Observation information
- date-obs: 2025-06-09
- time-obs: 03:09:55.844300000
- date-end: 2025-06-09
- time-end: 05:06:08.063700000
- obs_id: A13_037T01_9000006476
- exposure: 4074.24766719
- 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_52454cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52454cztM0_level2_quad_clean.evt
|
| Size (bytes) | 402,073,920 | 64,359,360 |
| Size | 383.4 MB
| 61.4 MB
|
| Events in quadrant A | 2,128,784 | 438,573 |
| Events in quadrant B | 3,239,086 | 463,726 |
| Events in quadrant C | 4,342,830 | 375,568 |
| Events in quadrant D | 4,818,941 | 350,958 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 5 | 1 |
| C | 0 | 7 | 2 |
| D | 0 | 6 | 3 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10000 | 224 |
| B | 0 | 13404 | 361 |
| C | 0 | 16311 | 261 |
| D | 0 | 18199 | 720 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 96 | 2 |
| B | 0 | 95 | 2 |
| C | 0 | 96 | 2 |
| D | 0 | 96 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 4560 | 24 | 0.526316% |
| B | 4552 | 230 | 5.052724% |
| C | 4552 | 552 | 12.126538% |
| D | 4532 | 539 | 11.893204% |
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 | 6973 | 4589 | 10 | 10 | 0.14% | 0.22% |  |
| B | 6974 | 4564 | 32 | 32 | 0.46% | 0.70% |  |
| C | 6974 | 4578 | 554 | 554 | 7.94% | 12.10% |  |
| D | 6974 | 4554 | 571 | 571 | 8.19% | 12.54% |  |
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 | 4 | 61 | 92015 | 760.87 | 485 | 472 | 120.3 |
| A | 12 | 17 | 36572 | 300.05 | 485 | 472 | 120.3 |
| A | 11 | 3 | 25342 | 206.71 | 485 | 472 | 120.3 |
| B | 5 | 172 | 1004866 | 9737.28 | 476 | 460 | 103.2 |
| B | 4 | 171 | 151111 | 1460.5 | 476 | 460 | 103.2 |
| B | 0 | 213 | 61651 | 593.22 | 476 | 460 | 103.2 |
| C | 15 | 231 | 993754 | 8149.8 | 442 | 437 | 121.9 |
| C | 1 | 45 | 410585 | 3365.11 | 442 | 437 | 121.9 |
| C | 12 | 254 | 332907 | 2727.8 | 442 | 437 | 121.9 |
| D | 15 | 93 | 1101466 | 8831.83 | 437 | 419 | 124.7 |
| D | 6 | 42 | 1090074 | 8740.46 | 437 | 419 | 124.7 |
| D | 12 | 17 | 371552 | 2976.97 | 437 | 419 | 124.7 |
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 |  |