Observation information
- date-obs: 2026-06-25
- time-obs: 15:20:36.738700000
- date-end: 2026-06-25
- time-end: 17:28:59.718300000
- obs_id: A14_042T02_9000006586
- exposure: 888.710424364
- 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_58123cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58123cztM0_level2_quad_clean.evt
|
| Size (bytes) | 883,874,880 | 83,793,600 |
| Size | 842.9 MB
| 79.9 MB
|
| Events in quadrant A | 3,261,527 | 704,742 |
| Events in quadrant B | 8,888,559 | 597,921 |
| Events in quadrant C | 3,381,697 | 668,054 |
| Events in quadrant D | 16,639,105 | 75,253 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14862 | 2 |
| B | 0 | 31193 | 2 |
| C | 0 | 15311 | 2 |
| D | 0 | 54093 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7052 | 57 | 0.808281% |
| B | 7052 | 1707 | 24.205899% |
| C | 7052 | 26 | 0.368690% |
| D | 7052 | 6338 | 89.875213% |
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 | 7667 | 7054 | 14 | 14 | 0.18% | 0.20% |  |
| B | 7667 | 7054 | 1353 | 1353 | 17.65% | 19.18% |  |
| C | 7667 | 7054 | 6 | 6 | 0.08% | 0.09% |  |
| D | 7667 | 7053 | 6012 | 6012 | 78.41% | 85.24% |  |
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 | 245 | 62997 | 315.3 | 798 | 777 | 197.3 |
| A | 11 | 3 | 50362 | 251.28 | 798 | 777 | 197.3 |
| A | 3 | 14 | 21189 | 103.44 | 798 | 777 | 197.3 |
| B | 5 | 172 | 3419443 | 21771.96 | 724 | 697 | 157.0 |
| B | 10 | 128 | 2264771 | 14418.54 | 724 | 697 | 157.0 |
| B | 0 | 79 | 84733 | 535.18 | 724 | 697 | 157.0 |
| C | 9 | 38 | 77637 | 363.33 | 770 | 760 | 211.6 |
| C | 15 | 208 | 68791 | 321.52 | 770 | 760 | 211.6 |
| C | 12 | 252 | 61747 | 288.23 | 770 | 760 | 211.6 |
| D | 12 | 110 | 14077908 | 116741.56 | 419 | 400 | 120.6 |
| D | 8 | 160 | 751054 | 6225.0 | 419 | 400 | 120.6 |
| D | 5 | 173 | 28521 | 233.2 | 419 | 400 | 120.6 |
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 |  |