Observation information
- date-obs: 2025-06-12
- time-obs: 09:09:36.280100000
- date-end: 2025-06-12
- time-end: 11:10:39.260800000
- obs_id: A13_037T01_9000006476
- exposure: 4669.3177985
- 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_52502cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52502cztM0_level2_quad_clean.evt
|
| Size (bytes) | 782,277,120 | 91,828,800 |
| Size | 746.0 MB
| 87.6 MB
|
| Events in quadrant A | 3,441,552 | 676,292 |
| Events in quadrant B | 10,670,755 | 471,550 |
| Events in quadrant C | 6,553,662 | 588,138 |
| Events in quadrant D | 7,729,368 | 538,236 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15303 | 1 |
| B | 0 | 36602 | 0 |
| C | 0 | 24520 | 0 |
| D | 0 | 28050 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7262 | 26 | 0.358028% |
| B | 7263 | 2739 | 37.711689% |
| C | 7263 | 762 | 10.491532% |
| D | 7263 | 921 | 12.680710% |
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 | 7262 | 7262 | 11 | 11 | 0.15% | 0.15% |  |
| B | 7263 | 7263 | 2483 | 2483 | 34.19% | 34.19% |  |
| C | 7263 | 7263 | 708 | 708 | 9.75% | 9.75% |  |
| D | 7262 | 7262 | 917 | 917 | 12.63% | 12.63% |  |
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 | 11 | 3 | 114799 | 601.39 | 767 | 747 | 189.6 |
| A | 8 | 9 | 92644 | 484.56 | 767 | 747 | 189.6 |
| A | 3 | 46 | 75152 | 392.33 | 767 | 747 | 189.6 |
| B | 10 | 44 | 5037847 | 39573.62 | 594 | 572 | 127.3 |
| B | 10 | 254 | 1853558 | 14557.35 | 594 | 572 | 127.3 |
| B | 7 | 0 | 883621 | 6937.37 | 594 | 572 | 127.3 |
| C | 15 | 224 | 2448050 | 12687.57 | 708 | 702 | 192.9 |
| C | 13 | 3 | 330976 | 1712.21 | 708 | 702 | 192.9 |
| C | 1 | 93 | 317897 | 1644.4 | 708 | 702 | 192.9 |
| D | 15 | 93 | 2224428 | 11354.89 | 699 | 668 | 195.8 |
| D | 6 | 42 | 1496726 | 7639.12 | 699 | 668 | 195.8 |
| D | 7 | 96 | 612052 | 3121.83 | 699 | 668 | 195.8 |
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 |  |