Observation information
- date-obs: 2025-06-07
- time-obs: 12:39:54.480800000
- date-end: 2025-06-07
- time-end: 14:54:01.457500000
- obs_id: A13_037T01_9000006476
- exposure: 4683.33532888
- 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_52430cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52430cztM0_level2_quad_clean.evt
|
| Size (bytes) | 870,744,960 | 102,375,360 |
| Size | 830.4 MB
| 97.6 MB
|
| Events in quadrant A | 4,292,108 | 746,881 |
| Events in quadrant B | 3,891,404 | 801,126 |
| Events in quadrant C | 9,157,494 | 602,547 |
| Events in quadrant D | 14,268,429 | 389,123 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18442 | 0 |
| B | 0 | 17366 | 0 |
| C | 0 | 32830 | 0 |
| D | 0 | 47925 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8047 | 90 | 1.118429% |
| B | 8047 | 73 | 0.907170% |
| C | 8048 | 1435 | 17.830517% |
| D | 8047 | 3760 | 46.725488% |
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 | 8047 | 8047 | 56 | 56 | 0.70% | 0.70% |  |
| B | 8047 | 8047 | 46 | 46 | 0.57% | 0.57% |  |
| C | 8048 | 8048 | 1229 | 1229 | 15.27% | 15.27% |  |
| D | 8046 | 8046 | 3387 | 3387 | 42.10% | 42.10% |  |
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 | 195365 | 923.82 | 858 | 838 | 210.6 |
| A | 4 | 3 | 178784 | 845.08 | 858 | 838 | 210.6 |
| A | 7 | 206 | 154772 | 731.04 | 858 | 838 | 210.6 |
| B | 7 | 236 | 105413 | 576.03 | 846 | 817 | 181.6 |
| B | 4 | 81 | 86399 | 471.32 | 846 | 817 | 181.6 |
| B | 10 | 247 | 56656 | 307.52 | 846 | 817 | 181.6 |
| C | 15 | 231 | 1913087 | 9163.01 | 764 | 758 | 208.7 |
| C | 15 | 178 | 1847537 | 8848.92 | 764 | 758 | 208.7 |
| C | 15 | 224 | 765993 | 3666.66 | 764 | 758 | 208.7 |
| D | 12 | 2 | 3246270 | 17060.15 | 657 | 627 | 190.2 |
| D | 12 | 17 | 3233157 | 16991.22 | 657 | 627 | 190.2 |
| D | 12 | 18 | 1314518 | 6906.24 | 657 | 627 | 190.2 |
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 |  |