Observation information
- date-obs: 2025-04-25
- time-obs: 10:38:47.205700000
- date-end: 2025-04-25
- time-end: 12:43:53.185200000
- obs_id: A13_090T01_9000006464
- exposure: 5079.70665985
- 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_51790cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006464_51790cztM0_level2_quad_clean.evt
|
Size (bytes) | 915,410,880 | 92,090,880 |
Size | 873.0 MB
| 87.8 MB
|
Events in quadrant A | 6,178,467 | 650,170 |
Events in quadrant B | 9,952,570 | 565,737 |
Events in quadrant C | 5,971,078 | 624,760 |
Events in quadrant D | 11,203,362 | 424,958 |
Level1 data integrity
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 150 | 0 |
B | 0 | 150 | 0 |
C | 0 | 150 | 0 |
D | 0 | 152 | 0 |
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 23400 | 0 |
B | 0 | 34742 | 2 |
C | 0 | 22805 | 0 |
D | 0 | 38472 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 7506 | 508 | 6.767919% |
B | 7505 | 2129 | 28.367755% |
C | 7505 | 664 | 8.847435% |
D | 7505 | 2776 | 36.988674% |
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 | 7506 | 7506 | 416 | 416 | 5.54% | 5.54% |  |
B | 7505 | 7505 | 1893 | 1893 | 25.22% | 25.22% |  |
C | 7505 | 7505 | 571 | 571 | 7.61% | 7.61% |  |
D | 7505 | 7505 | 2534 | 2534 | 33.76% | 33.76% |  |
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 | 926167 | 4839.69 | 783 | 765 | 191.2 |
A | 4 | 175 | 567599 | 2964.45 | 783 | 765 | 191.2 |
A | 5 | 243 | 226891 | 1182.6 | 783 | 765 | 191.2 |
B | 10 | 128 | 6370920 | 41298.8 | 716 | 690 | 154.2 |
B | 5 | 32 | 145452 | 938.51 | 716 | 690 | 154.2 |
B | 0 | 171 | 88695 | 570.54 | 716 | 690 | 154.2 |
C | 3 | 233 | 791120 | 3934.57 | 739 | 732 | 200.9 |
C | 13 | 3 | 702689 | 3494.36 | 739 | 732 | 200.9 |
C | 15 | 178 | 447747 | 2225.25 | 739 | 732 | 200.9 |
D | 11 | 129 | 7097344 | 40015.06 | 640 | 618 | 177.4 |
D | 8 | 176 | 436088 | 2455.41 | 640 | 618 | 177.4 |
D | 2 | 249 | 219977 | 1236.86 | 640 | 618 | 177.4 |
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 |  |