Observation information
- date-obs: 2025-09-18
- time-obs: 16:44:57.582100000
- date-end: 2025-09-18
- time-end: 18:51:18.551200000
- obs_id: A14_057T04_9000006508
- exposure: 4055.74783331
- 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_53963cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53963cztM0_level2_quad_clean.evt
|
| Size (bytes) | 597,533,760 | 87,742,080 |
| Size | 569.9 MB
| 83.7 MB
|
| Events in quadrant A | 3,314,315 | 643,063 |
| Events in quadrant B | 3,773,038 | 671,193 |
| Events in quadrant C | 5,407,292 | 539,797 |
| Events in quadrant D | 9,130,888 | 359,609 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14248 | 3 |
| B | 0 | 15657 | 3 |
| C | 0 | 20276 | 3 |
| D | 0 | 31502 | 10 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6350 | 50 | 0.787402% |
| B | 6350 | 186 | 2.929134% |
| C | 6349 | 823 | 12.962671% |
| D | 6347 | 2426 | 38.222782% |
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 | 7546 | 6352 | 27 | 27 | 0.36% | 0.43% |  |
| B | 7545 | 6351 | 91 | 91 | 1.21% | 1.43% |  |
| C | 7545 | 6351 | 757 | 757 | 10.03% | 11.92% |  |
| D | 7544 | 6348 | 1903 | 1903 | 25.23% | 29.98% |  |
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 | 7 | 14 | 140967 | 803.53 | 696 | 678 | 174.6 |
| A | 14 | 235 | 86352 | 490.71 | 696 | 678 | 174.6 |
| A | 15 | 174 | 62103 | 351.82 | 696 | 678 | 174.6 |
| B | 0 | 213 | 364987 | 2517.55 | 688 | 665 | 144.7 |
| B | 8 | 128 | 197118 | 1357.53 | 688 | 665 | 144.7 |
| B | 5 | 250 | 181748 | 1251.32 | 688 | 665 | 144.7 |
| C | 1 | 241 | 1759573 | 9963.81 | 639 | 632 | 176.5 |
| C | 4 | 5 | 502436 | 2842.55 | 639 | 632 | 176.5 |
| C | 13 | 3 | 217823 | 1230.31 | 639 | 632 | 176.5 |
| D | 8 | 176 | 5576286 | 38634.09 | 498 | 475 | 144.3 |
| D | 6 | 239 | 523798 | 3626.04 | 498 | 475 | 144.3 |
| D | 7 | 70 | 362993 | 2511.84 | 498 | 475 | 144.3 |
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 |  |