Observation information
- date-obs: 2025-06-10
- time-obs: 23:55:17.622000000
- date-end: 2025-06-11
- time-end: 02:10:50.598100000
- obs_id: A13_037T01_9000006476
- exposure: 70.3444792032
- 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_52482cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52482cztM0_level2_quad_clean.evt
|
| Size (bytes) | 818,072,640 | 76,682,880 |
| Size | 780.2 MB
| 73.1 MB
|
| Events in quadrant A | 3,018,891 | 640,845 |
| Events in quadrant B | 3,706,839 | 693,062 |
| Events in quadrant C | 6,820,250 | 535,166 |
| Events in quadrant D | 16,239,057 | 5,902 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13586 | 2 |
| B | 0 | 15623 | 2 |
| C | 0 | 24684 | 2 |
| D | 0 | 52675 | 5 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6404 | 26 | 0.405996% |
| B | 6404 | 139 | 2.170518% |
| C | 6404 | 1011 | 15.787008% |
| D | 6403 | 6347 | 99.125410% |
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 | 7614 | 6405 | 3 | 3 | 0.04% | 0.05% |  |
| B | 7614 | 6405 | 27 | 27 | 0.35% | 0.42% |  |
| C | 7614 | 6405 | 828 | 828 | 10.87% | 12.93% |  |
| D | 7612 | 6402 | 6090 | 6090 | 80.01% | 95.13% |  |
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 | 95293 | 548.93 | 696 | 680 | 172.4 |
| A | 3 | 14 | 82871 | 476.86 | 696 | 680 | 172.4 |
| A | 4 | 3 | 42140 | 240.55 | 696 | 680 | 172.4 |
| B | 10 | 254 | 656149 | 4366.3 | 695 | 671 | 150.1 |
| B | 4 | 81 | 50443 | 331.54 | 695 | 671 | 150.1 |
| B | 0 | 171 | 45460 | 298.35 | 695 | 671 | 150.1 |
| C | 12 | 254 | 1488468 | 8352.98 | 642 | 638 | 178.1 |
| C | 15 | 224 | 881209 | 4943.7 | 642 | 638 | 178.1 |
| C | 2 | 12 | 717081 | 4022.26 | 642 | 638 | 178.1 |
| D | 15 | 93 | 15427468 | 382084.34 | 134 | 127 | 40.4 |
| D | 6 | 42 | 97695 | 2416.44 | 134 | 127 | 40.4 |
| D | 7 | 96 | 60462 | 1494.3 | 134 | 127 | 40.4 |
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 |  |