Observation information
- date-obs: 2026-07-12
- time-obs: 06:07:55.239500000
- date-end: 2026-07-12
- time-end: 08:15:57.224800000
- obs_id: A14_045T01_9000006590
- exposure: 3693.93793702
- sourceid: NGC 4383
- observer: ujjwalkrishnan
- ra_pnt: 186.3563
- dec_pnt: 16.47013
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_045T01_9000006590_58370cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58370cztM0_level2_quad_clean.evt
|
| Size (bytes) | 610,473,600 | 93,208,320 |
| Size | 582.2 MB
| 88.9 MB
|
| Events in quadrant A | 4,400,902 | 666,128 |
| Events in quadrant B | 10,066,442 | 389,786 |
| Events in quadrant C | 3,674,631 | 657,532 |
| Events in quadrant D | 3,894,218 | 606,718 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18090 | 1 |
| B | 0 | 34764 | 1 |
| C | 0 | 16034 | 1 |
| D | 0 | 16489 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5 | 0 |
| B | 0 | 5 | 0 |
| C | 0 | 5 | 0 |
| D | 0 | 5 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7212 | 409 | 5.671104% |
| B | 7213 | 3580 | 49.632608% |
| C | 7213 | 186 | 2.578677% |
| D | 7212 | 287 | 3.979479% |
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 | 7682 | 7212 | 157 | 157 | 2.04% | 2.18% |  |
| B | 7683 | 7213 | 2732 | 2732 | 35.56% | 37.88% |  |
| C | 7683 | 7213 | 35 | 35 | 0.46% | 0.49% |  |
| D | 7682 | 7212 | 86 | 86 | 1.12% | 1.19% |  |
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 | 12 | 80 | 509546 | 2527.81 | 817 | 792 | 201.3 |
| A | 13 | 248 | 241849 | 1197.72 | 817 | 792 | 201.3 |
| A | 8 | 246 | 208629 | 1032.67 | 817 | 792 | 201.3 |
| B | 5 | 172 | 7021090 | 55733.98 | 581 | 558 | 126.0 |
| B | 2 | 249 | 184144 | 1457.44 | 581 | 558 | 126.0 |
| B | 10 | 128 | 111441 | 880.27 | 581 | 558 | 126.0 |
| C | 4 | 5 | 144526 | 656.33 | 801 | 793 | 219.0 |
| C | 14 | 245 | 128534 | 583.31 | 801 | 793 | 219.0 |
| C | 12 | 249 | 121795 | 552.53 | 801 | 793 | 219.0 |
| D | 11 | 129 | 159177 | 706.84 | 793 | 759 | 224.1 |
| D | 8 | 160 | 149653 | 664.34 | 793 | 759 | 224.1 |
| D | 3 | 12 | 142277 | 631.43 | 793 | 759 | 224.1 |
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 |  |