Observation information
- date-obs: 2026-06-30
- time-obs: 16:36:38.506100000
- date-end: 2026-06-30
- time-end: 18:54:28.484100000
- obs_id: A14_042T02_9000006586
- exposure: 5101.02530295
- 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_58198cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58198cztM0_level2_quad_clean.evt
|
| Size (bytes) | 534,415,680 | 86,575,680 |
| Size | 509.7 MB
| 82.6 MB
|
| Events in quadrant A | 6,099,570 | 502,986 |
| Events in quadrant B | 6,155,896 | 538,709 |
| Events in quadrant C | 3,034,495 | 593,078 |
| Events in quadrant D | 3,989,120 | 532,627 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 18 |
| B | 0 | 158 | 20 |
| C | 0 | 158 | 18 |
| D | 0 | 158 | 12 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24828 | 2102 |
| B | 0 | 27829 | 5262 |
| C | 0 | 15929 | 2044 |
| D | 0 | 19786 | 3593 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6579 | 1256 | 19.091047% |
| B | 6287 | 1021 | 16.239860% |
| C | 6591 | 4 | 0.060689% |
| D | 6403 | 49 | 0.765266% |
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 | 8233 | 7082 | 1146 | 1146 | 13.92% | 16.18% |  |
| B | 8203 | 6782 | 745 | 745 | 9.08% | 10.98% |  |
| C | 8244 | 7044 | 3 | 3 | 0.04% | 0.04% |  |
| D | 8234 | 6902 | 50 | 50 | 0.61% | 0.72% |  |
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 | 7 | 64 | 3430910 | 20412.53 | 673 | 655 | 168.0 |
| A | 4 | 3 | 25651 | 148.74 | 673 | 655 | 168.0 |
| A | 8 | 246 | 22584 | 130.49 | 673 | 655 | 168.0 |
| B | 2 | 249 | 1985136 | 14154.81 | 651 | 627 | 140.2 |
| B | 10 | 128 | 1378275 | 9826.29 | 651 | 627 | 140.2 |
| B | 5 | 185 | 44286 | 311.4 | 651 | 627 | 140.2 |
| C | 12 | 252 | 74441 | 376.63 | 717 | 709 | 195.8 |
| C | 9 | 237 | 52131 | 262.66 | 717 | 709 | 195.8 |
| C | 6 | 223 | 35290 | 176.64 | 717 | 709 | 195.8 |
| D | 8 | 160 | 334272 | 1707.76 | 694 | 665 | 195.3 |
| D | 3 | 224 | 211455 | 1079.05 | 694 | 665 | 195.3 |
| D | 8 | 240 | 165727 | 844.96 | 694 | 665 | 195.3 |
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 |  |