To:sot_shift
from: Dan Schwartz
date: 05 Apr 00 , 12:00noon EDT
Subject: SOT shift report, Shift L257
--------
See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_05_2000_L257.txt.

Shift L257. 
	Start at 096:12:00  GMT
		 = 08:00am    05 Apr EDT
	End	   12:00 noon 05 Apr
   
SOT Lead	DAS

(Times will be given in GMT on day 096. In general
times are rough, not precise.)

PLAN
Continue running load APR0400b. Start a long observation, OBSID 0433
of MCG -6-30-15 with ACIS-S/HETG, which will last over a day.

Next Contacts:
 096:14:20 to 16:20
 096:22:20 to 23:20
 097:07:00 to 08:00
 097:14:45 to 15:45
 097:21:45 to 23:40
 098:04:35 to 05:35
 098:13:00 to 14:00
 098:23:30 to 03:30 -- ACIS squeegy mode test.

EVENTS
Status at LOS, 096:07:14 was as follows:

       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          0
       RA                     =    280.003 deg 
       DEC                    =    -29.998 deg
       ROLL                   =     93.173 deg
       Format                 =          2
       OBSID                  =      62095 (ACIS CTI)

       SIM FA                 =       -467
       SIM TSC                =      -99616 (HRC-S)
       HETG                   =        OUT (80.2 deg)
       LETG                   =        OUT (79.1 deg)
        HRC-S HV is ON 
        EPHIN:         A-Leak =  0.4360 mu-a
                       B-Leak =  0.0680 mu-a

14:28 AOS
Status at AOS, 096:14:29 was as follows:

       PCAD MODE              =       NPNT
       CONTROL LAW FLAG       =       NPNT
       Stars:                 =          5 
       FIDS                   =          3
       RA                     =    203.966 deg 
       DEC                    =    -34.316 deg
       ROLL                   =     18.981 deg
       Format                 =          2
       OBSID                  =        433 (MCG -6-30-15)

       SIM FA                 =       -467
       SIM TSC                =      74423 (ACIS-S)
       HETG                   =         IN (6.3 deg)
       LETG                   =        OUT (79.1 deg)
        HRC-S HV is ON 
        EPHIN:         A-Leak =  0.4360 mu-a
                       B-Leak =  0.0680 mu-a


15:42 A   CE  130-214 keV proton rates up around 1500. 1 MeV protons are even
higher, so this is an unusual flat spectrum event. Ephin rates are
turning over by 25 Mev. 
 EPHIN Geom LARG
E1300         4		LT 1318.52 (RADMON
P4GM       1344		LT 3542.40  Trigger
P41GM         0		LT  100.00  levels )

16:19 EPHIN Geom LARG
E1300         6		LT 1318.52 (RADMON
P4GM       2000		LT 3542.40  Trigger
P41GM         0		LT  100.00  levels )

16:20 LOS  Ascending through 100176 km. 
  Other than the increasing proton radiation levels, status is
essentially unchanged at LOS


NOTES/ISSUES/PROBLEMS

From the 9am status meeting:
	Problems reported yesterday with weather at Canberra station did not
cause any data loss, nor roll-over of SSR A, thanks to getting high
rate dump from Goldstone.
	Initial review of AP0900 load went well, will have second
review today at 11:00 EDT. 
	[LATER NOTE: a subsequent review is set for 16:30 EDT today]
	HEADS-UP: Expecting VCDU roll-over at 098:19:52:36.7 GMT.
	The DB1 server went down last night, suspect a CPU problem,
troubleshooting today. Running on DB2.
	Review of CAPs and products for squeegy mode testing needs to
happen by COB tomorrow. 
	Upcoming meetings:
	   Thurs, Ap 6, 2pm OCC conference room. Schedule and test
plans for the next ONLS/OFLS delivery.
	   Tues, Ap 11, 9:15 action room. Safe mode recovery
revisions: changes, and presentation of new procedure.

Quick look data:
OBSID 1522, ACIS-I observation of Trapezium, looks good
OBSID 418, ACIS-S observation of MITG J0414+0534, nothing visible on
full image.
OBSID 604, ACIS-S/HETG observation of Algol, looks good
OBSID 851, ACIS-S observation of BAL 1044+3656, looks good.
OBSID 446, ACIS-I observation of W3B, can't see anything on full image
OBSID 867, ACIS-S observation of Q1331+170, looks good.
OBSID 140, ACIS-I cal observation of E0102-72.3 on S3, looks good.
OBSID 858, ACIS-S observation of B2 0755+37, looks good.
OBSID 664, ACIS-S CC observation of 1735-269. This LOOKS STRANGE: it
is supposed to be a full field cc-mode, but looks like a very small sub-array.

ACIS pmon needed re-starting. Focal plane temperature -119.7 at
096:15:43, 97155 km.

We note that the EPHIN P4GM channel (~5 to 8 MeV protons) is more
than halfway to the safe mode trigger level!!  We do not want to be
unduly alarmist, but it would not be a surprise if we find Chandra
in safe mode at our next AOS, 22:20 this evening (6:20pm EDT). 

-------------------------------------------------------
Dan Schwartz,	MS #3
das@head-cfa.harvard.edu  
phone: (617)495-7232    FAX:   (617)495-7356
cell phone: (617)512-5627   
pager: 800-759-8352 PIN 1636502
       or e-mail 1636502@skytel.com 
-------------------------------------------------------