Observation information
- date-obs: 2025-04-24
- time-obs: 06:45:30.489300000
- date-end: 2025-04-24
- time-end: 08:50:58.468200000
- obs_id: A13_090T01_9000006464
- exposure: 3537.2843973
- 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_9000006464_51773cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51773cztM0_level2_quad_clean.evt
|
Size (bytes) | 683,838,720 | 87,739,200 |
Size | 652.2 MB
| 83.7 MB
|
Events in quadrant A | 4,673,725 | 599,992 |
Events in quadrant B | 5,430,650 | 659,188 |
Events in quadrant C | 3,998,293 | 614,257 |
Events in quadrant D | 10,691,978 | 317,472 |
Level1 data integrity
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 9 | 0 |
B | 0 | 9 | 0 |
C | 0 | 9 | 0 |
D | 0 | 9 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 134 | 0 |
B | 0 | 134 | 0 |
C | 0 | 134 | 0 |
D | 0 | 134 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 18412 | 1 |
B | 0 | 20732 | 1 |
C | 0 | 16302 | 1 |
D | 0 | 36353 | 7 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6684 | 530 | 7.929384% |
B | 6684 | 512 | 7.660084% |
C | 6684 | 189 | 2.827648% |
D | 6683 | 3348 | 50.097262% |
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 | 7529 | 6684 | 253 | 253 | 3.36% | 3.79% |  |
B | 7529 | 6685 | 261 | 261 | 3.47% | 3.90% |  |
C | 7529 | 6685 | 93 | 93 | 1.24% | 1.39% |  |
D | 7528 | 6683 | 2601 | 2601 | 34.55% | 38.92% |  |
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 | 15 | 174 | 658638 | 3791.37 | 713 | 697 | 173.5 |
A | 2 | 143 | 345671 | 1987.9 | 713 | 697 | 173.5 |
A | 12 | 3 | 206136 | 1183.84 | 713 | 697 | 173.5 |
B | 4 | 206 | 1852616 | 12024.47 | 714 | 687 | 154.0 |
B | 1 | 239 | 240767 | 1558.83 | 714 | 687 | 154.0 |
B | 9 | 223 | 105703 | 681.86 | 714 | 687 | 154.0 |
C | 15 | 218 | 452842 | 2309.38 | 720 | 715 | 195.8 |
C | 9 | 38 | 215956 | 1099.41 | 720 | 715 | 195.8 |
C | 15 | 224 | 114417 | 580.77 | 720 | 715 | 195.8 |
D | 11 | 129 | 8270983 | 58807.75 | 506 | 489 | 140.6 |
D | 7 | 222 | 120599 | 854.05 | 506 | 489 | 140.6 |
D | 0 | 18 | 74291 | 524.77 | 506 | 489 | 140.6 |
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 |  |