Observation information
- date-obs: 2026-06-28
- time-obs: 05:52:44.105000000
- date-end: 2026-06-28
- time-end: 07:54:40.082500000
- obs_id: A14_042T02_9000006586
- exposure: 1313.21672195
- 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_58162cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58162cztM0_level2_quad_clean.evt
|
| Size (bytes) | 656,945,280 | 78,016,320 |
| Size | 626.5 MB
| 74.4 MB
|
| Events in quadrant A | 2,881,659 | 630,545 |
| Events in quadrant B | 14,144,283 | 145,113 |
| Events in quadrant C | 3,037,795 | 599,840 |
| Events in quadrant D | 3,768,737 | 551,794 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12817 | 1 |
| B | 0 | 46394 | 1 |
| C | 0 | 13424 | 1 |
| D | 0 | 15318 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6236 | 82 | 1.314945% |
| B | 6237 | 5041 | 80.824114% |
| C | 6237 | 80 | 1.282668% |
| D | 6237 | 227 | 3.639570% |
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 | 7316 | 6236 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7316 | 6236 | 4843 | 4843 | 66.20% | 77.66% |  |
| C | 7317 | 6237 | 13 | 13 | 0.18% | 0.21% |  |
| D | 7317 | 6237 | 151 | 151 | 2.06% | 2.42% |  |
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 | 11 | 3 | 50862 | 283.85 | 720 | 703 | 176.7 |
| A | 4 | 3 | 16526 | 89.54 | 720 | 703 | 176.7 |
| A | 6 | 226 | 12726 | 68.04 | 720 | 703 | 176.7 |
| B | 10 | 128 | 12928342 | 207304.27 | 285 | 276 | 62.4 |
| B | 4 | 201 | 14970 | 235.62 | 285 | 276 | 62.4 |
| B | 7 | 252 | 12903 | 202.48 | 285 | 276 | 62.4 |
| C | 12 | 252 | 121697 | 638.01 | 697 | 693 | 189.7 |
| C | 14 | 96 | 115789 | 606.86 | 697 | 693 | 189.7 |
| C | 12 | 254 | 44209 | 229.44 | 697 | 693 | 189.7 |
| D | 7 | 222 | 341805 | 1755.86 | 689 | 659 | 194.3 |
| D | 2 | 249 | 133604 | 684.26 | 689 | 659 | 194.3 |
| D | 8 | 160 | 127039 | 650.47 | 689 | 659 | 194.3 |
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 |  |