Observation information
- date-obs: 2025-06-08
- time-obs: 19:43:57.163200000
- date-end: 2025-06-08
- time-end: 22:07:56.138300000
- obs_id: A13_037T01_9000006476
- exposure: 1627.61638057
- 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_52449cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52449cztM0_level2_quad_clean.evt
|
| Size (bytes) | 920,246,400 | 82,298,880 |
| Size | 877.6 MB
| 78.5 MB
|
| Events in quadrant A | 3,180,448 | 689,651 |
| Events in quadrant B | 5,067,673 | 695,169 |
| Events in quadrant C | 10,046,296 | 471,680 |
| Events in quadrant D | 15,234,973 | 153,003 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14687 | 2 |
| B | 0 | 19778 | 2 |
| C | 0 | 34651 | 2 |
| D | 0 | 49984 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6914 | 57 | 0.824414% |
| B | 6914 | 395 | 5.713046% |
| C | 6913 | 2102 | 30.406481% |
| D | 6914 | 5483 | 79.302864% |
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 | 8639 | 6915 | 15 | 15 | 0.17% | 0.22% |  |
| B | 8639 | 6914 | 298 | 298 | 3.45% | 4.31% |  |
| C | 8638 | 6913 | 2075 | 2075 | 24.02% | 30.02% |  |
| D | 8638 | 6913 | 5307 | 5307 | 61.44% | 76.77% |  |
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 | 45 | 128413 | 689.03 | 743 | 726 | 185.3 |
| A | 4 | 3 | 47389 | 251.81 | 743 | 726 | 185.3 |
| A | 10 | 253 | 20111 | 104.61 | 743 | 726 | 185.3 |
| B | 10 | 254 | 1316161 | 8419.47 | 724 | 698 | 156.2 |
| B | 4 | 170 | 244764 | 1562.12 | 724 | 698 | 156.2 |
| B | 4 | 171 | 191161 | 1219.04 | 724 | 698 | 156.2 |
| C | 15 | 224 | 2920745 | 16740.93 | 634 | 628 | 174.4 |
| C | 15 | 231 | 2629763 | 15072.74 | 634 | 628 | 174.4 |
| C | 15 | 248 | 786920 | 4507.79 | 634 | 628 | 174.4 |
| D | 6 | 42 | 12419013 | 105930.78 | 405 | 387 | 117.2 |
| D | 8 | 176 | 252834 | 2153.37 | 405 | 387 | 117.2 |
| D | 15 | 93 | 161170 | 1371.48 | 405 | 387 | 117.2 |
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 |  |