Observation information
- date-obs: 2026-06-25
- time-obs: 17:00:36.722900000
- date-end: 2026-06-25
- time-end: 19:15:16.701400000
- obs_id: A14_042T02_9000006586
- exposure: 1331.54969966
- 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_58124cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58124cztM0_level2_quad_clean.evt
|
| Size (bytes) | 965,620,800 | 92,350,080 |
| Size | 920.9 MB
| 88.1 MB
|
| Events in quadrant A | 3,572,853 | 774,952 |
| Events in quadrant B | 9,958,241 | 629,485 |
| Events in quadrant C | 3,869,014 | 731,168 |
| Events in quadrant D | 17,732,148 | 112,406 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 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 | 16419 | 1 |
| B | 0 | 34994 | 1 |
| C | 0 | 17436 | 1 |
| D | 0 | 57931 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7889 | 34 | 0.430980% |
| B | 7889 | 2029 | 25.719356% |
| C | 7889 | 51 | 0.646470% |
| D | 7889 | 6754 | 85.612879% |
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 | 7904 | 7890 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7904 | 7890 | 1322 | 1322 | 16.73% | 16.76% |  |
| C | 7904 | 7890 | 32 | 32 | 0.40% | 0.41% |  |
| D | 7904 | 7889 | 6286 | 6286 | 79.53% | 79.68% |  |
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 | 43744 | 192.69 | 891 | 867 | 222.5 |
| A | 10 | 251 | 31599 | 138.11 | 891 | 867 | 222.5 |
| A | 4 | 3 | 24470 | 106.07 | 891 | 867 | 222.5 |
| B | 10 | 128 | 3397217 | 20088.68 | 783 | 750 | 169.1 |
| B | 5 | 172 | 2707415 | 16008.79 | 783 | 750 | 169.1 |
| B | 10 | 247 | 187247 | 1103.05 | 783 | 750 | 169.1 |
| C | 6 | 223 | 234665 | 999.97 | 855 | 846 | 233.8 |
| C | 15 | 208 | 112079 | 475.71 | 855 | 846 | 233.8 |
| C | 9 | 38 | 78393 | 331.64 | 855 | 846 | 233.8 |
| D | 12 | 110 | 15369112 | 106326.07 | 503 | 482 | 144.5 |
| D | 8 | 160 | 131878 | 909.05 | 503 | 482 | 144.5 |
| D | 8 | 240 | 73906 | 507.98 | 503 | 482 | 144.5 |
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 |  |