Observation information
- date-obs: 2025-09-18
- time-obs: 23:38:17.524900000
- date-end: 2025-09-19
- time-end: 01:48:50.495300000
- obs_id: A14_057T04_9000006508
- exposure: 6259.12062991
- 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_53967cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53967cztM0_level2_quad_clean.evt
|
| Size (bytes) | 565,274,880 | 99,290,880 |
| Size | 539.1 MB
| 94.7 MB
|
| Events in quadrant A | 3,808,352 | 657,698 |
| Events in quadrant B | 3,673,721 | 707,171 |
| Events in quadrant C | 5,635,673 | 602,440 |
| Events in quadrant D | 7,257,649 | 545,905 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16541 | 2 |
| B | 0 | 16115 | 2 |
| C | 0 | 21640 | 7 |
| D | 0 | 26519 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7078 | 221 | 3.122351% |
| B | 7078 | 211 | 2.981068% |
| C | 7077 | 576 | 8.139042% |
| D | 7077 | 997 | 14.087890% |
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 | 7753 | 7079 | 132 | 132 | 1.70% | 1.86% |  |
| B | 7753 | 7079 | 64 | 64 | 0.83% | 0.90% |  |
| C | 7752 | 7078 | 523 | 523 | 6.75% | 7.39% |  |
| D | 7752 | 7078 | 846 | 846 | 10.91% | 11.95% |  |
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 | 429333 | 2252.96 | 769 | 751 | 190.2 |
| A | 7 | 14 | 117435 | 613.38 | 769 | 751 | 190.2 |
| A | 12 | 17 | 77367 | 402.75 | 769 | 751 | 190.2 |
| B | 5 | 185 | 145535 | 885.86 | 766 | 739 | 163.5 |
| B | 4 | 171 | 125096 | 760.82 | 766 | 739 | 163.5 |
| B | 0 | 213 | 113923 | 692.46 | 766 | 739 | 163.5 |
| C | 1 | 241 | 1635270 | 8049.57 | 735 | 729 | 203.1 |
| C | 9 | 38 | 646577 | 3180.58 | 735 | 729 | 203.1 |
| C | 12 | 249 | 97526 | 476.69 | 735 | 729 | 203.1 |
| D | 8 | 176 | 2741733 | 13685.87 | 707 | 678 | 200.3 |
| D | 6 | 239 | 681375 | 3398.67 | 707 | 678 | 200.3 |
| D | 2 | 165 | 294048 | 1464.77 | 707 | 678 | 200.3 |
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 |  |