Observation information
- date-obs: 2025-09-14
- time-obs: 03:28:27.472800000
- date-end: 2025-09-14
- time-end: 05:34:40.456500000
- obs_id: A14_057T04_9000006508
- exposure: 229.003506422
- 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_53895cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53895cztM0_level2_quad_clean.evt
|
| Size (bytes) | 791,412,480 | 85,720,320 |
| Size | 754.7 MB
| 81.7 MB
|
| Events in quadrant A | 3,885,727 | 687,852 |
| Events in quadrant B | 3,791,964 | 732,125 |
| Events in quadrant C | 6,252,729 | 636,973 |
| Events in quadrant D | 14,782,843 | 19,793 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16981 | 2 |
| B | 0 | 16483 | 2 |
| C | 0 | 23766 | 2 |
| D | 0 | 49072 | 5 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7463 | 320 | 4.287820% |
| B | 7463 | 324 | 4.341418% |
| C | 7463 | 702 | 9.406405% |
| D | 7463 | 7285 | 97.614900% |
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 | 7573 | 7465 | 92 | 92 | 1.21% | 1.23% |  |
| B | 7573 | 7465 | 14 | 14 | 0.18% | 0.19% |  |
| C | 7573 | 7465 | 493 | 493 | 6.51% | 6.60% |  |
| D | 7572 | 7462 | 4073 | 4073 | 53.79% | 54.58% |  |
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 | 4 | 249 | 378649 | 1841.66 | 832 | 808 | 205.2 |
| A | 15 | 174 | 154897 | 751.05 | 832 | 808 | 205.2 |
| A | 10 | 253 | 38784 | 185.1 | 832 | 808 | 205.2 |
| B | 7 | 0 | 120348 | 681.23 | 820 | 790 | 175.5 |
| B | 0 | 213 | 118653 | 671.57 | 820 | 790 | 175.5 |
| B | 4 | 171 | 97381 | 550.37 | 820 | 790 | 175.5 |
| C | 15 | 224 | 2618690 | 12086.22 | 789 | 781 | 216.6 |
| C | 12 | 252 | 175339 | 805.89 | 789 | 781 | 216.6 |
| C | 15 | 209 | 80176 | 366.55 | 789 | 781 | 216.6 |
| D | 8 | 176 | 13829194 | 358558.76 | 129 | 122 | 38.6 |
| D | 6 | 239 | 181874 | 4712.45 | 129 | 122 | 38.6 |
| D | 7 | 70 | 61071 | 1580.28 | 129 | 122 | 38.6 |
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 |  |