Observation information
- date-obs: 2025-06-11
- time-obs: 01:51:28.601100000
- date-end: 2025-06-11
- time-end: 03:06:08.587800000
- obs_id: A13_037T01_9000006476
- exposure: 27.5934772491
- 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_52483cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52483cztM0_level2_quad_clean.evt
|
| Size (bytes) | 574,467,840 | 49,141,440 |
| Size | 547.9 MB
| 46.9 MB
|
| Events in quadrant A | 1,865,792 | 415,024 |
| Events in quadrant B | 3,545,779 | 431,637 |
| Events in quadrant C | 4,821,503 | 338,731 |
| Events in quadrant D | 10,700,273 | 2,282 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9108 | 312 |
| B | 0 | 13778 | 335 |
| C | 0 | 18012 | 783 |
| D | 0 | 36728 | 2023 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 88 | 3 |
| B | 0 | 89 | 2 |
| C | 0 | 90 | 2 |
| D | 0 | 90 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 4304 | 14 | 0.325279% |
| B | 4295 | 286 | 6.658906% |
| C | 4246 | 698 | 16.439001% |
| D | 4193 | 4175 | 99.570713% |
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 | 4433 | 4362 | 11 | 11 | 0.25% | 0.25% |  |
| B | 4441 | 4356 | 339 | 339 | 7.63% | 7.78% |  |
| C | 4412 | 4308 | 609 | 609 | 13.80% | 14.14% |  |
| D | 4366 | 4202 | 3964 | 3964 | 90.79% | 94.34% |  |
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 | 3 | 60 | 37750 | 334.05 | 446 | 436 | 111.7 |
| A | 4 | 3 | 33419 | 295.28 | 446 | 436 | 111.7 |
| A | 3 | 14 | 19211 | 168.08 | 446 | 436 | 111.7 |
| B | 10 | 254 | 1620307 | 17021.84 | 440 | 426 | 95.2 |
| B | 7 | 0 | 73516 | 768.04 | 440 | 426 | 95.2 |
| B | 10 | 44 | 35540 | 368.98 | 440 | 426 | 95.2 |
| C | 12 | 254 | 1277235 | 11603.51 | 396 | 392 | 110.0 |
| C | 2 | 12 | 856051 | 7775.94 | 396 | 392 | 110.0 |
| C | 15 | 224 | 558284 | 5069.93 | 396 | 392 | 110.0 |
| D | 15 | 93 | 9483518 | 302792.93 | 103 | 97 | 31.3 |
| D | 6 | 42 | 715218 | 22832.84 | 103 | 97 | 31.3 |
| D | 8 | 176 | 40168 | 1279.4 | 103 | 97 | 31.3 |
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 |  |