SSOC Tohban's Report for Week 47 ( 16-Nov to 22-Nov 1998) SSOC : Ishii, Ichimoto KSC : Kasahara, Yashiro 0. Meeting Attendance No WOM. (Ishii, Ichimoto, Khan, Weber) ---------------------------------------------------------------------------- 1. Solar Activity Solar activity during week 47 was mostly low. Flare: X3 flare at NOAA 8384 (start 22-NOV-98 06:30 UT) ---------------------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded last week. ===================================================== UT Time Pass Table ID ===================================================== 15-NOV-98 22:36 2 981115 P2 ARS1 STD 16-NOV-98 22:52 3 981116 P3 ARS1 DARK+LEO 18-NOV-98 00:52 4 981117 P4 ARS1 STD+LEO 18-NOV-98 20:00 2 981118 P2 ARS1 STD 19-NOV-98 20:16 2 981119 P2 ARS1 DIFF 19-NOV-98 23:42 4 981119 P4 ARS1 STD 20-NOV-98 18:51 2 981120 P2 ARS1 STD+TRACE 2.2 STT timer setting STT timer was set during pass 2 (981116-1343) on 17-Nov (Tuesday JST). The next timer setting should be on 24-Nov (JST), Tuesday. STT timer should be turned off in 25-Nov (JST), Wednsday. ---------------------------------------------------------------------------- 3. Errors and Problems 3.1 BCS Errors None. 3.2 SXT Errors None. 3.3 BDR Anomaly None. ---------------------------------------------------------------------------- 4. Special Operations HV operation for safety during the Leonids storm. 17-Nov (Tue) (1) 981116-1239: New OGs were generated for HXT/WBS HVs off and for DAY during the Leonids storm. The OP uploaded at the same pass was programmed to execute HXT/WBS HVs off at 17-Nov 9:28:11UT, and to keep BCS HVs reduced after the following s/c dusk. (2) 981117-0102: The OG for HXT/WBS HVs off was successfully tested at the fourth pass and all of the thirteen HVs of these instruments were turned on again. 18-Nov (Wed) (3) At around 17-Nov 18:15UT, IAU Circular No. 7052 reported that the Leonids storm came earlier than expected, around 17.2d-Nov. As the OP worked properly, it was anticipated that HVs of the scientific instruments were still on at the peak of the Leonids storm. (4) 981117-1340 to 981118-0102: The HV status of HXT/WBS and BCS were confirmed OFF and RED via SAQL. Other important status/figures of the common instruments were also carefully checked and no anomalous behaviour was found. (5) 9811-0206: The performance of BCS HVs was tested and confirmed as normal. These HVs was chopped off at the following s/c dusk. 19-Nov (Thr) (6) 981118-1237: Thirteen HVs of WBS/HXT were switched on and showed normal performance. The ordinary DAY OG was resumed in the OP uploaded at the first pass. The performance of the common instruments was found all right. (7) 981118-1340: BCS HVs were turned on at the s/c dawn by DAY-OG as in the procedure of normal operation. The Leonids measurement operation finished with no troubles at this point. Many thanks for your cooperation during the Leonids operation. ---------------------------------------------------------------------------- 5. DSN Communications 5.1 DSN Schedule Passes were added/deleted as follows. ------------------------------------------------------------------- DSN Schedule Week Schedule Changes =================================================================== Final 47 2 passes deleted Final 48 2 pass deleted Preliminary 49 54 passes deleted Strawman 50 88 passes deleted ------------------------------------------------------------------- 5.2 Data Transmission from DSN -(Refer to /home/flare1/yohkoh/dsn_corrupt/98_47)-------------- *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 no response tape Requested 16 Nov Closed/ No data 310 76 1535 corrupted tape Requested 10 Nov no response tape Requested 12 Nov no response tape Requested 16 NOv Closed/ correct data 314 80 1458 corrupted tape Requested 18 Nov Closed/ same data 316 80 1531 corrupted tape Requested 18 Nov Closed/ same data 320 76 1312 not received Requested 18 No Closed/ correct data *DOY-300 G16 2302--(CDR email) There is no data for the requested time frame. There was a DR written G04223 - Bad Antenna predicts, no data. ---------------------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In week 48, we will lose 4 passes to ASCA. ---------------------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 48 (23-Nov -- 29-Nov) SSOC : Weber, Khan KSC : Yashiro, Yokoyama(24-) 7.2 STT timer setting STT timer setting is due on Tuesday, November 24. STT timer stop is due on Wednsday, November 25. 7.3 Holiday Schedule The holiday in week 48 will be on Sunday, 29-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. 7.6 DSN Santiago Station DSN Santiago Station(#74) has been not available since 1 Oct. 1998. 7.7 GRS and HXT CAL Schedule PASS ID ================================== GRS CAL : 981122-1136 981123-1133 981123-1236 981124-1134 981124-1237 981125-1133 HXT CAL : 981128-0929 981128-1032 981128-1136 ---------------------------------------------------------------------------- 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 ===