Observation information
- date-obs: 2025-06-10
- time-obs: 22:25:47.637700000
- date-end: 2025-06-11
- time-end: 00:25:29.616700000
- obs_id: A13_037T01_9000006476
- exposure: 12.3566641808
- 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_52481cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52481cztM0_level2_quad_clean.evt
|
| Size (bytes) | 741,723,840 | 70,997,760 |
| Size | 707.4 MB
| 67.7 MB
|
| Events in quadrant A | 2,895,450 | 589,266 |
| Events in quadrant B | 3,475,551 | 631,027 |
| Events in quadrant C | 5,345,148 | 509,072 |
| Events in quadrant D | 15,273,350 | 1,033 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12865 | 2 |
| B | 0 | 14487 | 1 |
| C | 0 | 20146 | 1 |
| D | 0 | 49520 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6001 | 13 | 0.216631% |
| B | 6002 | 120 | 1.999334% |
| C | 6002 | 671 | 11.179607% |
| D | 6002 | 5993 | 99.850050% |
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 | 7181 | 6002 | 8 | 8 | 0.11% | 0.13% |  |
| B | 7182 | 6003 | 57 | 57 | 0.79% | 0.95% |  |
| C | 7182 | 6003 | 591 | 591 | 8.23% | 9.85% |  |
| D | 7181 | 6001 | 5800 | 5800 | 80.77% | 96.65% |  |
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 | 8 | 249 | 289854 | 1815.28 | 637 | 621 | 159.3 |
| A | 4 | 3 | 47847 | 296.4 | 637 | 621 | 159.3 |
| A | 3 | 14 | 20273 | 123.34 | 637 | 621 | 159.3 |
| B | 10 | 254 | 305943 | 2239.98 | 634 | 611 | 136.3 |
| B | 4 | 171 | 282274 | 2066.33 | 634 | 611 | 136.3 |
| B | 10 | 44 | 147289 | 1076.06 | 634 | 611 | 136.3 |
| C | 15 | 224 | 2112069 | 12790.91 | 597 | 592 | 165.1 |
| C | 13 | 3 | 268519 | 1623.05 | 597 | 592 | 165.1 |
| C | 2 | 12 | 232371 | 1404.07 | 597 | 592 | 165.1 |
| D | 15 | 93 | 13680612 | 379038.55 | 119 | 113 | 36.1 |
| D | 6 | 42 | 980515 | 27163.49 | 119 | 113 | 36.1 |
| D | 8 | 176 | 38400 | 1060.8 | 119 | 113 | 36.1 |
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 |  |