Jul_14_2000_L357.txt Shift L357 Start at 2000:196:11:30:00 GMT = 2000 Jul 14 7:30am EDT End 2000 Jul 14 11:30am EDT SOT shift report 2000-07-14 L357 See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Jul_14_2000_L357.txt SOT Lead Bill Podgorski SOT SC/ACA FOT-SI HRC-SI ACIS-SI OTHER Plan: - Running JUL1300B. In radiation zone on downward leg towards perigee. Completed CTI meas 61996 just before COMM at 196:1200. ACIS now out of focus. Next COMM is at 196:1930 (3:30 EDT) and will be for 4hrs 20mins. ACIS squeegy mode testing (CAP 618) will be attempted then if radiation levels are OK. Next time ACIS is in focal plane is at 196:2316 for series of ovservations of comet LINEAR 1999 S4. Another COMM is at 197:0645. Radiation levels are high. Team should watch carefully and be prepared to execute SI safing if needed. ORBITAL EVENTS: 2000:195:08:49:25.365 129 EAPOGEE ORBIT APOGEE 2000:196:16:33:41.359 129 EPERIGEE ORBIT PERIGEE 2000:198:00:17:37.333 130 EAPOGEE ORBIT APOGEE 2000:199:08:02:44.101 130 EPERIGEE ORBIT PERIGEE 2000:200:15:45:59.833 131 EAPOGEE ORBIT APOGEE EVENTS DONE OBSID -------------- ---- ----- Start Shift 196:1130 Status at last COMM AOS DSS-24 196:1200 Status at AOS was nominal, see note 2, But camera losing star track often due to radiation hits. LOS DSS-24 196:1300 End of shift 194:1500 NOTES/ISSUES/PROBLEMS --------------------- 1) Status at end of last COMM: UTC 2000:196:04:10:01 (Jul14) f_ACE 4.47e+04 F_ACE 9.53e+09 Kp 1.7 R km 104234D OBT 2000:196:04:09:26 CTUVCDU 16044671 OBC s/w NRML FMT2_NORM CPEstat OBT 79934966.19 ONLVCDU 16044656 OBC Errs 0 OBSID 62876 EPState SUN SIM TTpos -99616 HETG Angle 80.2 PCADMODE NPNT RA 52.296 Bus V 31.34 SIM FApos -535 LETG Angle 78.3 PCONTROL NPNT Dec 31.305 Bus I 26.97 AOFSTAR GUID Roll 95.497 ACA Object SSSSSSSS Dither ENAB HRC-I HV ON ACA ImFunc NNNTTTTT Dith Yang 0.92 Yaw Rate -0.02 HRC-S HV OFF ACA CCD Temp -10.4 Dith Zang 7.22 Pitch Rate -0.04 OBSMode NEXT ACA Int Time 1.698 Roll Rate 0.10 Door OP UNAC AOACSTAT OK FSS SunBeta SUN Door CL UNAC FSS Alfa 0.10 Batt 1 SOC 100.00% Avg HRMA Temp 70.63 FSS Beta 34.49 Batt 2 SOC 100.00% ACIS Stat7-0 67 Avg OBA Temp 50.97 SA Resolv 54.22 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 12.95 HRMA power 0.00 SCS 128 -Y SA Amps 13.91 EPHIN Geom LARG OBA power 78.30 SCS 129 +Y SA Temp 107.90 E150 3632 SCS 130 -Y SA Temp 108.17 E300 254 Roll Mom. 8.540 E1300 4 Pitch Mom. -11.425 UpL Cmd Acc 54504 EPH A-Leak 0.3200 P4GM 106 Yaw Mom. 8.589 Cmd Rej A 235 EPH B-Leak 0.0520 P41GM 0 Expected RA, Dec, Roll (degrees): 52.29375, 31.30420, 95.49843 2) Chandra state at 196:1230: WAS EXPECTED PCAD MODE = NPNT NPNT CONTROL LAW FLAG = NPNT NPNT Stars: = 5 5 FIDS = 0 0 RA = 325.437484 deg 325.44000 DEC = 60.102267 deg 60.09999 ROLL = 150.886585 deg 150.88423 Format = 2 2 OBSID = 61996 61996 SIM FA = -467 -468 SIM TSC = -99616 -99616 HETGA = 80.21 deg (OUT) OUT HETGB = 80.58 deg (OUT) OUT LETGA = 79.46 deg (OUT) OUT LETGB = 78.33 deg (OUT) OUT EPHIN A-leak = 0.4120 B-leak = 0.0680 ACE Proton Flux = 51054 (2 hr avg in 130-214 keV proton channel) Fluence (130-214KeV) = 3.7E+8 LT 3.6E+8 Radiation Level OK Kp Index (Costello) = 3.67 LT 6 is OK EPHIN Geom = Inr RAD Zone E1300 = - LT 1318.52 (RADMON P4GM = - LT 3542.40 Triggers) P41GM = - LT 100.00 HRC SP PS = OFF IM PS = ON SP Top Step = 43 SP Bot Step = 52 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 Cold Radiator = -127.9 DEA Pwr = 0.0 DPA Pwr = 39.6 Science State = Science Idle 3) Notes from 9:00am meeting: Operations (Darrell): - 3 supports last 24 hrs, 3 good SSR dumps. - Running JUL1300B load, good thru 198:1140 - 2 CAPS run, 632 - Prep for squeegy, 625B - Mega Squeegy and 634 - squeegy cleanup - Two more supports upcoming nexe 24 hrs, 196:1930 (4 hrs 20 mins), and 197:0645 (1 hr) Mission Planning (Dan/Kevin/Ken): - Rebuilt load, JUL1300B. Also built a JUL14 load which was not used. - JUL16 load is ready for final review. Spacecraft Engineering (Jeff): - Saw a low SA current near time that SCS 107 was running. Will do some investigation and correllation. SOT (Bill Podgorski): - Want to run squeegy again (CAP 618) this afternoon if radiation permits. - Noted many star dropouts during 8am pass, due to ionizing radiation. Went down to 2 stars at one point. - Will be looking closely at radiation levels throughout the day. DSOPS(Joy): - One quick look (see below). - Noted problems with aspect solution on obsid 642, before SCS 107 was run. Joy will get back to Tom Aldcroft on this. GOT - All is OK. 3) Quick Look data review(OK unless noted): OBSID Target Time Comment ----- ------ -------------- ------- 01730 M33/ACIS-I 2000:194:08:12:53 Has a streak bleeding from a very bright source, in direction of charge transfer.