@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ @ @ MTA Monitoring Report 4/14/00 - 4/20/00 @ @ @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ************ CTI trend ************* No changes are observed. Imaging CCDs, Spec. CCDs, and BI CCDs averaged plots are added. ************** MTA Problem Tracking. ***************** Problem tracking program still has problems. It will be corrected as soon as possible. ******** Trending *********** Some of msids of Ephin Temperature/Voltage and OBA/HRMA thermal which had upward trends now display downward trend. ************* Telemetry *********** Although they seem not serious, there are a few red and yellow warning which have never happened before. All of them happened on 4/15/00. ACIS Electronics A: 1DEP0AVO: 0.72% red; clustered red jump to 0 SIM Thermal: BOXTEMP: 4.16% yellow; a peak reaches yellow Spacecraft Temperatures: TSCIUSF1: 2.82% yellow; a peak reaches yellow (348.12) HRMA Thermal: 4RT579T: 0.72% red; a clustered red jump Also space craft engineering reported that the B side XMTR power output limit tripped (69.945 --- 69.9 limit). It seems that the limits are too tight and is not cause for concern. *********** ACIS Focal Temperature ******** Acis focal plane temperature peaked three times: Day (DOY) Temp (C) 106.9 -107 109.6 -108 112.1 -107 *********** Photon Page ************ BSID DETECTOR GRATING TARGET ANALYSIS --------------------------------------------------------- 797 ACIS-S NONE NGC 4631 OK 362 ACIS-S NONE Q0957-561 OK 540 ACIS-I NONE A1689 OK 635 ACIS-I NONE RHO OPH CORE OK 891 ACIS-I NON A2029 OK NICE PIC 429 ACIS-S NONE NITG J2019+127 OK 760 ACIS-I NONE IC443 OK 20 ACIS-S NONE HD 37001 OK 619 ACIS-I NONE OPHICHI MOSAIC#2 OK 413 ACIS-S NONE NGC5055 OK 959 NO INFORMATION OK 102 ACIS-S HETIG VELA X-1 OK