SSOC Tohban's Report for Week 41 ( 05-Oct to 10-Oct 1998) SSOC : Yoshida, Yamaguchi KSC : Hagino, Sasaki 1. Solar Activity Solar activity was moderate or sometimes high last week. Yohkoh observed two M-class flares and many C-class flares. On 7-OCT, two M-class flares and several C-class flares were occurred in AR 8355. ---------------------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded last week. ----------------------------------------------------------------- JST Day UT Start Time Pass Table ID ================================================================= Tuesday 05-OCT-98 21:01 4 981005 P4 ARS2 DARK+TRACE Wednesday 06-OCT-98 19:36 3 981006 P2 ARS2 DIF+TRACE # Intended for pass 2, uploaded on pass 3 Thursday 07-OCT-98 18:09 3 981007 P4 ARS2 TRACE Friday 08-OCT-98 20:10 4 981008 P4 ARS2 STD Saturday 09-OCT-98 18:44 4 981009 P4 ARS2 STD Sunday 10-OCT-98 19:01 4 981010 P4 ARS2 STD ----------------------------------------------------------------- 2.2 STT timer setting STT timer was set during pass 2 (981007-1133) on 07-OCT (Thursday UT). The next timer setting should be on 13-OCT (UT), Tuesday. ----------------------------------------------------------------------------- 3. Errors and Problems 3.1 BCS Errors None 3.2 SXT Errors Bitmap Error occurred at pass 981005-1136. It was cleared at the same pass with Yobi-command-C. 3.3 Terminal used for SXT table upload was hung up The terminal (PC FMV) of the mainframe at KSC was hung up just before the pass 2 on Wednesday. The SXT table which was scheduled to be uploaded on the pass was uploaded during the next pass ( pass 3 Wednesday ). According to Shuto-san (Mainframe Manager), there was no error on the mainframe and the network. The problem may be caused by the error on the local terminal software on the personal computer. 3.4 S3500 (Operation Computer at KSC) was hung up. S3500 was hung up at 16:10(UT) on 09-OCT-98. At that time, we were transmitting the data from S3500 to WS to check SXT images. We cut the power and reset the computer. 3.5 Lightning struck during a pass ! During the pass 981006-1343, one lightning struck KSC, and the power supply to A400 (Data Acquisition Computer) was stopped. 3.6 Transition From Yohkohsoft to Solarsoft at ISAS The software environment was slightly changed in the week 41. Some of softwares might not work correctly. The program 'DSN_CONFLICT' didn't work correctly with some errors. This problem was solved by Slater-san. ---------------------------------------------------------------------------- 4. Special Operations 4.1 HXT CAL HXT CAL was done on passes 981009-1031, 981010-1032 and 981010-1135. 4.2 New Spacecraft Normal Pointing The pointing data was updated at pass 2 on Tuesday (981005-1136). ---------------------------------------------------------------------------- 5. DSN Communications 5.1 DSN Schedule Passes were added/deleted as follows. ------------------------------------------------------------------- DSN Schedule Week Schedule Changes =================================================================== Final 41 No pass deleted Final 42 No pass deleted Preliminary 43 No pass deleted Strawman 44 71 passes deleted ------------------------------------------------------------------- 5.2 Data Transmission from DSN 261 16 2326 corrupted Requested 24 Sep no response tape Requested 28 Sep no response tape Requested 02 Oct no response tape Requested 07 Oct 265 46 1020 corrupted tape Requested 28 Sep corrupted tape Requested 02 Oct Closed/ correct data!(06-Oct) 266 46 1037 corrupted tape Requested 28 Sep corrupted tape Requested 02 Oct Closed/ Correct data!!(06-Oct) 269 76 1212 corrupted tape Requested 01 Oct Closed/ Correct data(05-Oct) 269 74 2057 corrupted tape Requested 01 Oct Closed/ Same data(08-Oct) 269 16 1853 not received Requested 02 Oct Closed/ No scheduled data(05-Oct) 270 76 1047 corrupted tape Requested 01 Oct Closed/ Correct data(05-Oct) 270 16 1911 corrupted tape Requested 02 Oct no response tape Requested 07 Oct 270 66 0556 corrupted tape Requested 02 Oct Closed/ Correct data(07-Oct) 271 66 0755 corrupted tape Requested 02 Oct no response tape Requested 07 Oct 272 76 1121 corrupted tape Requested 01 Oct Closed/ Correct data(05-Oct) 272 76 1303 corrupted tape Requested 01 Oct corrupted tape Requested 09 Oct 273 76 0955 corrupted tape Requested 09 Oct 279 76 0630 corrupted tape Requested 09 Oct 279 76 0812 corrupted tape Requested 09 Oct 279 76 0954 corrupted tape Requested 09 Oct (Refer to /home/flare1/yohkoh/dsn_corrupt/98_41) 5.3 ADD_DSN --- Quote from W40-98 SSOC Report --- The program ADD_DSN was improved to make it possible to have multiple additions requested. The idea now is to run this program on Friday, after the final schedule has been received and big gaps have been noticed. To deal with multiple requests, simply run ADD_DSN repeatedly; each time it will add one group of passes to the output (request) file. Adding groups gives DSN more flexibility. We ran this program on Tuesday on the Week 41 Preliminary schedule, generating the file sola_add.w41, which we ftp'd to Wallops. This seems to be preferable to waiting for the final schedule - our idea is that the schedulers can now have another iteration from us before making up the final. In this case, most of the passes in the 6 add groups (one dump requested per day) were the Madrid passes. The result for the Week 41 ADD request was the following: Of the six requested time intervals, we received one additional pass. This was not a DSN contact but a Wallops contact - DSS-82 (see below). This is our first experience with this DSS number and we have reported its appearance to Kato_sensei. In spite of this almost complete failure to fill in the gap between KSC and Wallops for Week 41, we feel that the attempt should be made again. We have had no direct e-mail communication with the Wallops schedulers about this, so presumably the ftp file was properly received and dealt with there. ------------------------------------ ---------------------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In week 42 (including sunday in week 43, next holiday is monday in week 43), 7 KSC passes were lost to Akebono, and 5 to Haruka. --------------------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 42 (12-Oct - 18-Oct) SSOC : Yoshida, McKenzie KSC : Sasaki, T. Morimoto (15-) 7.2 STT timer setting STT timer setting is due on Tuesday October 13. 7.3 Holiday Schedule The holiday will be Monday, October 19. 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. === END ===