Observation information
- date-obs: 2025-06-09
- time-obs: 22:01:57.889300000
- date-end: 2025-06-10
- time-end: 00:08:39.867600000
- obs_id: A13_037T01_9000006476
- exposure: 20.9713394642
- 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_52466cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52466cztM0_level2_quad_clean.evt
|
| Size (bytes) | 852,802,560 | 76,219,200 |
| Size | 813.3 MB
| 72.7 MB
|
| Events in quadrant A | 3,029,282 | 641,439 |
| Events in quadrant B | 4,835,974 | 668,673 |
| Events in quadrant C | 6,501,699 | 544,866 |
| Events in quadrant D | 16,699,598 | 1,670 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13847 | 2 |
| B | 0 | 18793 | 2 |
| C | 0 | 23874 | 2 |
| D | 0 | 54109 | 7 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6465 | 21 | 0.324826% |
| B | 6465 | 326 | 5.042537% |
| C | 6465 | 813 | 12.575406% |
| D | 6464 | 6452 | 99.814356% |
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 | 7575 | 6466 | 8 | 8 | 0.11% | 0.12% |  |
| B | 7575 | 6466 | 270 | 270 | 3.56% | 4.18% |  |
| C | 7575 | 6465 | 595 | 595 | 7.85% | 9.20% |  |
| D | 7574 | 6465 | 6029 | 6029 | 79.60% | 93.26% |  |
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 | 14 | 68923 | 395.07 | 696 | 679 | 172.7 |
| A | 4 | 3 | 45750 | 260.92 | 696 | 679 | 172.7 |
| A | 11 | 3 | 38717 | 220.2 | 696 | 679 | 172.7 |
| B | 10 | 254 | 1479210 | 10026.14 | 689 | 664 | 147.5 |
| B | 4 | 81 | 162231 | 1095.6 | 689 | 664 | 147.5 |
| B | 4 | 171 | 130472 | 880.24 | 689 | 664 | 147.5 |
| C | 12 | 254 | 1600926 | 9064.92 | 640 | 635 | 176.5 |
| C | 15 | 224 | 1411979 | 7994.62 | 640 | 635 | 176.5 |
| C | 13 | 3 | 271374 | 1533.61 | 640 | 635 | 176.5 |
| D | 15 | 93 | 15479955 | 315478.33 | 168 | 160 | 49.1 |
| D | 15 | 78 | 101916 | 2073.79 | 168 | 160 | 49.1 |
| D | 6 | 42 | 62282 | 1266.05 | 168 | 160 | 49.1 |
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 |  |