Observation information
- date-obs: 2025-06-08
- time-obs: 23:28:45.123500000
- date-end: 2025-06-09
- time-end: 01:35:52.100800000
- obs_id: A13_037T01_9000006476
- exposure: 4187.35076708
- 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_52452cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52452cztM0_level2_quad_clean.evt
|
| Size (bytes) | 757,762,560 | 85,040,640 |
| Size | 722.7 MB
| 81.1 MB
|
| Events in quadrant A | 3,045,037 | 645,296 |
| Events in quadrant B | 3,281,287 | 692,012 |
| Events in quadrant C | 10,123,753 | 396,830 |
| Events in quadrant D | 11,099,084 | 389,693 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13873 | 2 |
| B | 0 | 14471 | 2 |
| C | 0 | 34587 | 2 |
| D | 0 | 37523 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6467 | 41 | 0.633988% |
| B | 6468 | 62 | 0.958565% |
| C | 6468 | 2511 | 38.821892% |
| D | 6468 | 2479 | 38.327149% |
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 | 7627 | 6468 | 17 | 17 | 0.22% | 0.26% |  |
| B | 7628 | 6469 | 20 | 20 | 0.26% | 0.31% |  |
| C | 7628 | 6468 | 2202 | 2202 | 28.87% | 34.04% |  |
| D | 7628 | 6468 | 2685 | 2685 | 35.20% | 41.51% |  |
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 | 13 | 248 | 69523 | 403.28 | 688 | 672 | 170.7 |
| A | 10 | 253 | 51803 | 299.49 | 688 | 672 | 170.7 |
| A | 12 | 17 | 48769 | 281.72 | 688 | 672 | 170.7 |
| B | 4 | 81 | 141722 | 957.3 | 686 | 659 | 147.4 |
| B | 0 | 213 | 138241 | 933.68 | 686 | 659 | 147.4 |
| B | 4 | 171 | 58605 | 393.24 | 686 | 659 | 147.4 |
| C | 15 | 224 | 4906987 | 32692.61 | 538 | 533 | 150.1 |
| C | 1 | 45 | 1056169 | 7033.9 | 538 | 533 | 150.1 |
| C | 15 | 248 | 826410 | 5502.97 | 538 | 533 | 150.1 |
| D | 6 | 42 | 5103877 | 31521.76 | 561 | 534 | 161.9 |
| D | 12 | 17 | 1271811 | 7852.28 | 561 | 534 | 161.9 |
| D | 15 | 93 | 875771 | 5406.07 | 561 | 534 | 161.9 |
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 |  |