Observation information
- date-obs: 2026-06-24
- time-obs: 20:20:24.933400000
- date-end: 2026-06-24
- time-end: 22:27:57.901500000
- obs_id: A14_042T02_9000006586
- exposure: 6596.48027802
- 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_58111cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58111cztM0_level2_quad_clean.evt
|
| Size (bytes) | 676,013,760 | 106,395,840 |
| Size | 644.7 MB
| 101.5 MB
|
| Events in quadrant A | 3,445,258 | 730,786 |
| Events in quadrant B | 6,724,274 | 706,630 |
| Events in quadrant C | 3,617,455 | 689,217 |
| Events in quadrant D | 10,644,002 | 562,022 |
Level1 data integrity
| 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 | 15917 | 0 |
| B | 0 | 25208 | 0 |
| C | 0 | 16400 | 0 |
| D | 0 | 36868 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7653 | 22 | 0.287469% |
| B | 7654 | 860 | 11.235955% |
| C | 7654 | 44 | 0.574863% |
| D | 7653 | 1393 | 18.202012% |
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 | 7653 | 7653 | 19 | 19 | 0.25% | 0.25% |  |
| B | 7654 | 7654 | 665 | 665 | 8.69% | 8.69% |  |
| C | 7654 | 7654 | 37 | 37 | 0.48% | 0.48% |  |
| D | 7653 | 7653 | 1743 | 1743 | 22.78% | 22.78% |  |
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 | 58789 | 281.57 | 829 | 809 | 205.9 |
| A | 3 | 61 | 54478 | 260.63 | 829 | 809 | 205.9 |
| A | 10 | 251 | 54259 | 259.57 | 829 | 809 | 205.9 |
| B | 10 | 128 | 2668616 | 15645.59 | 788 | 759 | 170.5 |
| B | 5 | 172 | 598523 | 3505.57 | 788 | 759 | 170.5 |
| B | 5 | 185 | 54318 | 314.1 | 788 | 759 | 170.5 |
| C | 12 | 252 | 281390 | 1281.05 | 799 | 791 | 219.0 |
| C | 12 | 112 | 49119 | 220.64 | 799 | 791 | 219.0 |
| C | 1 | 237 | 38665 | 172.91 | 799 | 791 | 219.0 |
| D | 12 | 110 | 7203675 | 33189.25 | 767 | 733 | 217.0 |
| D | 0 | 160 | 118338 | 541.89 | 767 | 733 | 217.0 |
| D | 8 | 160 | 65614 | 298.95 | 767 | 733 | 217.0 |
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 |  |