Observation information
- date-obs: 2025-03-31
- time-obs: 18:40:33.496100000
- date-end: 2025-03-31
- time-end: 20:51:00.472300000
- obs_id: A13_090T01_9000006458
- exposure: 5447.91221446
- 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_9000006458_51424cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51424cztM0_level2_quad_clean.evt
|
Size (bytes) | 602,337,600 | 94,438,080 |
Size | 574.4 MB
| 90.1 MB
|
Events in quadrant A | 5,050,541 | 628,962 |
Events in quadrant B | 4,480,469 | 670,435 |
Events in quadrant C | 8,274,601 | 515,824 |
Events in quadrant D | 3,976,440 | 581,078 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 19597 | 2 |
B | 0 | 17861 | 2 |
C | 0 | 29212 | 2 |
D | 0 | 16578 | 3 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 11 | 0 |
B | 0 | 12 | 0 |
C | 0 | 12 | 0 |
D | 0 | 12 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 136 | 0 |
B | 0 | 136 | 0 |
C | 0 | 136 | 0 |
D | 0 | 136 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6638 | 361 | 5.438385% |
B | 6638 | 466 | 7.020187% |
C | 6638 | 1404 | 21.150949% |
D | 6637 | 185 | 2.787404% |
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 | 7647 | 6638 | 203 | 203 | 2.65% | 3.06% |  |
B | 7648 | 6639 | 227 | 227 | 2.97% | 3.42% |  |
C | 7648 | 6639 | 1199 | 1199 | 15.68% | 18.06% |  |
D | 7647 | 6638 | 129 | 129 | 1.69% | 1.94% |  |
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 | 12 | 3 | 963038 | 5382.02 | 727 | 709 | 178.8 |
A | 7 | 64 | 289625 | 1615.82 | 727 | 709 | 178.8 |
A | 15 | 174 | 186963 | 1041.66 | 727 | 709 | 178.8 |
B | 5 | 185 | 826513 | 5363.33 | 722 | 696 | 154.0 |
B | 5 | 172 | 142436 | 920.54 | 722 | 696 | 154.0 |
B | 10 | 14 | 123327 | 796.44 | 722 | 696 | 154.0 |
C | 10 | 171 | 1815124 | 10042.59 | 659 | 653 | 180.7 |
C | 4 | 12 | 1682646 | 9309.36 | 659 | 653 | 180.7 |
C | 10 | 19 | 585673 | 3237.92 | 659 | 653 | 180.7 |
D | 7 | 80 | 277418 | 1407.85 | 703 | 677 | 196.6 |
D | 11 | 176 | 241718 | 1226.24 | 703 | 677 | 196.6 |
D | 0 | 129 | 118229 | 598.01 | 703 | 677 | 196.6 |
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 |  |