Observation information
- date-obs: 2025-03-31
- time-obs: 06:23:14.635400000
- date-end: 2025-04-09
- time-end: 06:25:26.207400000
- obs_id: A13_090T01_9000006458
- exposure: 502086.978033
- sourceid: 4U 1755-338
- observer: arbind2196
- ra_pnt: 269.6667
- dec_pnt: -33.8075
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A13_090T01_9000006458cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458cztM0_level2_quad_clean.evt
|
Size (bytes) | 4,805,458,560 | 6,605,712,000 |
Size | 4.5 GB
| 6.2 GB
|
Events in quadrant A | 28,368,376 | 42,141,031 |
Events in quadrant B | 27,802,000 | 47,554,860 |
Events in quadrant C | 24,941,969 | 35,194,278 |
Events in quadrant D | 22,268,574 | 33,220,757 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 2265206 | 0 |
B | 0 | 1787807 | 0 |
C | 0 | 2388084 | 0 |
D | 0 | 2575117 | 0 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 679 | 0 |
B | 0 | 680 | 0 |
C | 0 | 680 | 0 |
D | 0 | 680 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 12301 | 0 |
B | 0 | 12452 | 0 |
C | 0 | 12436 | 0 |
D | 0 | 12434 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 612409 | 86132 | 14.064457% |
B | 612967 | 58634 | 9.565605% |
C | 612361 | 146901 | 23.989281% |
D | 612662 | 144899 | 23.650724% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
A | 777732 | 612274 | 0 | 0 | 0.00% | 0.00% |  |
B | 777733 | 613549 | 0 | 0 | 0.00% | 0.00% |  |
C | 777725 | 600092 | 0 | 0 | 0.00% | 0.00% |  |
D | 777732 | 605693 | 0 | 0 | 0.00% | 0.00% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
Pixel properties |
Quadrant properties |
Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
A | 14 | 188 | 29722 | 9.33 | 7495 | 6917 | 2443.5 |
A | 9 | 255 | 28957 | 9.02 | 7495 | 6917 | 2443.5 |
A | 14 | 95 | 23808 | 6.91 | 7495 | 6917 | 2443.5 |
B | 3 | 25 | 22862 | 9.32 | 7386 | 6969 | 1706.1 |
B | 9 | 173 | 22372 | 9.03 | 7386 | 6969 | 1706.1 |
B | 2 | 245 | 22272 | 8.97 | 7386 | 6969 | 1706.1 |
C | 15 | 175 | 19800 | 6.08 | 6704 | 6106 | 2252.3 |
C | 2 | 31 | 19752 | 6.06 | 6704 | 6106 | 2252.3 |
C | 15 | 127 | 19749 | 6.06 | 6704 | 6106 | 2252.3 |
D | 6 | 218 | 28411 | 10.63 | 6394 | 5667 | 2139.9 |
D | 3 | 30 | 22008 | 7.64 | 6394 | 5667 | 2139.9 |
D | 15 | 11 | 20212 | 6.8 | 6394 | 5667 | 2139.9 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
Quadrant A |
 |
 |
Quadrant B |
Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
Parameter |
Plot |
CZT HV Monitor |  |
D_VDD |  |
Temperature 1 |  |
Veto HV Monitor |  |
Veto LLD |  |
Alpha Counter |  |
_CPM_Rate |  |
CZT Counter |  |
+2.5 Volts monitor |  |
+5 Volts monitor |  |
_ROLL_ROT |  |
_Roll_DEC |  |
_Roll_RA |  |
Veto Counter |  |