Observation information
- date-obs: 2026-06-23
- time-obs: 06:07:17.314400000
- date-end: 2026-06-23
- time-end: 08:18:29.291800000
- obs_id: A14_042T02_9000006586
- exposure: 4709.11593336
- 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_58088cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58088cztM0_level2_quad_clean.evt
|
| Size (bytes) | 596,977,920 | 93,798,720 |
| Size | 569.3 MB
| 89.5 MB
|
| Events in quadrant A | 3,172,798 | 661,546 |
| Events in quadrant B | 9,987,018 | 503,198 |
| Events in quadrant C | 3,473,396 | 623,523 |
| Events in quadrant D | 4,938,629 | 579,622 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14137 | 2 |
| B | 0 | 34427 | 2 |
| C | 0 | 15030 | 3 |
| D | 0 | 19232 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6779 | 118 | 1.740670% |
| B | 6779 | 2421 | 35.713232% |
| C | 6778 | 174 | 2.567129% |
| D | 6778 | 262 | 3.865447% |
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 | 7739 | 6779 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7739 | 6779 | 1687 | 1687 | 21.80% | 24.89% |  |
| C | 7738 | 6778 | 53 | 53 | 0.68% | 0.78% |  |
| D | 7738 | 6778 | 131 | 131 | 1.69% | 1.93% |  |
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 | 0 | 6 | 47953 | 245.41 | 777 | 757 | 192.3 |
| A | 10 | 251 | 47355 | 242.3 | 777 | 757 | 192.3 |
| A | 3 | 245 | 26919 | 136.04 | 777 | 757 | 192.3 |
| B | 10 | 128 | 6408843 | 43793.6 | 681 | 655 | 146.3 |
| B | 5 | 172 | 494748 | 3376.63 | 681 | 655 | 146.3 |
| B | 0 | 63 | 104332 | 708.53 | 681 | 655 | 146.3 |
| C | 6 | 223 | 204637 | 1009.85 | 747 | 742 | 201.9 |
| C | 12 | 252 | 156639 | 772.12 | 747 | 742 | 201.9 |
| C | 15 | 201 | 94519 | 464.46 | 747 | 742 | 201.9 |
| D | 12 | 110 | 950784 | 4548.98 | 739 | 708 | 208.9 |
| D | 12 | 1 | 534235 | 2554.53 | 739 | 708 | 208.9 |
| D | 8 | 160 | 252951 | 1207.74 | 739 | 708 | 208.9 |
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 |  |