Observation information
- date-obs: 2026-06-25
- time-obs: 08:35:53.806600000
- date-end: 2026-06-25
- time-end: 10:34:08.786800000
- obs_id: A14_042T02_9000006586
- exposure: 2371.38074547
- 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_58119cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58119cztM0_level2_quad_clean.evt
|
| Size (bytes) | 586,437,120 | 80,991,360 |
| Size | 559.3 MB
| 77.2 MB
|
| Events in quadrant A | 2,822,060 | 612,628 |
| Events in quadrant B | 4,286,051 | 624,958 |
| Events in quadrant C | 2,922,769 | 575,850 |
| Events in quadrant D | 11,213,651 | 222,793 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12421 | 1 |
| B | 0 | 16531 | 1 |
| C | 0 | 12727 | 1 |
| D | 0 | 37276 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5955 | 78 | 1.309824% |
| B | 5955 | 442 | 7.422334% |
| C | 5955 | 106 | 1.780017% |
| D | 5956 | 3801 | 63.817999% |
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 | 7095 | 5956 | 7 | 7 | 0.10% | 0.12% |  |
| B | 7095 | 5956 | 338 | 338 | 4.76% | 5.67% |  |
| C | 7095 | 5956 | 53 | 53 | 0.75% | 0.89% |  |
| D | 7096 | 5957 | 3425 | 3425 | 48.27% | 57.50% |  |
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 | 10 | 251 | 70294 | 408.34 | 694 | 675 | 170.5 |
| A | 11 | 3 | 37120 | 213.77 | 694 | 675 | 170.5 |
| A | 3 | 245 | 16985 | 95.67 | 694 | 675 | 170.5 |
| B | 10 | 128 | 1394872 | 9741.02 | 665 | 641 | 143.1 |
| B | 0 | 153 | 34258 | 234.87 | 665 | 641 | 143.1 |
| B | 5 | 185 | 30156 | 206.21 | 665 | 641 | 143.1 |
| C | 12 | 2 | 180202 | 991.58 | 663 | 656 | 181.1 |
| C | 1 | 16 | 80119 | 438.85 | 663 | 656 | 181.1 |
| C | 11 | 244 | 27581 | 148.7 | 663 | 656 | 181.1 |
| D | 12 | 110 | 8876989 | 62149.79 | 500 | 479 | 142.8 |
| D | 7 | 222 | 152350 | 1063.34 | 500 | 479 | 142.8 |
| D | 2 | 249 | 46368 | 321.3 | 500 | 479 | 142.8 |
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 |  |