Observation information
- date-obs: 2025-06-11
- time-obs: 08:56:50.527700000
- date-end: 2025-06-11
- time-end: 10:54:38.508100000
- obs_id: A13_037T01_9000006476
- exposure: 54.9170687795
- 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_52487cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52487cztM0_level2_quad_clean.evt
|
| Size (bytes) | 960,376,320 | 77,872,320 |
| Size | 915.9 MB
| 74.3 MB
|
| Events in quadrant A | 4,230,256 | 629,810 |
| Events in quadrant B | 5,040,243 | 696,179 |
| Events in quadrant C | 7,438,716 | 534,807 |
| Events in quadrant D | 18,293,028 | 4,369 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17655 | 3 |
| B | 0 | 19885 | 0 |
| C | 0 | 26986 | 0 |
| D | 0 | 59268 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7066 | 341 | 4.825927% |
| B | 7069 | 243 | 3.437544% |
| C | 7069 | 1154 | 16.324798% |
| D | 7068 | 7031 | 99.476514% |
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 | 7068 | 7067 | 301 | 301 | 4.26% | 4.26% |  |
| B | 7069 | 7069 | 145 | 145 | 2.05% | 2.05% |  |
| C | 7069 | 7069 | 1012 | 1012 | 14.32% | 14.32% |  |
| D | 7067 | 7067 | 6783 | 6783 | 95.98% | 95.98% |  |
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 | 26 | 1118552 | 6188.64 | 741 | 722 | 180.6 |
| A | 11 | 3 | 48288 | 263.34 | 741 | 722 | 180.6 |
| A | 4 | 3 | 38282 | 207.94 | 741 | 722 | 180.6 |
| B | 7 | 0 | 695485 | 4303.42 | 742 | 716 | 161.4 |
| B | 10 | 44 | 556354 | 3441.64 | 742 | 716 | 161.4 |
| B | 10 | 254 | 516616 | 3195.5 | 742 | 716 | 161.4 |
| C | 15 | 248 | 2266461 | 12394.41 | 671 | 666 | 182.8 |
| C | 2 | 12 | 814997 | 4454.57 | 671 | 666 | 182.8 |
| C | 15 | 224 | 589059 | 3218.64 | 671 | 666 | 182.8 |
| D | 15 | 93 | 16699727 | 246035.51 | 236 | 225 | 67.9 |
| D | 6 | 42 | 246865 | 3633.77 | 236 | 225 | 67.9 |
| D | 12 | 6 | 102966 | 1513.69 | 236 | 225 | 67.9 |
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 |  |