Observation information
- date-obs: 2026-06-23
- time-obs: 19:52:36.178700000
- date-end: 2026-06-23
- time-end: 22:10:42.157100000
- obs_id: A14_042T02_9000006586
- exposure: 4394.61427653
- 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_58096cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58096cztM0_level2_quad_clean.evt
|
| Size (bytes) | 849,971,520 | 107,009,280 |
| Size | 810.6 MB
| 102.1 MB
|
| Events in quadrant A | 3,660,515 | 805,163 |
| Events in quadrant B | 14,632,109 | 455,648 |
| Events in quadrant C | 4,098,903 | 759,794 |
| Events in quadrant D | 8,430,715 | 644,532 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 166 | 0 |
| B | 0 | 166 | 0 |
| C | 0 | 166 | 0 |
| D | 0 | 166 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17063 | 2 |
| B | 0 | 49158 | 1 |
| C | 0 | 18016 | 1 |
| D | 0 | 30742 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8270 | 13 | 0.157195% |
| B | 8271 | 4365 | 52.774755% |
| C | 8271 | 41 | 0.495708% |
| D | 8271 | 1059 | 12.803772% |
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 | 8285 | 8271 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8286 | 8272 | 3407 | 3407 | 41.12% | 41.19% |  |
| C | 8286 | 8272 | 36 | 36 | 0.43% | 0.44% |  |
| D | 8286 | 8272 | 1171 | 1171 | 14.13% | 14.16% |  |
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 | 11 | 21542 | 90.07 | 929 | 908 | 229.1 |
| A | 4 | 3 | 13089 | 53.17 | 929 | 908 | 229.1 |
| A | 3 | 61 | 11756 | 47.35 | 929 | 908 | 229.1 |
| B | 10 | 128 | 7978298 | 47957.87 | 765 | 735 | 166.3 |
| B | 5 | 172 | 3302418 | 19848.38 | 765 | 735 | 166.3 |
| B | 0 | 156 | 82404 | 490.96 | 765 | 735 | 166.3 |
| C | 12 | 252 | 288159 | 1188.64 | 891 | 883 | 241.7 |
| C | 15 | 208 | 97353 | 399.16 | 891 | 883 | 241.7 |
| C | 6 | 223 | 69126 | 282.36 | 891 | 883 | 241.7 |
| D | 12 | 110 | 4586524 | 18752.09 | 863 | 826 | 244.5 |
| D | 12 | 1 | 82879 | 335.54 | 863 | 826 | 244.5 |
| D | 8 | 240 | 63205 | 255.08 | 863 | 826 | 244.5 |
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 |  |