Observation information
- date-obs: 2025-09-15
- time-obs: 22:51:14.122600000
- date-end: 2025-09-16
- time-end: 00:58:41.105000000
- obs_id: A14_057T04_9000006508
- exposure: 4184.97761142
- 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_53922cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53922cztM0_level2_quad_clean.evt
|
| Size (bytes) | 569,741,760 | 89,873,280 |
| Size | 543.3 MB
| 85.7 MB
|
| Events in quadrant A | 2,989,250 | 643,709 |
| Events in quadrant B | 3,656,841 | 679,076 |
| Events in quadrant C | 4,484,911 | 568,163 |
| Events in quadrant D | 9,451,253 | 374,733 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13657 | 1 |
| B | 0 | 15595 | 1 |
| C | 0 | 18053 | 1 |
| D | 0 | 32591 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6527 | 36 | 0.551555% |
| B | 6528 | 149 | 2.282475% |
| C | 6528 | 530 | 8.118873% |
| D | 6528 | 2504 | 38.357843% |
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 | 7647 | 6528 | 8 | 8 | 0.10% | 0.12% |  |
| B | 7648 | 6529 | 59 | 59 | 0.77% | 0.90% |  |
| C | 7647 | 6528 | 528 | 528 | 6.90% | 8.09% |  |
| D | 7647 | 6528 | 2297 | 2297 | 30.04% | 35.19% |  |
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 | 68457 | 386.72 | 715 | 699 | 175.2 |
| A | 13 | 254 | 19109 | 105.07 | 715 | 699 | 175.2 |
| A | 0 | 8 | 16014 | 87.41 | 715 | 699 | 175.2 |
| B | 5 | 250 | 234012 | 1547.82 | 709 | 683 | 150.7 |
| B | 5 | 185 | 187164 | 1237.05 | 709 | 683 | 150.7 |
| B | 5 | 236 | 136787 | 902.86 | 709 | 683 | 150.7 |
| C | 1 | 241 | 1423104 | 7734.11 | 668 | 660 | 183.9 |
| C | 13 | 3 | 132891 | 718.97 | 668 | 660 | 183.9 |
| C | 12 | 2 | 107705 | 582.02 | 668 | 660 | 183.9 |
| D | 8 | 176 | 6563055 | 43537.7 | 521 | 497 | 150.7 |
| D | 2 | 165 | 314731 | 2084.71 | 521 | 497 | 150.7 |
| D | 3 | 144 | 233014 | 1542.58 | 521 | 497 | 150.7 |
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 |  |