SSOC Tohban Report for Week 36 (30-Aug-99 -- 5-Sep-99) SSOC: M. Miyashita, Te.Watanabe KSC: M. Hata, Y. Suematsu 0. Meeting Attendance J.Khan, T.Kosugi, M.Miyashita, N.Nitta, T.Sakao, M.Sawa, Te.Watanabe -------------------------------------------------------------- 1. Solar Activity Activity went down last week. The background level decreased from C2 - B7. An M-class flare occurred on 31-Aug -------------------------------------------------------------- 2. Standard Operations 2.1 SXT Table Uploads The following SXT tables were uploaded during week 36: ===================================================== JST Date Pass Table ID ===================================================== 31-AUG-99 06:00 3 990831 P3 ARS1 DARK 01-SEP-99 02:49 1 990901 P1 ARS1 DIFF 01-SEP-99 07:57 4 990901 P4 ARS1 STD 02-SEP-99 04:46 3 990902 P3 ARS1 STD 03-SEP-99 01:36 1 990903 P1 ARS1 STD 04-SEP-99 03:31 3 990904 P3 ARS1 STD ===================================================== 2.2 STT Timer setting STT timer was set during Pass 3 of 31-Aug-99. The next Timer Set is due on Tuesday, 7-Sep-99 (UT). -------------------------------------------------------------- 3. Special Operations 3.1 Change of flare-trigger level Flare-trigger level of SXS was changed at the first KSC contact on 23 Aug. Level was changed into 255 cnt/s from 127 cnt/s. This setting continued the whole last week. The flag was set for a C9 flare on 31.Aug. 3.2 BCS calibration 3.2 BCS calibration BCS source cal and STIM cal were conducted on 3-Sep. -------------------------------------------------------------- 4. Errors and Problems 4.1 BCS Error None 4.2 SXT Error An INVALID MAIL error occurred at pass 1 on 30-Aug (990830-0309) and was recovered at pass 4, the same day (990830-0619). 4.3 DSN Final Schedule Format. The DSN Final Schedules since w35 were not readable by op_first_guess in its original form. This is the same problem which has been reported for these weeks. There are 5-digit numbers in PASS NO. column of final schedule. Once the leading "4" is manually removed, the problem was fixed. The situation was the same last week. -------------------------------------------------------------- 5. NASA Station Scheduling 5.1 Contact pass cancelations/additions The following DSN/NASA passes were added/deleted: =================================================================== DSN/NASA Schedule Week Schedule Changes =================================================================== Real-time 36 0 cancelations by SSOC Final 37 0 cancelations by SSOC Preliminary 38 13 cancelations by SSOC Preliminary 38 1 addition requested by SSOC Strawman 39 73 cancelations by SSOC + Seko-san =================================================================== 5.2 Data Transmission from NASA Ground Stations -(From /home/flare1/yohkoh/dsn_corrupt/99_36)--------------- 232 80 0543 corrupted tape requested 26-Aug no response tape requested 26-Aug Closed/ same data 232 74 1609 corrupted tape requested 26-Aug Closed/ correct data 235 46 1620 missing requested 26-Aug same data requested 30-Aug no response requested 01-Sep 236 66 1913 missing requested 26-Aug same data requested 30-Aug no response requested 01-Sep 238 46 1519 missing requested 30-Aug no response requested 01-Sep 239 80 1940 corrupted tape requested 01-Sep Closed/ correct data 240 80 2135 corrupted tape requested 30-Aug corrupted tape requested 03-Aug 241 80 2332 not received requested 02-Sep Closed/ correct data 242 80 2021 corrupted tape requested 02-Sep Closed/ same data DOY-243 1711-1721 15297 blocks: Data degraded for first 2 minutes due to bad acquisition Data. Modulation was on at AOS. +8 seconds of time bias. -------------------------------------------------------------- 6. KSC Pass Conflicts and Schedule In Week 36, 9 KSC contacts were lost, 9 to ASCA. In Week 37, 10 KSC contacts will be lost, 10 to Asuka. Note: For future weeks, it would be nice if Yohkoh could get passes 4 and 5 prior to each weekend operation, and passes 1 and 2 immediately following. Doing this would allow us to retain the maximum number of NASA passes through the weekend. -------------------------------------------------------------- 7. Hikitsugi Items 7.1 Tohbans for week 37 SSOC: K.Akita, M.Sawa KSC: Y. Suematsu, W. Yoneshima 7.2 STT timer setting The next STT TIMER SET is due on 7-Sep-99 (UT). 7.3 Holiday Schedule Next Yohkoh holiday will be Sunday, 12-Sep-99 (UT). 7.4 Final Schedule Format Take note of the format of the w37 Final Schedule as discussed in Section 4.3 above. ------------- The Following is Unchanged from Last Week -------------- 7.5 Tohban Manual The English-language version of the Tohban Manual was updated; only minor changes were required. A corresponding checksheet was also generated. 7.6 Software problems pr_gev with /hc keyword produces a temporary output file but does not print it at the printer. 7.7 If possible, please schedule terminator opportunities on any weekend table (i.e., if room permits). 7.8 KSC pass conflicts ASCA conflicts cause the loss of about 10 KSC contacts per week at this time. We do not know which contacts Yohkoh will lose until the weekly meeting. Santiago contacts occur on the same orbits as KSC contacts. Therefore, keep as many Santiago contacts as possible in the DSN Strawman and Preliminary Forecasts. 7.9 Command glossary We need a shorthand glossary for common OP and command-sheet commands. This already exists pretty much in the Sakao manual in Japanese, and the Week 26 tohbans started accumulating an English version on "yohkoh.glossary" === END ===