Observation information
- date-obs: 2026-06-23
- time-obs: 23:26:22.144200000
- date-end: 2026-06-24
- time-end: 01:37:43.123400000
- obs_id: A14_042T02_9000006586
- exposure: 5133.1568929
- 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_58099cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58099cztM0_level2_quad_clean.evt
|
| Size (bytes) | 802,581,120 | 98,994,240 |
| Size | 765.4 MB
| 94.4 MB
|
| Events in quadrant A | 4,075,864 | 691,577 |
| Events in quadrant B | 10,860,393 | 519,703 |
| Events in quadrant C | 3,999,611 | 671,400 |
| Events in quadrant D | 10,193,266 | 591,765 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17672 | 2 |
| B | 0 | 37450 | 1 |
| C | 0 | 17289 | 1 |
| D | 0 | 35568 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7505 | 287 | 3.824117% |
| B | 7505 | 2671 | 35.589607% |
| C | 7505 | 96 | 1.279147% |
| D | 7506 | 710 | 9.459099% |
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 | 7880 | 7506 | 229 | 229 | 2.91% | 3.05% |  |
| B | 7880 | 7505 | 2153 | 2153 | 27.32% | 28.69% |  |
| C | 7880 | 7506 | 76 | 76 | 0.96% | 1.01% |  |
| D | 7881 | 7506 | 779 | 779 | 9.88% | 10.38% |  |
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 | 253 | 661974 | 3298.66 | 811 | 792 | 200.4 |
| A | 10 | 251 | 203728 | 1012.46 | 811 | 792 | 200.4 |
| A | 13 | 248 | 22754 | 109.57 | 811 | 792 | 200.4 |
| B | 10 | 128 | 6598012 | 42638.03 | 716 | 691 | 154.7 |
| B | 5 | 172 | 1051741 | 6792.86 | 716 | 691 | 154.7 |
| B | 5 | 185 | 126313 | 811.89 | 716 | 691 | 154.7 |
| C | 12 | 252 | 577226 | 2649.46 | 799 | 794 | 217.6 |
| C | 9 | 38 | 115203 | 525.86 | 799 | 794 | 217.6 |
| C | 15 | 208 | 86871 | 395.64 | 799 | 794 | 217.6 |
| D | 12 | 110 | 6525124 | 29736.3 | 772 | 738 | 219.4 |
| D | 12 | 1 | 381476 | 1735.3 | 772 | 738 | 219.4 |
| D | 2 | 249 | 81328 | 367.31 | 772 | 738 | 219.4 |
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 |  |