Observation information
- date-obs: 2026-06-28
- time-obs: 12:54:12.343400000
- date-end: 2026-06-28
- time-end: 14:52:12.014800000
- obs_id: A14_042T02_9000006586
- exposure: 3229.91275078
- 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_58166cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58166cztM0_level2_quad_clean.evt
|
| Size (bytes) | 688,616,640 | 79,686,720 |
| Size | 656.7 MB
| 76.0 MB
|
| Events in quadrant A | 3,084,430 | 615,993 |
| Events in quadrant B | 10,943,032 | 348,669 |
| Events in quadrant C | 2,982,381 | 587,226 |
| Events in quadrant D | 7,993,376 | 423,163 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13614 | 1 |
| B | 0 | 36887 | 1 |
| C | 0 | 13510 | 1 |
| D | 0 | 28101 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6275 | 134 | 2.135458% |
| B | 6276 | 3284 | 52.326322% |
| C | 6275 | 76 | 1.211155% |
| D | 6275 | 1804 | 28.749004% |
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 | 7080 | 6275 | 10 | 10 | 0.14% | 0.16% |  |
| B | 7081 | 6276 | 2792 | 2792 | 39.43% | 44.49% |  |
| C | 7080 | 6275 | 12 | 12 | 0.17% | 0.19% |  |
| D | 7079 | 6274 | 1825 | 1825 | 25.78% | 29.09% |  |
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 | 3 | 14 | 136882 | 772.1 | 713 | 694 | 176.4 |
| A | 12 | 3 | 51311 | 286.97 | 713 | 694 | 176.4 |
| A | 3 | 245 | 41244 | 229.89 | 713 | 694 | 176.4 |
| B | 10 | 128 | 7156093 | 63251.38 | 522 | 502 | 113.1 |
| B | 2 | 249 | 912376 | 8060.45 | 522 | 502 | 113.1 |
| B | 5 | 185 | 128231 | 1129.05 | 522 | 502 | 113.1 |
| C | 12 | 252 | 81149 | 428.28 | 686 | 680 | 187.9 |
| C | 14 | 96 | 52798 | 277.39 | 686 | 680 | 187.9 |
| C | 14 | 254 | 44141 | 231.31 | 686 | 680 | 187.9 |
| D | 12 | 110 | 3054324 | 17250.76 | 618 | 591 | 177.0 |
| D | 8 | 160 | 1087443 | 6139.7 | 618 | 591 | 177.0 |
| D | 8 | 240 | 922343 | 5207.04 | 618 | 591 | 177.0 |
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 |  |