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OBSID:
29483
 Title:
AO-25 LETG/ACIS-S Calibration Observations of RXJ 1856     
Investigator:
Calibration
 Observer:
Marshall, Herman
 Phone:
617 253-8573
 Email:
hermanm@space.mit.edu
Target Name:
RXJ 1856.5-3754
 Sequence Number:
590759
 Instrument:
ACIS-S
 Grating:
LETG
 SI Mode:
TE_00CE6B
 Raster Scan:
N
 Annotated DOT:
JUL1524a

Proposal Number:
25500500
 Right Ascension:
284.147
 Declination:
-37.9096
 Status:
archived
 Start Date:
2024-07-20 16:18:09
Category:
SN, SNR AND ISOLATED NS
 Type:
CAL
 AO Cycle:
25
 Dither Flag:
Y
 Y Offset:
1.4
 Z Offset:
0
Est. Count Rate:
10
 Order-1 Count Rate:
3
 Exposure Time:
10
 Time Remaining:
10.087
 Reqd Start Time:

 Reqd Stop Time:
Period:

 Epoch:

 Start of Period:

 End of Period:

 PS Margin:

 PE Margin:

 Max Segments:
0

ACIS Mode:
TE
 Standard?:
No
 BEP Mode:
F
 Dropped Chip Count:
1
 Optional Chips:
S5
On-Chip Summing?:
No
 Row Sum:

 Column Sum:

 Frame Time:
Subarray Mode:
CUSTOM
 Starting Row:
448
 Row Count:
128
 Subarray Frame Time:

Duty Cycle?:
No
 Cycle Count:
0
 Primary Exp Time:

 Secondary Exp Time:
Event Filter?:
No
 Filter Threshold:

 Filter Range:

 Bias Requested?:
No
 Bias Frequency:

 Bias After?:
No
 Spatial Window?:
No

Abstract:
We continue to monitor the build-up of contamination on ACIS with LETG/ACIS-S observations RXJ1856.

psci Run:
11
 Processing Date:
Aug 11 2024
 psci Directory:
/nfs/maaxnew/r3/fn/acis128a/acis128.log
OBSID:
29483
 SIM Mode:
ACIS-S
 OTG Mode:
LETG
 Seq Number:
590759
 Target Name:
RXJ_1856.5-3754
 AO:
25
Start VCDU:
57835:112
 Start Time (UTC):
202:59608.749
 Stop Time (UTC):
202:69698.752
 Kilosecs:
10.1
 % Frames:
100.0
 # CCDs:
S4
# Frames:
15740
 # Events:
37843
 Events/sec:
3
 PSCI errors:
0
 % drops:
0.0
 Bias Errs:
0
 FP Temp:
-111.3
Parameter Block:
0x00ce6014
 Window Block:
-
 # Windows:
0
 FEP Mode:
Te3x3
 BEP Mode:
F
 Start Row:
447
 # Rows:
128
Primary Exposure:
6
 Secondary Exposure:
0
 Duty Cycle:
0
 Summing?:
No
 Bias?:
Yes
 Trickle?:
Yes
 Bias Run:
11

pgf@space.mit.edu Thu Apr 3 20:00:53 EST 2025