Observation information
- date-obs: 2025-06-08
- time-obs: 02:33:38.338900000
- date-end: 2025-06-08
- time-end: 04:48:43.314000000
- obs_id: A13_037T01_9000006476
- exposure: 3666.93238539
- sourceid: Cygnus X-2
- observer: ranjeev
- ra_pnt: 326.1714
- dec_pnt: 38.32141
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_037T01_9000006476_52439cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52439cztM0_level2_quad_clean.evt
|
| Size (bytes) | 500,912,640 | 69,192,000 |
| Size | 477.7 MB
| 66.0 MB
|
| Events in quadrant A | 2,177,893 | 484,214 |
| Events in quadrant B | 3,302,623 | 521,588 |
| Events in quadrant C | 5,192,128 | 418,673 |
| Events in quadrant D | 7,479,203 | 317,742 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10953 | 486 |
| B | 0 | 13949 | 522 |
| C | 0 | 19916 | 1012 |
| D | 0 | 28062 | 2422 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 106 | 6 |
| B | 0 | 105 | 3 |
| C | 0 | 107 | 5 |
| D | 0 | 108 | 6 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5065 | 19 | 0.375123% |
| B | 5053 | 76 | 1.504057% |
| C | 5038 | 622 | 12.346169% |
| D | 4957 | 1458 | 29.412951% |
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 | 7775 | 5101 | 15 | 15 | 0.19% | 0.29% |  |
| B | 7775 | 5096 | 73 | 73 | 0.94% | 1.43% |  |
| C | 7775 | 5074 | 608 | 608 | 7.82% | 11.98% |  |
| D | 7775 | 4977 | 1477 | 1477 | 19.00% | 29.68% |  |
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 | 5 | 240 | 54254 | 418.04 | 512 | 499 | 128.6 |
| A | 12 | 17 | 36029 | 276.31 | 512 | 499 | 128.6 |
| A | 4 | 3 | 19651 | 148.94 | 512 | 499 | 128.6 |
| B | 7 | 0 | 757228 | 6991.15 | 507 | 490 | 108.2 |
| B | 10 | 254 | 230492 | 2124.88 | 507 | 490 | 108.2 |
| B | 8 | 234 | 177136 | 1631.95 | 507 | 490 | 108.2 |
| C | 4 | 5 | 1719540 | 12979.68 | 468 | 466 | 132.4 |
| C | 15 | 224 | 511734 | 3860.27 | 468 | 466 | 132.4 |
| C | 15 | 147 | 261070 | 1967.66 | 468 | 466 | 132.4 |
| D | 12 | 17 | 2528049 | 20906.49 | 417 | 397 | 120.9 |
| D | 15 | 93 | 2330794 | 19274.98 | 417 | 397 | 120.9 |
| D | 15 | 24 | 223336 | 1843.95 | 417 | 397 | 120.9 |
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 |  |