Observation information
- date-obs: 2026-06-25
- time-obs: 10:14:56.786900000
- date-end: 2026-06-25
- time-end: 12:20:49.768800000
- obs_id: A14_042T02_9000006586
- exposure: 1569.94793218
- 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_58120cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58120cztM0_level2_quad_clean.evt
|
| Size (bytes) | 776,816,640 | 80,933,760 |
| Size | 740.8 MB
| 77.2 MB
|
| Events in quadrant A | 3,138,760 | 666,859 |
| Events in quadrant B | 7,644,519 | 558,137 |
| Events in quadrant C | 3,064,376 | 630,250 |
| Events in quadrant D | 14,410,220 | 147,680 |
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 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13500 | 1 |
| B | 0 | 27066 | 2 |
| C | 0 | 13488 | 1 |
| D | 0 | 47255 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6408 | 106 | 1.654182% |
| B | 6408 | 1652 | 25.780275% |
| C | 6408 | 80 | 1.248439% |
| D | 6408 | 5036 | 78.589263% |
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 | 7553 | 6409 | 8 | 8 | 0.11% | 0.12% |  |
| B | 7553 | 6409 | 1232 | 1232 | 16.31% | 19.22% |  |
| C | 7553 | 6409 | 6 | 6 | 0.08% | 0.09% |  |
| D | 7553 | 6409 | 4703 | 4703 | 62.27% | 73.38% |  |
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 | 251 | 71895 | 383.49 | 756 | 736 | 185.6 |
| A | 11 | 3 | 58266 | 310.04 | 756 | 736 | 185.6 |
| A | 3 | 245 | 26359 | 138.09 | 756 | 736 | 185.6 |
| B | 10 | 128 | 4741675 | 33140.14 | 666 | 641 | 143.1 |
| B | 0 | 153 | 59497 | 411.4 | 666 | 641 | 143.1 |
| B | 5 | 185 | 55958 | 386.67 | 666 | 641 | 143.1 |
| C | 1 | 16 | 138288 | 702.57 | 722 | 715 | 195.8 |
| C | 12 | 250 | 47857 | 240.75 | 722 | 715 | 195.8 |
| C | 2 | 12 | 31857 | 159.04 | 722 | 715 | 195.8 |
| D | 12 | 110 | 12201161 | 99644.85 | 431 | 414 | 122.4 |
| D | 7 | 222 | 168476 | 1372.58 | 431 | 414 | 122.4 |
| D | 3 | 224 | 80022 | 650.17 | 431 | 414 | 122.4 |
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 |  |