SSOC Tohban's Report for Week 46 ( 9-Nov to 15-Nov 1998) SSOC : Shirts, Bargatze(-12), Canfield(+12) KSC : Ohyama, Kasahara 0. Meeting Attendance TBD Preliminary List: Ogawara, Kosugi, Sawa, Watanabe, Hara, Khan, Shirts, Bargatze, McKenzie, Suga, Ichimoto, Ishii ---------------------------------------------------------------------------- 1. Solar Activity Solar activity during week 46 decreased slightly from the level observed during the last week. Flares: 41 C-class flares and 4 M-class flares occurred in this week. The largest flare was an M-class 1.8 flare on 10-Nov which began at 15:40. KSC reported that Yohkoh SXT entered flare mode on 10 passes. NOAA regions: There were 6 NOAA regions (NOAA 8377, 8378, 8383-86) on the solar disk. ---------------------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded last week. ===================================================== UT Time Pass Table ID ===================================================== 09-Nov-98 01:48 UT P2 "981109 P2 ARS1 STD Ver2" 10-Nov-98 00:22 UT P2 "981109 P2 ARS1 DIFF" 10-Nov-98 03:48 UT P4 "981109 P4 ARS1 DARKCAL" 11-Nov-98 00:38 UT P2 "981110 P2 ARS1 STD" 11-Nov-98 23:12 UT P2 "981111 P2 ARS1 STD" 12-Nov-98 23:39 UT P2 "981112 P2 ARS1 STD" 13-Nov-98 23:45 UT P3 "981113 P3 ARS1 STD" 15-Nov-98 22:36 UT P2 "981115 P2 ARS1 STD" CANCELLED 2.2 STT timer setting STT timer was set during pass 2 (981110-0101) on 10-Nov (Tuesday UT). The next timer setting should be on 17-Nov (UT), Tuesday. ---------------------------------------------------------------------------- 3. Errors and Problems 3.1 BCS Errors On 12-Nov-98, Pass ID 981112-0309, the KSC tohbans noticed a BCS error. The KSC tohbans reported that the error was recovered on the same pass. 3.2 SXT Errors On 13-Nov-98, Pass ID 981113-1341, the KSC tohbans noticed a SXT bit map error. The KSC tohbans executed a YOBI command C and they reported that the error was recovered on the same pass. Now, SXT is working normally. 3.3 BDR Anomaly None ---------------------------------------------------------------------------- 4. Special Operations None ---------------------------------------------------------------------------- 5. DSN Communications 5.1 DSN Schedule Passes were added/deleted as follows. ------------------------------------------------------------------- DSN Schedule Week Schedule Changes =================================================================== Final 46 2 passes deleted by DSN. Final 47 1 pass deleted by DSN. Preliminary 48 12 passes deleted & 1 added by DSN. Strawman 49 98 passes deleted ------------------------------------------------------------------- 5.2 Data Transmission from DSN -(Refer to /home/flare1/yohkoh/dsn_corrupt/98_46)-------------- 299 66 1613 not received Requested 02 Nov Closed/ correct data 300 16 2302 corrupted tape Requested 02 Nov no response tape Requested 05 Nov no response tape Requested 10 Nov no response tape Requested 12 Nov 300 76 2302 corrupted tape Requested 05 Nov no response tape Requested 10 Nov Closed/ correct data 310 76 1535 corrupted tape Requested 10 Nov no response tape Requested 12 Nov 313 76 1300 corrupted tape Requested 10 Nov Closed/ same data ---------------------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In week 47, we will lose 3 passes to ASCA. ---------------------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 47 (16-Nov -- 22-Nov) SSOC : Ichimoto, Ishii KSC : Kasahara, Yashiro 7.2 STT timer setting STT timer setting is due on Tuesday, November 17. 7.3 Holiday Schedule The holiday in week 47 will be on Sunday, 21-Nov-98. 7.4 Measures of Leonid Streamer Computations predict that the meteor stream of Leonids occurs on 18-Nov-98. We will turn off the HXT and the WBS. Tsuneta and Acton will decide what to do with SXT, and Watanabe and Culhane will decide what to do with BCS. 7.5 Manual and Checksheet A new version of the English Tohban Manual was generated during week 98_36, along with a corresponding new Tohban Checksheet. The new (and all future) Tohbans are requested to note any changes or mistakes in the manual, and to notify A. Sterling of any changes. If the changes involve the DSN procedures or the ~yohkoh/wallops/README file, Hugh Hudson san should also be notified. Current Version Yohkoh Tohban Duties Manual rev. 4-Sep-98, A. Sterling README(Manual for Wallops/DSN Operation ver. 5.2 28-Sep-98 H. Hudson 7.6 Some Problems in OP_FIRST_GUESS In some cases, OP_FIRST_GUESS fails to pick up DSN passes. (See Section 8) Tohbans should check OPs and DSN schedules carefully. ---------------------------------------------------------------------------- 8. Action Items 8.1 Further software development. Status CONTINUING. It would be greatly appreciated if the SSOC tohbans could recommend any software development that they think will save future tohbans time and which improves the reliability of their work. 8.2 Week-48-A/I-1 /Hudson/status AJAR. PRINT_OGALL still does not work well. Hudson will fix it next. 8.3 Week-37-98-AI??-1 / "Possible OP_FIRST_GUESS Problem." / ?? / status ?? --- Quote from W37-98 SSOC Report --- OP_FIRST_GUESS failed to pick up a couple of passes from the solass.w37 DSN schedule last week. Here is an example: . . 251 2159 2224 2238 2248 DSS-76 SOL R TKG PASS 8036 xxxxxx- xxx *---------- *WED 09 Sep *---------- 252 2342 0007 0020 0030 DSS-76 SOL R TKG PASS 8037 xxxxxx- xxx 252 0125 0150 0201 0211 DSS-76 SOL R TKG PASS 8038 xxxxxx- xxx 252 1852 1917 1929 1939 DSS-76 SOL R TKG PASS 8049 xxxxxx- xxx In this case, the missed pass was the one beginning at 0007. The problem seems to be that the DSN START time and the BOT times are for different DOY dates. We edited the solass.w37 file so that this line read: 251 2342 0007 0020 0030 DSS-76 SOL R TKG PASS 8037 xxxxxx- xxx OP_FIRST_GUESS then was able to pick up this pass. The other pass that OP_FIRST_GUESS missed had a similar form and was handled in the same way. We notified Jim Lemen of this problem. He hopes to look into this problem over the next couple of months. In the meantime, Tohbans will have to be on the lookout for this sort of problem. (Thanks go to Asizawa-san, who first noticed the missing pass even though he is "green" and was working alone at KSC.) We wonder if this problem has occurred in the past?? ---------------------------------------------------------------- 8.4 Week-38-98-AI??-1 / "Possible OP_FIRST_GUESS Problem 2." / ?? / status ?? Although the newest version of DSN final schedule is ./solarss.w39.# (#= version number), the OP_FIRST_GUESS uses ./solarss.w39 . This problem is not severe but better to be fixed. 8.5 Week-40-98 / Wallops file version number / Hudson/ OPEN Revised Wallops scheduling files now have extensions in their names. For example, the revised strawman.w43 is called strawman.w43.1. Some of our software gets confused and needs to be patched. 8.6 Week-42-98 / Mainframe Terminal for SXT TABLE UPLOAD / H. Hara / OPEN --- Quote from W42-98 SSOC Report --- The terminal of the mainframe computer at KSC was unstable last week. We failed to upload the table plan on Monday because of the logon error on the terminal. The running table on Monday was standard one, so there was no problem. The terminal was tuned by Fujitu Engineer on Tuesday night, and that works well now. But we should get a new stable terminal. === END ===