@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ @ @ MTA Monitoring Report 7/28/00 - 8/10/00 @ @ @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ The July Monthly report is now available http://asc.harvard.edu/mta/REPORTS/MONTHLY/2000JUL/MONTHLY.html Archive of Monthly reports http://asc.harvard.edu/mta/REPORTS/MONTHLY Archive of all weekly reports http://asc.harvard.edu/mta/REPORTS/weekly.html ************ Radiation ************* On Sat, 29 Jul 2000 08:51:02, a radiation violation of the USAF Kp index occurred. Value = 6.00 (limit: Kp=6) On August 10 at 6:06 EST A Radiation violation of the COSTELLO predictive Kp index occured. Value = 5.67 (limit: Kp=5.5). Although Fri, 11 Aug 2000 is out of this period, we got a couple of violation before sending out this report: 02:36:07, a radiation violation of the USAF Kp index occured. Value = 6.33. 08:51:02, a radiation violation of the USAF Kp index occured. Value = 6.67. (see: http://asc.harvard.edu/mta/ace.html) ************ CTI trend ************* Due to Squeegy tests, CTI drops were observed for ccd6 on 7/27/00, and for ccd0 on 7/30/00. CTI for all CCDs, especially ccd 8 and 9 on 08/05 and 08/07, are slightly higher for the latter half of this period due to higher focal plane temperature. *********** ACIS Focal Temperature ******** For this period, five peaks are observed Day (DOY) Temp (C) Width (DAY) 210.0 -111.3 0.27 212.3 -111.3 0.28 215.3 -110.7 0.30 218.9 -110.8 0.32 220.1 -108.9 0.35 According to C. Grant (cgrant@space.mit.edu), the focal plane temperature are expected to stay high for a month. ************** MTA Problem Tracking ***************** Two misd warnings are reopened: ES1P5CV: ES-1 +5V CONVERTER VOLTAGE (Sub) 2DRLSOP: DOOR LIMIT SWITCH OPEN (HRC) The following msids are keep coming: CIUB5V, CIUB15V, C28VMONB, AIOBP5CV, CUSOB28V, 2LLDIALV, 2RSRFALV, 2RSRFALV,1DPDBBON,ASPEB5CV,AGWS2V ******** Trending *********** Spacecraft temperature TSAMYT and TSAPYT now clearly show annual sine curve. ************* Telemetry *********** In pcad reaction wheel group, AORWSPD1 peaked to 449.53 on 7/31/00, and AORWSPD6 to -435.23 on 8/1/00. Both were almost reached an MTA red warning zone. TSCIUSF1 (SC-IUS FITTING-1 TEMP) of spacecraft temperature reached a yellow warning zone (348.12) on 7/30/00. OHRTHR38 of OBA Thermal is now consistently in a yellow zone (around 287). *********** Photon Page ************ MSID DETECTOR GRATING TARGET ANALYSIS - --------------------------------------------------------- 79 ACIS-S NONE NGC 6397 OK 416 ACIS-S NONE NGC 6500 OK 1808 ACIS NONE M87 OK 621 ACIS-I NONE OPHIUCHI MOSAIC#9 OK 932 ACIS-S NONE 1WGA J0S44.2+5031 OK 352 ACIS-S NONE M87 OK 545 ACIS-I NONE A2163 OK 906 ACIS-I NONE ABELL 1995 OK 922 ACIS-S NONE A2597 OK 931 ACIS-I NONE ABELL 496 OK 499 ACIS-I NONE A2204 OK 654 ACIS-I NONE TERZAN 5 OK 730 ACIS-I NONE KES 73 OK 311 ACIS-I NONE M31 TRANSIENT OK 865 ACIS-S NONE Q 0054+144 OK 914 ACIS-I NONE CLJ0542.8-4100 OK 899 ACIS-I NONE ABELL 3266 OK 1796 ACIS LETG PKS2155-304 GRATING ANL NOT AVL YET 1798 ACIS LETG PKS2155-304 GRATING ANL NOT AVL YET 1797 ACIS LETG PKS2155-304 GRATING ANL NOT AVL YET 950 ACIS-I NONE GX 13+1 OK 1795 ACIS LETG PKS2155-304 GRATING ANL NOT AVL YET 1709 ACIS NONE V1494 Aql OK 780 ACIS-I NONE G11.2-0.3 OK 109 ACIS-I NONE GX 5-1 OK 918 ACIS-I NONE CLJ2302.8+0844 OK 888 ACIS-I NONE ELAIS:N1.1 OK 887 ACIS-I NONE ELAIS:N1.2 OK 952 ACIS-S NONE TOO SUPERNOVA (B3) OK 1807 HRC-I NONE VEGA OK 1806 HRC-S NONE VEGA OK 1805 HRC-S NONE VEGA OK 674 HRC-I NONE LILLER 1 OK 1829 HRC-S NONE SNR -538-69.1 OK ******** Notes from experts *************** HRC-S plate scale - ----------------- Maxim Markevitch The plate scale is not usefully constrained for gratings purposes, it is consistent with both the nominal value and the 0.05% smaller pixel size derived for HRC-I (these observations were not supposed to result in such accuracy when they were planned). The outer plates need to be shifted, the chip_id=3 plate by 3" and the chip_id=1 plate by 1.5". There is a memo with the analysis of the reprocessed HRC-S boresight data; http://icxc.harvard.edu/cal/platescale/hrcs_scale.html (a password is required).