Observation information
- date-obs: 2025-06-11
- time-obs: 07:06:58.546700000
- date-end: 2025-06-11
- time-end: 09:10:38.525300000
- obs_id: A13_037T01_9000006476
- exposure: 205.106231451
- 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_52486cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52486cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,050,033,600 | 76,368,960 |
| Size | 1001.4 MB
| 72.8 MB
|
| Events in quadrant A | 3,754,846 | 660,709 |
| Events in quadrant B | 5,282,457 | 690,305 |
| Events in quadrant C | 10,824,959 | 434,650 |
| Events in quadrant D | 18,438,856 | 16,234 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16554 | 2 |
| B | 0 | 20762 | 2 |
| C | 0 | 37193 | 2 |
| D | 0 | 59771 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7330 | 371 | 5.061392% |
| B | 7331 | 626 | 8.539081% |
| C | 7331 | 2678 | 36.529805% |
| D | 7330 | 7181 | 97.967258% |
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 | 7420 | 7333 | 47 | 47 | 0.63% | 0.64% |  |
| B | 7421 | 7334 | 191 | 191 | 2.57% | 2.60% |  |
| C | 7421 | 7334 | 2254 | 2254 | 30.37% | 30.73% |  |
| D | 7420 | 7330 | 6918 | 6918 | 93.23% | 94.38% |  |
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 | 230458 | 1159.98 | 805 | 784 | 198.0 |
| A | 13 | 248 | 118301 | 593.53 | 805 | 784 | 198.0 |
| A | 4 | 61 | 59624 | 297.18 | 805 | 784 | 198.0 |
| B | 10 | 254 | 1266117 | 7474.64 | 777 | 749 | 169.3 |
| B | 5 | 172 | 378568 | 2231.81 | 777 | 749 | 169.3 |
| B | 10 | 44 | 246552 | 1451.98 | 777 | 749 | 169.3 |
| C | 15 | 224 | 3030504 | 17276.5 | 636 | 630 | 175.4 |
| C | 12 | 252 | 2300202 | 13112.28 | 636 | 630 | 175.4 |
| C | 15 | 248 | 1697867 | 9677.73 | 636 | 630 | 175.4 |
| D | 15 | 93 | 16306551 | 230162.45 | 244 | 234 | 70.8 |
| D | 6 | 42 | 794919 | 11216.92 | 244 | 234 | 70.8 |
| D | 7 | 38 | 81290 | 1144.1 | 244 | 234 | 70.8 |
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 |  |