Observation information
- date-obs: 2026-06-24
- time-obs: 04:33:57.925700000
- date-end: 2026-06-24
- time-end: 06:52:24.068100000
- obs_id: A14_042T02_9000006586
- exposure: 4897.13973385
- 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_58101cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58101cztM0_level2_quad_clean.evt
|
| Size (bytes) | 691,093,440 | 92,122,560 |
| Size | 659.1 MB
| 87.9 MB
|
| Events in quadrant A | 3,263,386 | 664,850 |
| Events in quadrant B | 8,416,931 | 584,520 |
| Events in quadrant C | 3,640,767 | 633,488 |
| Events in quadrant D | 9,725,684 | 424,656 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14632 | 3 |
| B | 0 | 29924 | 2 |
| C | 0 | 15644 | 2 |
| D | 0 | 33628 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6907 | 82 | 1.187201% |
| B | 6907 | 1529 | 22.136963% |
| C | 6907 | 90 | 1.303026% |
| D | 6907 | 2204 | 31.909657% |
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 | 7822 | 6907 | 18 | 18 | 0.23% | 0.26% |  |
| B | 7822 | 6907 | 890 | 890 | 11.38% | 12.89% |  |
| C | 7822 | 6907 | 39 | 39 | 0.50% | 0.56% |  |
| D | 7821 | 6906 | 2147 | 2147 | 27.45% | 31.09% |  |
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 | 185800 | 975.42 | 776 | 756 | 189.7 |
| A | 3 | 245 | 34205 | 176.32 | 776 | 756 | 189.7 |
| A | 11 | 3 | 12968 | 64.37 | 776 | 756 | 189.7 |
| B | 10 | 128 | 3800192 | 24862.54 | 716 | 689 | 152.8 |
| B | 5 | 172 | 1351886 | 8841.73 | 716 | 689 | 152.8 |
| B | 5 | 185 | 209730 | 1367.89 | 716 | 689 | 152.8 |
| C | 12 | 252 | 467955 | 2285.24 | 753 | 746 | 204.4 |
| C | 6 | 223 | 90187 | 437.48 | 753 | 746 | 204.4 |
| C | 15 | 208 | 84610 | 410.2 | 753 | 746 | 204.4 |
| D | 12 | 110 | 5146911 | 26926.49 | 674 | 645 | 191.1 |
| D | 3 | 224 | 798086 | 4172.4 | 674 | 645 | 191.1 |
| D | 7 | 222 | 408995 | 2136.58 | 674 | 645 | 191.1 |
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 |  |