Observation information
- date-obs: 2025-09-12
- time-obs: 10:01:35.808700000
- date-end: 2025-09-12
- time-end: 15:27:25.768200000
- obs_id: A14_057T04_9000006508
- exposure: 13111.2506011
- 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_53871cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53871cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,727,740,800 | 241,706,880 |
| Size | 1.6 GB
| 230.5 MB
|
| Events in quadrant A | 11,470,614 | 1,687,328 |
| Events in quadrant B | 10,665,391 | 1,798,222 |
| Events in quadrant C | 25,207,334 | 1,126,391 |
| Events in quadrant D | 15,193,337 | 1,439,067 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 47020 | 3 |
| B | 0 | 44347 | 3 |
| C | 0 | 87751 | 3 |
| D | 0 | 57749 | 4 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 372 | 0 |
| B | 0 | 372 | 0 |
| C | 0 | 372 | 0 |
| D | 0 | 372 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18370 | 828 | 4.507349% |
| B | 18371 | 656 | 3.570845% |
| C | 18371 | 5865 | 31.925317% |
| D | 18370 | 1578 | 8.590093% |
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 | 19550 | 18373 | 439 | 439 | 2.25% | 2.39% |  |
| B | 19551 | 18374 | 208 | 208 | 1.06% | 1.13% |  |
| C | 19551 | 18373 | 4817 | 4817 | 24.64% | 26.22% |  |
| D | 19550 | 18373 | 1347 | 1347 | 6.89% | 7.33% |  |
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 | 3 | 62 | 1464784 | 2976.61 | 1992 | 1943 | 491.4 |
| A | 15 | 174 | 676109 | 1371.8 | 1992 | 1943 | 491.4 |
| A | 8 | 249 | 369408 | 747.72 | 1992 | 1943 | 491.4 |
| B | 0 | 213 | 738288 | 1755.5 | 1973 | 1906 | 419.5 |
| B | 5 | 185 | 506506 | 1202.94 | 1973 | 1906 | 419.5 |
| B | 5 | 172 | 381675 | 905.35 | 1973 | 1906 | 419.5 |
| C | 15 | 224 | 5499603 | 12080.71 | 1636 | 1623 | 455.1 |
| C | 1 | 241 | 4158461 | 9133.82 | 1636 | 1623 | 455.1 |
| C | 15 | 158 | 2996411 | 6580.44 | 1636 | 1623 | 455.1 |
| D | 8 | 176 | 4479494 | 8229.82 | 1904 | 1822 | 544.1 |
| D | 10 | 181 | 792623 | 1453.47 | 1904 | 1822 | 544.1 |
| D | 15 | 31 | 545243 | 998.79 | 1904 | 1822 | 544.1 |
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 |  |