Observation information
- date-obs: 2025-09-17
- time-obs: 21:43:14.737800000
- date-end: 2025-09-17
- time-end: 23:51:12.719900000
- obs_id: A14_057T04_9000006508
- exposure: 1138.72308642
- 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_53951cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53951cztM0_level2_quad_clean.evt
|
| Size (bytes) | 779,302,080 | 78,105,600 |
| Size | 743.2 MB
| 74.5 MB
|
| Events in quadrant A | 3,303,154 | 640,878 |
| Events in quadrant B | 3,729,344 | 672,091 |
| Events in quadrant C | 7,306,667 | 496,092 |
| Events in quadrant D | 14,000,391 | 100,053 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14430 | 1 |
| B | 0 | 15798 | 2 |
| C | 0 | 26187 | 1 |
| D | 0 | 46063 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 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 | 6534 | 67 | 1.025406% |
| B | 6533 | 197 | 3.015460% |
| C | 6533 | 1376 | 21.062299% |
| D | 6533 | 5523 | 84.540028% |
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 | 7679 | 6535 | 48 | 48 | 0.63% | 0.73% |  |
| B | 7678 | 6534 | 84 | 84 | 1.09% | 1.29% |  |
| C | 7678 | 6534 | 1234 | 1234 | 16.07% | 18.89% |  |
| D | 7677 | 6530 | 3994 | 3994 | 52.03% | 61.16% |  |
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 | 12 | 115 | 174593 | 994.84 | 708 | 691 | 174.8 |
| A | 15 | 174 | 135314 | 770.14 | 708 | 691 | 174.8 |
| A | 3 | 14 | 35769 | 200.67 | 708 | 691 | 174.8 |
| B | 0 | 213 | 536533 | 3533.9 | 700 | 676 | 151.6 |
| B | 0 | 155 | 174863 | 1148.74 | 700 | 676 | 151.6 |
| B | 5 | 185 | 73416 | 479.71 | 700 | 676 | 151.6 |
| C | 1 | 241 | 2523101 | 14580.86 | 627 | 622 | 173.0 |
| C | 13 | 3 | 1497228 | 8650.94 | 627 | 622 | 173.0 |
| C | 9 | 38 | 386819 | 2232.36 | 627 | 622 | 173.0 |
| D | 8 | 176 | 11926902 | 166061.41 | 243 | 231 | 71.8 |
| D | 10 | 172 | 256705 | 3571.02 | 243 | 231 | 71.8 |
| D | 6 | 239 | 207707 | 2888.8 | 243 | 231 | 71.8 |
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 |  |