Observation information
- date-obs: 2026-06-25
- time-obs: 02:56:15.864400000
- date-end: 2026-06-25
- time-end: 05:25:40.841000000
- obs_id: A14_042T02_9000006586
- exposure: 6214.55747128
- 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_58115cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58115cztM0_level2_quad_clean.evt
|
| Size (bytes) | 571,262,400 | 105,120,000 |
| Size | 544.8 MB
| 100.3 MB
|
| Events in quadrant A | 3,544,393 | 713,294 |
| Events in quadrant B | 5,855,448 | 737,094 |
| Events in quadrant C | 3,313,793 | 680,220 |
| Events in quadrant D | 7,850,397 | 530,350 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15718 | 2 |
| B | 0 | 22531 | 2 |
| C | 0 | 15462 | 2 |
| D | 0 | 28459 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7500 | 111 | 1.480000% |
| B | 7500 | 471 | 6.280000% |
| C | 7500 | 70 | 0.933333% |
| D | 7501 | 1372 | 18.290895% |
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 | 8965 | 7502 | 25 | 25 | 0.28% | 0.33% |  |
| B | 8965 | 7502 | 253 | 253 | 2.82% | 3.37% |  |
| C | 8965 | 7502 | 5 | 5 | 0.06% | 0.07% |  |
| D | 8966 | 7503 | 1238 | 1238 | 13.81% | 16.50% |  |
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 | 127075 | 617.62 | 837 | 814 | 204.4 |
| A | 3 | 245 | 104609 | 507.72 | 837 | 814 | 204.4 |
| A | 12 | 3 | 26013 | 123.26 | 837 | 814 | 204.4 |
| B | 10 | 128 | 2340499 | 13374.41 | 814 | 783 | 174.9 |
| B | 4 | 201 | 79715 | 451.2 | 814 | 783 | 174.9 |
| B | 0 | 63 | 63707 | 359.69 | 814 | 783 | 174.9 |
| C | 1 | 16 | 35084 | 152.52 | 816 | 807 | 224.7 |
| C | 13 | 3 | 22675 | 97.31 | 816 | 807 | 224.7 |
| C | 9 | 38 | 20078 | 85.75 | 816 | 807 | 224.7 |
| D | 12 | 110 | 3466863 | 16247.69 | 757 | 724 | 213.3 |
| D | 2 | 249 | 700134 | 3278.52 | 757 | 724 | 213.3 |
| D | 8 | 160 | 416582 | 1949.35 | 757 | 724 | 213.3 |
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 |  |