Mar_15_2000_L236.txt Shift L236 Start at 2000:075:12:30:00 GMT = 2000 Mar 15 7:30am EST End 2000 Mar 15 12:00pm EST See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Mar_15_2000_L236.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running Mar1200D, observation 00629, ACIS-S/HETG, HD 68273. ORBITAL EVENTS: 2000:073:17:23:59.009 83 EAPOGEE ORBIT APOGEE 2000:075:01:08:50.767 83 EPERIGEE ORBIT PERIGEE 2000:076:08:52:44.145 84 EAPOGEE ORBIT APOGEE 2000:077:16:37:57.693 84 EPERIGEE ORBIT PERIGEE 2000:079:00:20:57.806 85 EAPOGEE ORBIT APOGEE 2000:080:08:05:28.665 85 EPERIGEE ORBIT PERIGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift AOS DSS-16 (Goldstone) 075:1230 629 Chandra status at start shift was nominal (see note 1) LOS DSS-16 075:1320 End of shift 075:1700 NOTES/ISSUES/PROBLEMS --------------------- 1) Chandra's state at 075:1230 was: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 3 3 RA = 122.353138 deg 122.35312 DEC = -47.332636 deg -47.33263 ROLL = 300.095471 deg 300.09548 Format = 2 2 OBSID = 629 629 SIM FA = -467 -468 SIM TSC = 74423 74424 HETGA = 6.71 deg (IN) IN HETGB = 6.33 deg (IN) IN LETGA = 80.58 deg (OUT) OUT LETGB = 79.08 deg (OUT) OUT EPHIN A-leak = 0.4440 B-leak = 0.0680 ACE Proton Flux = 20 (2 hr avg in 130-214 keV proton channel) Fluence (130-214KeV) = 1.4E+5 LT 3.6E+8 Radiation Level OK EPHIN Geom = LARG E1300 = 6 LT 1318.52 (RADMON P4GM = 0 LT 118.08 Triggers) P41GM = 0 LT 100.00 HRC SP PS = ON IM PS = OFF SP Top Step = 43 SP Bot Step = 54 Shield 1 HV = OFF Shield 2 HV = ON Valid Event Rate 1 = 0 Valid Event Rate 2 = 0 Shield Event Rates = 3800 ACIS FP Temp = -119.7 Cold Radiator = -127.9 DEA Pwr = 53.6 DPA Pwr = 42.8 2) Notes from 9:00am meeting: Operations (Darrel Wicker): - 3 supports yesterday, 3 dumps - Uplinked another load segment, onboard loads good thru day 79:1603 - Eclipse #8 this cycle day 75 hr 02. All nominal. - CAP 587 run to test SCS 105. All was OK. Mission Planning (Kevin Marsh/Ken Gage): - March 19 load products will be out for review today. First review planned for late today. - Discussion of bad downlink during Monday AM pass. Ken discovered that it as due to blockage of LGA-B by solar array. This was due to co-ordinate system origin definition problem in the OFLS. Easiest way to fix this would be to re-enter the LGA co-ordinates in the currently implemented OFLS frame, thus avoiding a code change. This would be a characteristics change. Options to fix will be discussed before implementation. Bill Davis to contact Huntsville about this. Spacecraft Engineering: - All is OK. SOT (Bill Podgorski): - Radiation is very low. ASCDSOPS(Jen Lauer): - 3 quick looks available (see below) GOT(Mike Ambrose): - IDR file 33622 downlinked 74:1503-1551 has large gap. - Summary of these IDR file statistics can be found at: http://icxc.harvard.edu/dsop/Dump_Sum.htm 3) Quick Look data review: OBSID Target Time Comment ----- ------ -------------- ------- 00733 CYGNUS LOOP WEST 2000:073:16:55 ACIS-I. looks ok. 00365 CIRCINUS GALAXY 2000:074:05:51 ACIS-S, looks ok. 00002 ALGOL 2000:072:18:10 HRC-S + LETG, looks ok.