Observation information
- date-obs: 2025-06-07
- time-obs: 14:26:41.462400000
- date-end: 2025-06-07
- time-end: 20:06:18.406800000
- obs_id: A13_037T01_9000006476
- exposure: 14494.998208
- 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_52433cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52433cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,060,942,400 | 233,988,480 |
| Size | 1.9 GB
| 223.1 MB
|
| Events in quadrant A | 9,375,176 | 1,769,494 |
| Events in quadrant B | 18,449,451 | 1,433,409 |
| Events in quadrant C | 19,925,576 | 1,408,474 |
| Events in quadrant D | 27,057,740 | 1,148,378 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 41980 | 3 |
| B | 0 | 68269 | 3 |
| C | 0 | 72634 | 3 |
| D | 0 | 93667 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 390 | 0 |
| B | 0 | 390 | 0 |
| C | 0 | 390 | 0 |
| D | 0 | 390 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19202 | 342 | 1.781064% |
| B | 19203 | 4674 | 24.339947% |
| C | 19203 | 3111 | 16.200594% |
| D | 19202 | 5427 | 28.262681% |
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 | 20377 | 19205 | 93 | 93 | 0.46% | 0.48% |  |
| B | 20378 | 19206 | 2930 | 2930 | 14.38% | 15.26% |  |
| C | 20378 | 19205 | 2301 | 2301 | 11.29% | 11.98% |  |
| D | 20377 | 19205 | 4947 | 4947 | 24.28% | 25.76% |  |
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 | 9 | 162317 | 316.87 | 2051 | 2000 | 505.9 |
| A | 4 | 3 | 147213 | 287.02 | 2051 | 2000 | 505.9 |
| A | 5 | 240 | 141004 | 274.74 | 2051 | 2000 | 505.9 |
| B | 12 | 32 | 9144497 | 23900.86 | 1769 | 1704 | 382.5 |
| B | 5 | 172 | 980455 | 2558.63 | 1769 | 1704 | 382.5 |
| B | 4 | 171 | 342723 | 891.48 | 1769 | 1704 | 382.5 |
| C | 12 | 254 | 4443023 | 8774.71 | 1838 | 1822 | 506.1 |
| C | 1 | 45 | 1806224 | 3565.05 | 1838 | 1822 | 506.1 |
| C | 15 | 178 | 1699105 | 3353.41 | 1838 | 1822 | 506.1 |
| D | 12 | 17 | 7110041 | 14419.23 | 1748 | 1671 | 493.0 |
| D | 12 | 2 | 4272165 | 8662.64 | 1748 | 1671 | 493.0 |
| D | 8 | 176 | 1499400 | 3038.12 | 1748 | 1671 | 493.0 |
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 |  |