Observation information
- date-obs: 2025-06-12
- time-obs: 05:48:28.314300000
- date-end: 2025-06-12
- time-end: 06:18:44.308900000
- obs_id: A13_037T01_9000006476
- exposure: 1249.0462932
- 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_52500cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52500cztM0_level2_quad_clean.evt
|
| Size (bytes) | 177,874,560 | 23,011,200 |
| Size | 169.6 MB
| 21.9 MB
|
| Events in quadrant A | 719,430 | 157,183 |
| Events in quadrant B | 2,814,151 | 121,456 |
| Events in quadrant C | 1,560,889 | 145,960 |
| Events in quadrant D | 1,347,432 | 140,270 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3650 | 16 |
| B | 0 | 9628 | 43 |
| C | 0 | 5966 | 30 |
| D | 0 | 5302 | 48 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 37 | 1 |
| B | 0 | 38 | 2 |
| C | 0 | 38 | 2 |
| D | 0 | 38 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 1807 | 0 | 0.000000% |
| B | 1803 | 597 | 33.111481% |
| C | 1801 | 97 | 5.385897% |
| D | 1803 | 27 | 1.497504% |
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 | 1807 | 1807 | 1 | 1 | 0.06% | 0.06% |  |
| B | 1809 | 1806 | 585 | 585 | 32.34% | 32.39% |  |
| C | 1812 | 1806 | 115 | 115 | 6.35% | 6.37% |  |
| D | 1810 | 1808 | 33 | 33 | 1.82% | 1.83% |  |
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 | 11 | 3 | 27663 | 621.82 | 173 | 168 | 44.2 |
| A | 4 | 3 | 6658 | 146.78 | 173 | 168 | 44.2 |
| A | 8 | 246 | 4402 | 95.76 | 173 | 168 | 44.2 |
| B | 10 | 44 | 1896557 | 59631.24 | 138 | 133 | 31.8 |
| B | 7 | 0 | 267731 | 8414.36 | 138 | 133 | 31.8 |
| B | 0 | 63 | 46576 | 1460.36 | 138 | 133 | 31.8 |
| C | 15 | 224 | 337820 | 7278.67 | 160 | 158 | 46.4 |
| C | 15 | 248 | 224663 | 4839.44 | 160 | 158 | 46.4 |
| C | 4 | 5 | 136260 | 2933.82 | 160 | 158 | 46.4 |
| D | 15 | 93 | 526612 | 11077.13 | 162 | 154 | 47.5 |
| D | 7 | 96 | 44801 | 939.41 | 162 | 154 | 47.5 |
| D | 2 | 252 | 41452 | 868.95 | 162 | 154 | 47.5 |
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 |  |