SOT shift report 2001-04-18 L636
Start at 2001:108:12:40 GMT
       = 2001 Apr. 18 08:40am EST
End                   11:00am EST


SOT Lead	Ed Kellogg

Plan:	CAL-ER 2001:108:13:11
then    CAL-ER 2001:108:16:23


REAL TIME OBSERVATIONS				GMT	OBSID
----------------------				----	-----
none

Notes from 9 am  meeting
------------------------
OPS: 
	Passes		   over the last   day(s) 
	Dumps		current
	Data loss	-
	Load is good -> -
	CAPs		
			
	next passes	1930
 
MP:	APR23 review at 2 pm.

S/C:	ASVT testing of builds and functionality for OTG was very
successful. Today's work is on SOP tweaks and the deadman. We plan to
submit to the FDB next week.

GOT:	-

SOT:	"The geomagnetic field is expected to be unsettled to active for
April 18 and 19 as a result of possible effects from the X14/2b event
on April 15..." - space weather report.
	ACE low E proton radiation is moderately high and unsteady.
	High energy proton flux  on ACE went up x3 about 6 hours ago,
suggesting we may see more low energy protons in a few hours.

Mgr:	Action room unavailable through Thurs.

Data
----
On colossus (/dsops/GOT/input), - 
2001_107_1652_107_2347_Dump_EM_15464.gz

Evaluation of QL data
---------------------
OBSID   Target		SI         SOT Eval. 
-----   ------		------     -------

NOTES/ISSUES/PROBLEMS
--------------------- 
ACE 2 hr fluence is 2.4e7 vs. threshold 3.6e8.

*ACIS* Orbital fluence (since perigee)is 0.0e0 vs. threshold 1.0e9.

ACIS focal plane temperature -119.2 at 0614 EST.

- EPHIN rates (cts/cm^2-s-sr) at 1014 GMT   OBSERVED     RADMON limit
                                         ------------  -------------  
     E1300 (electrons, 2.64 - 6.18 MeV):  941.1          10.0   (in belts)   
     P4GM (protons, 5.0 - 8.3 MeV):     41452.6         300.0   (in belts) 
     P41GM (protons, 41 - 53 MeV):         11.4           8.47  (in belts)    

Chandra's state was:
---------------------
UTC 2001:108:12:49:04 (Apr18) f_ACE 3.07e+03 F_CRM 0.00e+00 Kp 2.0 R km  51612A
OBT 2001:108:10:14:14  CTUVCDU  9200255  OBC s/w NRML  FMT2_NORM   CPEstat NORM
OBT      103976054.85  ONLVCDU  9200240  OBC Errs   0
                                                     OBSID  61664  EPState  SUN
SIM TTpos  -99616  HETG Angle 79.84  PCADMODE NPNT   RA    89.498  Bus V  30.71
SIM FApos    -467  LETG Angle 78.34  PCONTROL NPNT   Dec  -31.998  Bus I  25.96
                                     AOFSTAR  GUID   Roll 246.012
ACA Object SSSSSSSS    Dither  ENAB                                HRC-I HV OFF
ACA ImFunc TTTTTTTT    Dith Yang  -5.90    Yaw Rate      0.06      HRC-S HV  ON
ACA CCD Temp  -10.4    Dith Zang   8.00    Pitch Rate   -0.12      OBSMode NEXT
ACA Int Time  1.698                        Roll Rate    -0.08      Door OP UNAC
AOACSTAT         OK    FSS SunBeta  SUN                            Door CL UNAC
                       FSS Alfa   -0.65    Batt 1 SOC  100.00%
Avg HRMA Temp 70.63    FSS Beta   15.76    Batt 2 SOC  100.00%  ACIS Stat7-0 67
Avg OBA Temp  51.21    SA Resolv  74.20    Batt 3 SOC  100.00%  Cold Rad -127.9
OBA Tavg Fault NFLT    SA Sun Pres ILLM                         Warm Rad  -82.0
OBA Trng Fault NFLT                        +Y SA Amps   12.37   RadMon     DISA
HRMA power     9.60    SCS 128   ACT       -Y SA Amps   13.33   EPHIN Geom SMAL
OBA power    100.40    SCS 129   ACT       +Y SA Temp  111.43   E150   494829.3
                       SCS 130   ACT       -Y SA Temp  112.04   E300    39135.9
Roll Mom.   -15.783    SCS 107  INAC                            E1300     941.1
Pitch Mom.   -3.079   UpL Cmd Acc  13620   EPH A-Leak  1.0200   P4GM    41452.6
Yaw Mom.     -4.404   Cmd Rej A       30   EPH B-Leak  0.2080   P41GM      11.4




See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or 
/proj/ascwww/AXAF/extra/science/htdocs/acis/SOT_reports/Apr_18_2001_L636.txt