Observation information
- date-obs: 2026-06-23
- time-obs: 18:08:57.195100000
- date-end: 2026-06-23
- time-end: 20:26:41.162600000
- obs_id: A14_042T02_9000006586
- exposure: 4426.05850375
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58095cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58095cztM0_level2_quad_clean.evt
|
| Size (bytes) | 858,274,560 | 101,373,120 |
| Size | 818.5 MB
| 96.7 MB
|
| Events in quadrant A | 3,568,733 | 771,659 |
| Events in quadrant B | 13,809,281 | 468,124 |
| Events in quadrant C | 4,060,418 | 725,519 |
| Events in quadrant D | 9,721,004 | 554,987 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16432 | 2 |
| B | 0 | 46522 | 2 |
| C | 0 | 17690 | 2 |
| D | 0 | 34524 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7895 | 25 | 0.316656% |
| B | 7895 | 3904 | 49.449018% |
| C | 7895 | 97 | 1.228626% |
| D | 7894 | 1602 | 20.293894% |
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 | 7910 | 7896 | 1 | 1 | 0.01% | 0.01% |  |
| B | 7910 | 7896 | 3242 | 3242 | 40.99% | 41.06% |  |
| C | 7910 | 7896 | 80 | 80 | 1.01% | 1.01% |  |
| D | 7909 | 7895 | 1696 | 1696 | 21.44% | 21.48% |  |
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 | 3 | 61 | 40940 | 183.98 | 885 | 861 | 217.8 |
| A | 2 | 79 | 28946 | 128.92 | 885 | 861 | 217.8 |
| A | 3 | 11 | 19523 | 85.67 | 885 | 861 | 217.8 |
| B | 10 | 128 | 9121016 | 56351.69 | 749 | 719 | 161.8 |
| B | 5 | 172 | 1398946 | 8639.24 | 749 | 719 | 161.8 |
| B | 0 | 156 | 56509 | 344.71 | 749 | 719 | 161.8 |
| C | 12 | 252 | 225951 | 973.62 | 849 | 841 | 231.2 |
| C | 12 | 254 | 198715 | 855.82 | 849 | 841 | 231.2 |
| C | 13 | 3 | 141383 | 607.85 | 849 | 841 | 231.2 |
| D | 12 | 110 | 6009536 | 26591.68 | 797 | 761 | 226.0 |
| D | 8 | 240 | 180996 | 797.63 | 797 | 761 | 226.0 |
| D | 12 | 1 | 82422 | 361.39 | 797 | 761 | 226.0 |
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 |  |