Observation information
- date-obs: 2026-06-24
- time-obs: 16:42:16.970300000
- date-end: 2026-06-24
- time-end: 18:58:07.945500000
- obs_id: A14_042T02_9000006586
- exposure: 5203.30563706
- 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_58109cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58109cztM0_level2_quad_clean.evt
|
| Size (bytes) | 790,580,160 | 98,032,320 |
| Size | 754.0 MB
| 93.5 MB
|
| Events in quadrant A | 3,396,927 | 732,767 |
| Events in quadrant B | 11,267,826 | 538,982 |
| Events in quadrant C | 3,412,505 | 694,021 |
| Events in quadrant D | 10,608,854 | 482,339 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15525 | 3 |
| B | 0 | 38667 | 2 |
| C | 0 | 15765 | 2 |
| D | 0 | 36719 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7470 | 29 | 0.388220% |
| B | 7470 | 2609 | 34.926372% |
| C | 7470 | 17 | 0.227577% |
| D | 7470 | 2238 | 29.959839% |
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 | 7775 | 7471 | 1 | 1 | 0.01% | 0.01% |  |
| B | 7775 | 7471 | 2131 | 2131 | 27.41% | 28.52% |  |
| C | 7775 | 7471 | 4 | 4 | 0.05% | 0.05% |  |
| D | 7775 | 7471 | 2197 | 2197 | 28.26% | 29.41% |  |
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 | 10 | 251 | 76590 | 365.48 | 838 | 816 | 207.3 |
| A | 11 | 3 | 28097 | 131.59 | 838 | 816 | 207.3 |
| A | 4 | 236 | 17667 | 81.28 | 838 | 816 | 207.3 |
| B | 10 | 128 | 4581725 | 29584.76 | 717 | 689 | 154.8 |
| B | 5 | 172 | 3393029 | 21908.05 | 717 | 689 | 154.8 |
| B | 5 | 185 | 154372 | 992.5 | 717 | 689 | 154.8 |
| C | 12 | 252 | 116513 | 522.11 | 807 | 801 | 221.6 |
| C | 15 | 208 | 71244 | 317.85 | 807 | 801 | 221.6 |
| C | 9 | 38 | 36012 | 158.88 | 807 | 801 | 221.6 |
| D | 0 | 160 | 4654393 | 22723.35 | 720 | 691 | 204.8 |
| D | 12 | 110 | 2810923 | 13721.96 | 720 | 691 | 204.8 |
| D | 12 | 248 | 82052 | 397.27 | 720 | 691 | 204.8 |
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 |  |