Observation information
- date-obs: 2025-09-13
- time-obs: 20:31:14.533100000
- date-end: 2025-09-13
- time-end: 22:37:37.498500000
- obs_id: A14_057T04_9000006508
- exposure: 2525.21541601
- 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_53891cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53891cztM0_level2_quad_clean.evt
|
| Size (bytes) | 786,945,600 | 83,001,600 |
| Size | 750.5 MB
| 79.2 MB
|
| Events in quadrant A | 6,018,184 | 640,943 |
| Events in quadrant B | 3,400,386 | 689,966 |
| Events in quadrant C | 7,033,289 | 510,938 |
| Events in quadrant D | 12,187,299 | 228,093 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22354 | 2 |
| B | 0 | 14430 | 2 |
| C | 0 | 25324 | 2 |
| D | 0 | 40490 | 5 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 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 | 6344 | 193 | 3.042245% |
| B | 6344 | 87 | 1.371375% |
| C | 6344 | 1329 | 20.948928% |
| D | 6343 | 4013 | 63.266593% |
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 | 7584 | 6345 | 162 | 162 | 2.14% | 2.55% |  |
| B | 7584 | 6345 | 55 | 55 | 0.73% | 0.87% |  |
| C | 7584 | 6345 | 978 | 978 | 12.90% | 15.41% |  |
| D | 7582 | 6343 | 3378 | 3378 | 44.55% | 53.26% |  |
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 | 3043271 | 17605.97 | 699 | 684 | 172.8 |
| A | 4 | 249 | 116995 | 673.04 | 699 | 684 | 172.8 |
| A | 15 | 174 | 62985 | 360.51 | 699 | 684 | 172.8 |
| B | 10 | 245 | 216290 | 1431.3 | 700 | 675 | 150.6 |
| B | 5 | 185 | 156463 | 1034.16 | 700 | 675 | 150.6 |
| B | 0 | 213 | 43521 | 284.42 | 700 | 675 | 150.6 |
| C | 15 | 224 | 3694643 | 21754.59 | 616 | 610 | 169.8 |
| C | 4 | 5 | 555392 | 3267.18 | 616 | 610 | 169.8 |
| C | 13 | 3 | 125013 | 732.62 | 616 | 610 | 169.8 |
| D | 8 | 176 | 8473168 | 76819.08 | 381 | 364 | 110.3 |
| D | 7 | 70 | 1502038 | 13615.0 | 381 | 364 | 110.3 |
| D | 2 | 172 | 239221 | 2165.61 | 381 | 364 | 110.3 |
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 |  |