Observation information
- date-obs: 2025-09-18
- time-obs: 01:03:17.709700000
- date-end: 2025-09-18
- time-end: 03:13:40.692000000
- obs_id: A14_057T04_9000006508
- exposure: 1298.50112259
- sourceid: Abell_2142
- observer: divya_astro
- ra_pnt: 239.5833
- dec_pnt: 27.23341
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_057T04_9000006508_53953cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53953cztM0_level2_quad_clean.evt
|
| Size (bytes) | 844,666,560 | 86,912,640 |
| Size | 805.5 MB
| 82.9 MB
|
| Events in quadrant A | 4,091,053 | 690,518 |
| Events in quadrant B | 4,353,717 | 727,528 |
| Events in quadrant C | 7,146,282 | 578,839 |
| Events in quadrant D | 15,086,865 | 108,243 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17509 | 2 |
| B | 0 | 18260 | 2 |
| C | 0 | 26690 | 3 |
| D | 0 | 50073 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7569 | 375 | 4.954419% |
| B | 7569 | 474 | 6.262386% |
| C | 7568 | 1373 | 18.142178% |
| D | 7568 | 6417 | 84.791226% |
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 | 7719 | 7573 | 50 | 50 | 0.65% | 0.66% |  |
| B | 7719 | 7573 | 72 | 72 | 0.93% | 0.95% |  |
| C | 7718 | 7572 | 1084 | 1084 | 14.05% | 14.32% |  |
| D | 7718 | 7570 | 4165 | 4165 | 53.96% | 55.02% |  |
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 | 15 | 174 | 289174 | 1389.07 | 852 | 830 | 207.6 |
| A | 12 | 115 | 146310 | 700.84 | 852 | 830 | 207.6 |
| A | 0 | 8 | 61246 | 291.05 | 852 | 830 | 207.6 |
| B | 0 | 213 | 508199 | 2783.86 | 846 | 814 | 182.3 |
| B | 4 | 171 | 142335 | 776.48 | 846 | 814 | 182.3 |
| B | 0 | 155 | 114106 | 621.6 | 846 | 814 | 182.3 |
| C | 1 | 241 | 2362948 | 10978.08 | 787 | 779 | 215.2 |
| C | 13 | 3 | 506309 | 2349.43 | 787 | 779 | 215.2 |
| C | 9 | 38 | 499468 | 2317.64 | 787 | 779 | 215.2 |
| D | 8 | 176 | 12782829 | 147554.57 | 298 | 284 | 86.6 |
| D | 5 | 113 | 480311 | 5541.16 | 298 | 284 | 86.6 |
| D | 6 | 239 | 127487 | 1468.36 | 298 | 284 | 86.6 |
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 |  |