Observation information
- date-obs: 2025-06-11
- time-obs: 17:33:37.441600000
- date-end: 2025-06-11
- time-end: 19:05:17.426400000
- obs_id: A13_037T01_9000006476
- exposure: 631.921170354
- 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_52492cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52492cztM0_level2_quad_clean.evt
|
| Size (bytes) | 366,765,120 | 30,551,040 |
| Size | 349.8 MB
| 29.1 MB
|
| Events in quadrant A | 1,330,204 | 276,167 |
| Events in quadrant B | 2,134,093 | 262,079 |
| Events in quadrant C | 4,051,532 | 144,629 |
| Events in quadrant D | 5,861,330 | 58,595 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6020 | 369 |
| B | 0 | 9152 | 1046 |
| C | 0 | 14874 | 1087 |
| D | 0 | 20953 | 1806 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 56 | 2 |
| B | 0 | 56 | 2 |
| C | 0 | 58 | 2 |
| D | 0 | 58 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2579 | 68 | 2.636681% |
| B | 2552 | 264 | 10.344828% |
| C | 2536 | 1121 | 44.203470% |
| D | 2518 | 1982 | 78.713264% |
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 | 4899 | 2611 | 5 | 5 | 0.10% | 0.19% |  |
| B | 4899 | 2572 | 160 | 160 | 3.27% | 6.22% |  |
| C | 4899 | 2570 | 903 | 903 | 18.43% | 35.14% |  |
| D | 4900 | 2517 | 1927 | 1927 | 39.33% | 76.56% |  |
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 | 46 | 59674 | 759.87 | 304 | 295 | 78.1 |
| A | 3 | 45 | 29567 | 374.59 | 304 | 295 | 78.1 |
| A | 12 | 17 | 20522 | 258.84 | 304 | 295 | 78.1 |
| B | 10 | 44 | 625743 | 9949.53 | 284 | 275 | 62.9 |
| B | 7 | 0 | 206438 | 3279.51 | 284 | 275 | 62.9 |
| B | 4 | 170 | 40184 | 634.85 | 284 | 275 | 62.9 |
| C | 15 | 224 | 2838891 | 46177.97 | 220 | 218 | 61.5 |
| C | 2 | 12 | 148868 | 2418.16 | 220 | 218 | 61.5 |
| C | 13 | 3 | 111027 | 1802.58 | 220 | 218 | 61.5 |
| D | 15 | 93 | 3559085 | 71189.44 | 168 | 160 | 50.0 |
| D | 6 | 42 | 1284256 | 25685.87 | 168 | 160 | 50.0 |
| D | 2 | 62 | 147917 | 2955.59 | 168 | 160 | 50.0 |
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 |  |