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        @    MTA Monitoring Report 5/05/00 - 5/18/00    @
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Due to remus problems, some processed data are lost, possibly permanently. 
Currently, many of the mta monitoring data sets are on a process of rebuilding.
As of May 18 (assuming up to 5/1 is backed up on a tape),

MTA Task	Missing?			Location
------------------------------------------------------------
MTA monitoring	5/2-5/4				/data/mta/www/mp_reports
MTA CTI		several holes.			/data/mta/www/mta_temp/mta_cti
MTA focal temp	recovered			/data/mta/www/mta_temp/mta_fp
MTA trending	possibly some missing spots	/data/mta/www/mta_temp/mta_trends
MTA states	no damages			/data/mta/www/mta_temp/mta_states

All /mta_trend/... are temporary directories. After recovered data and/or backup
tapes are restored onto disks, they will be integrated back to the original locations. 
Note, some of the processes are now manually run, and won't be updated on  5/20 and 
5/21. 



             ************ CTI trend *************

No major changes are observed.

Software Note:
* There are several holes in data. This could be due to a format change in input data.
  
* Ti Ka of CCD4 shows significant drop on the last day. This, however, seems to be
  due to unknown bugs. This could be related to the first problem.


     ************** MTA Problem Tracking *****************

No new problem was reported. The following msids keep coming.

ESAPYI AWD3TQI AIOBP5CV AOVAMPWR AOFUNLST C28VMONB
CUSOB28V CIUB5V CIUB15V AWD2TQI AWD5TQI AOAUTTXN SEHSE400
AWD6TQI

Note:
Since many problems have never examined, we will close all problems with priority
4 in a few weeks.


                ******** Trending  ***********

In grating voltage and rotion angle, most of msids with up or down ward trends
are now clearly flattened.

Gyro rate AOSUNEC1 sine curve turn down (peak ~dom 230).

OHRMAPWR show a clear reverse U track and  back to 59.0 (peaked 62.0)


             *************  Telemetry ***********

On 5/9, 4MP5AV and 4MP28AV of Grating voltage and rotation show unusually high
percentage of red warning. This could be due to MTA limit problem rather than
a real problem. They reached 5V and 28V, respectively.


          *********** ACIS Focal Temperature ********

Acis focal plane temperature peaked three times:
        Day (DOY)       Temp (C)
	125.5		-113.5
	127.9		-113.5
	130.5		-113.5
	133.3		-113.5
	135.9		-113.5
	138.5		-113.5

The peak values are much lower than that of the previous period (-106C).
This is due to a new attitude (orbital) profile adopted by the operations team


             *********** Photon Page ************

Acis

OBSID   DETECTOR        GRATING TARGET          ANALYSIS
---------------------------------------------------------
834     ACIS-I  	NONE    NGC4261         OK
906     ACIS-I  	NONE    ABELL 1995      OK
641     ACIS-S  	HETG    PROXIMA GEN     OK
735     ACIS-I  	NONE    SN1993J         OK
682     ACIS-S  	HETG    BHXB            OK
380     ACIS-I 	 	NONE    M 82            OK
681     ACIS=S  	HETG    BHXB            OK
512     ACIS-I  	NONE    EMSS 1054.5-0321        OK
350     ACIS-S  	NONE    NGC 4258        OK

HRC

OBSID   DETECTOR        GRATING TARGET          ANALYSIS
---------------------------------------------------------
810     HRC-S   	LETG    NGC 4258        OK

Grating
OBSID   DETECTOR        GRATING TARGET          ANALYSIS
---------------------------------------------------------
810     HRC-S   	LETG    NGC 4258        OK
641     ACIS-S  	HETG    PROXIMA GEN     OK
682     ACIS-S  	HETG    BHXB            MISSING ANALYSIS
681     ACIS-S  	HETG    BHXB            MISSING ANALYSIS