SSOC Tohban's Report for Week 43 ( 19-Oct to 25-Oct 1998) SSOC : Nakakubo, Ishizaki KSC : Kouzu, Morimoto(-10/22) 0. Meeting Attendance Nakakubo, McKenzie, Miyashita, Akiyama Hudson, Khan, Kosugi, Hara ---------------------------------------------------------------- 1. Solar Activity Solar activity was high last week. Yohkoh observed many C-class flares. The number of C-class flare is 20 in this week. NOAA 8358 produced an C7.4 class flare on 21 October and this flare was the brightest flare in this week. Unfortunately, we can't watch the flare in PFI imges because the NOAA 8358 is almost behind the west limb. We can watch the flare in FFI images. -- C7 class flare -- 19-OCT-98 12:18 12:31 12:41 C7.1 1N N14W59 8361 20-OCT-98 20:30 21:03 21:48 C7.4 1N the NOAA 8358 ---------------------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded last week. ------------------------------------------------------------------------- UT Time (JST Time) Pass Table ID ========================================================================= 21-Oct-98 08:28 UT (Wed 21-Oct-98 17:28 JST) P4 "981020 P4 ARS1 DARK+TRACE" 22-Oct-98 10:26 UT (Thr 22-Oct-98 19:26 JST) P2 "981022 P2 ARS1 DIFF+TRACE" 23-Oct-98 09:01 UT (Fri 23-Oct-98 18:01 JST) P2 "981023 P2 ARS1 STD" 24-Oct-98 09:18 UT (SAT 24-Oct-98 18:18 JST) P2 "981024 P2 ARS1 STD" ------------------------------------------------------------------------- 2.2 STT timer setting STT timer was set during pass 4 (981020-1031) on 20-OCT (Tuesday UT). The next timer setting should be on 27-OCT (UT), Tuesday. ----------------------------------------------------------------------------- 3. Errors and Problems 3.1 BCS Errors No error reported. 3.2 SXT Errors # The new SXT table "981020 P4 ARS1 DARK+TRACE" was scheduled in the forth pass on Tuesday night (981020-1030), but this was not done in the pass because KSC Tohban was confused by the terminal error for SXT Table Upload. || \/ On wednesday, Oct 21, the same SXT table "981020 P4 ARS1 DARK+TRACE" was uploaded in the first pass (981021-0617) successfully except the SXT table check. In the forth pass, KSC Tohban tried to check the SXT table again (execute "SXT TBL RE") and SXT table check show error. || \/ Then Hugh Hudson-san searched whether SXT table was uploaded successfully or not. Before the last pass on wednesday he comfirmed the SXT table was uploaded successfully. # The new SXT table "981023 P2 ARS1 STD" was uploaded in the second pass (981023-0619). However KSC Tohban couldn't check the SXT table, Hugh Hudson-san comfirmed SXT table was uploaded safely. 3.3 SXT Table Transmission Error On Friday October 23, the SXT table "981023 P2 ARS1 STD" was transmitted by the SXT Chief Observer. But this table wasn't reached to MS operation computer for some unknown reason. The SXTCO tried again then transmission was succeeded. ---------------------------------------------------------------------------- 4. Special Operations None ---------------------------------------------------------------------------- 5. DSN Communications 5.1 DSN Schedule Passes were added/deleted as follows. ------------------------------------------------------------------- DSN Schedule Week Schedule Changes =================================================================== Strawman 45 60 passes deleted Final 43 No pass deleted Final 44 No pass deleted Preliminary 45 No pass deleted Strawman 46 66 passes deleted ------------------------------------------------------------------- 5.2 Data Transmission from DSN -(Refer to /home/flare1/yohkoh/dsn_corrupt/98_43)-------------- 272 76 1303 corrupted tape Requested 01 Oct corrupted tape Requested 09 Oct no response tape Requested 14 Oct no response tape Requested 19 Oct Closed/ correct data 273 76 0955 corrupted tape Requested 09 Oct no response tape Requested 14 Oct no response tape Requested 19 Oct Closed/ correct data 279 76 0630 corrupted tape Requested 09 Oct no response tape Requested 14 OCt no response tape Requested 19 Oct Closed/ correct data 279 76 0812 corrupted tape Requested 09 Oct no response tape Requested 14 Oct no response tape Reuqested 19 Oct Closed/ correct data 279 76 0954 corrupted tape Requested 09 Oct no response tape Requested 14 Oct no response tape Requested 19 Oct Closed/ correct data 279 82 0427 not received Requested 19 Oct Closed/ correct data 282 76 0538 not received Requested 21 Oct Closed/ correct data 282 76 0720 not received Requested 21 Oct corrupted tape Requested 23 Oct 282 76 0903 not received Requested 21 OCt corrupted tape Requested 23 OCt 282 76 1046 not received Requested 21 Oct corrupted tape Requested 23 Oct 283 76 0413 not received Requested 21 Oct corrupted tape Requested 23 Oct 283 76 0554 not received Requested 21 Oct Closed/ correct data 283 76 0920 not received Requested 21 Oct corrupted tape Requested 23 Oct 285 16 1127 not received Requested 19 Oct no response Requested 23 Oct 293 66 1937 not received Requested 23 Oct 293 66 2119 not received Requested 23 Oct ---------------------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In week 44 we will lose 4 passes to Akebono, 6 or 7 passes to HALCA. --------------------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 44 (26-October - 1-November) SSOC : Miyashita Akiyama/Shimojo/Takahashi KSC : Kozu(-27)/Torii(-3)/Hata 7.2 STT timer setting STT timer setting is due on Tuesday October 27. 7.3 Holiday Schedule The holiday in week 44 will be on Sunday, 1-NOV-98. 7.4 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 7.5 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 ===