Observation information
- date-obs: 2026-06-27
- time-obs: 08:53:56.316400000
- date-end: 2026-06-27
- time-end: 11:06:14.293500000
- obs_id: A14_042T02_9000006586
- exposure: 1886.69720584
- 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_58149cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58149cztM0_level2_quad_clean.evt
|
| Size (bytes) | 787,944,960 | 79,038,720 |
| Size | 751.4 MB
| 75.4 MB
|
| Events in quadrant A | 3,005,664 | 677,446 |
| Events in quadrant B | 13,766,950 | 221,526 |
| Events in quadrant C | 3,179,728 | 638,533 |
| Events in quadrant D | 8,714,650 | 406,138 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 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 | 13263 | 2 |
| B | 0 | 45421 | 2 |
| C | 0 | 13805 | 2 |
| D | 0 | 30185 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6440 | 101 | 1.568323% |
| B | 6440 | 4782 | 74.254658% |
| C | 6440 | 98 | 1.521739% |
| D | 6440 | 2301 | 35.729814% |
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 | 7600 | 6440 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7599 | 6439 | 4248 | 4248 | 55.90% | 65.97% |  |
| C | 7600 | 6440 | 9 | 9 | 0.12% | 0.14% |  |
| D | 7600 | 6440 | 2064 | 2064 | 27.16% | 32.05% |  |
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 | 11 | 3 | 19230 | 97.72 | 769 | 749 | 189.1 |
| A | 2 | 143 | 9864 | 48.2 | 769 | 749 | 189.1 |
| A | 3 | 137 | 9162 | 44.49 | 769 | 749 | 189.1 |
| B | 10 | 128 | 11711701 | 122173.24 | 442 | 426 | 95.9 |
| B | 0 | 79 | 62661 | 649.24 | 442 | 426 | 95.9 |
| B | 5 | 185 | 48434 | 500.82 | 442 | 426 | 95.9 |
| C | 12 | 252 | 166736 | 824.91 | 739 | 733 | 201.2 |
| C | 6 | 223 | 46209 | 225.98 | 739 | 733 | 201.2 |
| C | 9 | 38 | 33802 | 164.33 | 739 | 733 | 201.2 |
| D | 12 | 110 | 5707722 | 31986.91 | 633 | 605 | 178.4 |
| D | 2 | 249 | 90375 | 503.14 | 633 | 605 | 178.4 |
| D | 8 | 240 | 83972 | 467.25 | 633 | 605 | 178.4 |
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 |  |