NORM CPEstat NORM OBT 65861071.92 ONLVCDU 9598712 OBC Errs 0 OBSID 745 EPState SUN SIM TTpos -99616 HETG Angle 80.6 PCADMODE NPNT RA 110.067 Bus V 30.40 SIM FApos -990 LETG Angle 4.5 PCONTROL NPNT Dec -31.436 Bus I 27.48 AOFSTAR GUID Roll 330.083 ACA Object FFFSSSSS Dither ENAB HRC-I HV OFF ACA ImFunc TTTTTTTT Dith Yang -19.10 Yaw Rate 0.20 HRC-S HV ON ACA CCD Temp -10.4 Dith Zang 14.43 Pitch Rate 0.11 OBSMode OBSV ACA Int Time 1.698 Roll Rate 0.05 Door OP ACT AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa -0.53 Batt 1 SOC 100.00% Avg HRMA Temp 70.61 FSS Beta -36.15 Batt 2 SOC 100.00% ACIS Stat7-0 64 Avg OBA Temp 50.89 SA Resolv 126.15 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 12.95 HRMA power 40.40 -Y SA Amps 14.10 EPHIN Geom LARG OBA power 67.40 +Y SA Temp 117.32 E1300 3 -Y SA Temp 118.05 P4GM 0 Roll Mom. 1.946 P41GM 0 Pitch Mom. -15.804 UpL Cmd Acc 35187 A-Leak 0.3080 Yaw Mom. -0.440 Cmd Rej A 130 B-Leak 0.0480 Expected RA, Dec, Roll (degrees): 110.07494, -31.43475, 330.08709 2) Chandra's state at 033:1500 was: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 83.615123 deg 83.61511 DEC = 22.032726 deg 22.03272 ROLL = -86.297091 deg -86.29864 Format = 1 1 OBSID = 759 759 SIM FA = -990 -991 SIM TSC = -98977 -98976 HETGA = 80.58 deg (OUT) OUT HETGB = 81.33 deg (OUT) OUT LETGA = 7.83 deg (IN) IN LETGB = 4.46 deg (IN) IN EPHIN A-leak = 0.3040 B-leak = 0.0480 ACE 2 HR Proton Fluence (130-214KeV) = 1.06E+5 LT 3.6E+8 HRC SP PS = ON IM PS = OFF SP Top Step = 90 Sp Bot Step = 102 Shield 1 HV = OFF Shield 2 HV = ON Shield 2 Stp = 8 Valid Event Rate 1 = 483 Valid Event Rate 2 = 498 Shield Event Rates = ~4300 ACIS FP Temp = -119.9 DEA Pwr = 45.3 DPA Pwr = 41.2 3) Did not attend 9:00am mtg due to ACA diagnostics mentioned in note 1 4) Quick Look data review: OBSID Target Time Comment ----- ------ -------------- ------- 00643 RX J0439.8-6809 2000:028:16 HRC-S/LETG observation. Looks OK. 00368 RX J0720.4-3125 2000:033:03 HRC-S/LETG observation. Has odd looking square of background events centered on 0th order image with dimensions sligntly larger than the illuminated channel plate width. Mike Juda notified.