SSOC Tohban Report for Week 41 (07 Oct. - 14 Sep. 1996) SSOC: S. Yasuno and K. Yoshimura KSC : K. Nakakubo and K. Ichimoto Meeting Attendance ---------------- L.Acton, H.Hudson, A.Sterling, G.Slater, S.Savy, Te.Watanabe, Y.Ogawara, M.Sawa, H.Hara, T.Shimizu, H.Imai, K.Yoshimura, S.Yasuno 0. Action Items ------------------- 1. Solar Activity ---------------- Solar activities were remained low, having been around A-class level through the week. 2. Standard Operation ---------------- 2.1 SXT Table Uploads --------------- ------------------------------------------------------------ Pass ID Pass # Table ID ------------------------------------------------------------ 961007-0618 4 961007 P4 ARS0 STD+LONG 961008-0412 3 961008 P3 ARS0 DKCAL 961009-0205 1 961009 P1 ARS0 BAKE 961010-0516 5 961010 P5 ARS0 STD+DIFF 961012-0207 3 961012 P3 ARS0 STD+LONG ------------------------------------------------------------ 2.2 STT timer setting ---------------- The STT timer was set once during this week, pass 2 (2nd operation of 08-OCT-96 JST (961008-0308) 2.3 Spacecraft offset pointings ----------------------------------------------------------------------- OP-Date Time(UT) S/C PTG. OG# Time(UT) S/C PTG. OG# ----------------------------------------------------------------------- 08-Oct-96 04:15:11 W5.12 N.023 85 04:22:39 Normal 32 07:29:51 W5.12 N.023 85 07:44:47 Normal 32 15:35:43 W5.12 N.023 85 15:14:31 Normal 32 09-Oct-96 01:19:11 W5.12 N.023 85 01:24:31 Normal 32 ----------------------------------------------------------------------- 2.4 SXT CCD BAKE The SXT bakeout operation was successfully carried out for one day (9-Oct => 10-Oct). 3. Errors and Problems ---------------- 3.1 BCS Errors ---------------- BCS errors were found twice during Week 41. These errors were removed with no problems after using normal BCS recovery plan. ---------------------------------------------------------------- Date(JST) Pass No. Pass ID Recovered in ---------------------------------------------------------------- 10-Oct-96 5 961010-0516 961011-0103(next day) 11-Oct-96 4 961011-0413 961011-0413(same pass) ---------------------------------------------------------------- 3.2 SXT Errors ---------------- No errors were detected. 4. DSN Communications ---------------- 4.1 DSN Final schedule for W41 ---------------- No cancellation. 4.2 DSN Final schedule for W42 ---------------- 4 passes were cancelled. 4.3 DSN Preliminary schedule for W43 ---------------- 29 passes were cancelled. 4.4 DSN Strawman schedule for W44 ---------------- 43 passes were cancelled. 16 passes of them were due to ASCA conflicts. 4.5 Data Transmission from DSN ---------------- 252 46 0615 not received Requested 17 Sep. not received Requested 07 Oct. Closed/give up 254 76 0734 not received Requested 12 Sep. Closed/correct data 258 76 1034 not received Requested 17 Sep. Closed/correct data 270 76 2248 28% less than expected Requested 01 Oct. Closed/correct data 273 74 1528 not received Requested 07 Oct. Closed/correct data 274 76 2246 not received Requested 08 Oct. Closed/correct data 276 76 0048 not received Requested 08 Oct. 276 76 1959 not received Requested 08 Oct. 276 76 2324 not received Requested 08 Oct. Closed/correct data 276 16 0222 2% less than expected Requested 11 Oct. 276 16 0404 8% less than expected Requested 11 Oct. 278 16 0117 2% less than expected Requested 11 Oct. 278 16 0259 4% less than expected Requested 11 Oct. 279 16 0136 5% less than expected Requested 11 Oct. 5. Yohkoh/ASUKA/AKEBONO Pass Conflicts at KSC ---------------- 4 passes were given to ASCA, and 6 passes to AKEBONO in W41. 3 passes are scheduled to be given to ASCA, and 4 passes to AKEBONO in W42. 6. Special Operations ---------------- None 7. Holiday Schedule ---------------- The next KSC holiday is Sunday, 20-Oct-1996 JST. 8. Hikitsugi Items ---------------- 8.1. Tohbans for W42 SSOC: H.Imai and T.Shimizu KSC: K.Ichimoto and T.Yoshida 8.2. STT Timer setting The next setting is due on Pass 3, Tuesday, 15-Oct-96 JST. 8.3 Today's Operations. The OP for today was uploaded successfully aroud 8:00 JST. Today's operation does not have anything special. 8.4 Sirius Data Nothing to report. 8.5 OP_first_guess Recall the warning from the previous reports. The op_first_guess fails to switch the KSC LOS quiet high (QT HI) to the medium (QT ME) mode of OP plan in the next day operation when KSC pass2 is cancelled. Tohbans should pay attention to this when checking the OP and change it manually. New Bug report!! (Week 39, Shimojo) The op_first_guess fails to include SXT CAMP OBS in quiet medium for SAA zone. Tohban should change the rate mode or delete SXT CAMP OBS operations. 8.6 Week-35-A/I-1 /Ogawara/ status: OPEN Prof. Ogawara will ask Fujitsu to check the health of S-3500 located at KSC, because of the increased number of the problems. Hara san is working on investigation of the cause of the probrems. Week-35-A/I-3 /Shimizu, Hara/ status: CLOSE The workstation flare 5 currently located at SSOC should be returned to KSC for operational use. The failed display of the flare 5 currently located at KSC should be sent to SSOC for repair. 8.7 Mismatch of pass ID number between MS at KSC and SSOC KSC reported a problem of mismatching between pass ID numbers from SSOC and those given by MS computer at KSC. SSOC should know that "op_first_guess" can give us pass ID numbers different from those in the Visible Diagram, and be carefully check the pass ID when preparing OPs and Command Sheets. The Pass ID in Visible Diagram is the right one that should be used in operations.