Observation information
- date-obs: 2026-07-12
- time-obs: 07:50:33.227800000
- date-end: 2026-07-12
- time-end: 10:01:08.212600000
- obs_id: A14_045T01_9000006590
- exposure: 6592.97418344
- 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_58371cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58371cztM0_level2_quad_clean.evt
|
| Size (bytes) | 583,663,680 | 111,507,840 |
| Size | 556.6 MB
| 106.3 MB
|
| Events in quadrant A | 4,937,918 | 739,018 |
| Events in quadrant B | 7,783,054 | 692,355 |
| Events in quadrant C | 3,943,832 | 721,893 |
| Events in quadrant D | 4,332,417 | 678,031 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20113 | 0 |
| B | 0 | 28422 | 8 |
| C | 0 | 17275 | 1 |
| D | 0 | 18049 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7835 | 280 | 3.573708% |
| B | 7835 | 1412 | 18.021698% |
| C | 7835 | 47 | 0.599872% |
| D | 7835 | 42 | 0.536056% |
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 | 7835 | 7835 | 191 | 191 | 2.44% | 2.44% |  |
| B | 7834 | 7834 | 1020 | 1020 | 13.02% | 13.02% |  |
| C | 7835 | 7835 | 31 | 31 | 0.40% | 0.40% |  |
| D | 7835 | 7835 | 30 | 30 | 0.38% | 0.38% |  |
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 | 8 | 246 | 556218 | 2543.3 | 884 | 860 | 218.4 |
| A | 12 | 80 | 486081 | 2222.1 | 884 | 860 | 218.4 |
| A | 4 | 249 | 268048 | 1223.6 | 884 | 860 | 218.4 |
| B | 5 | 172 | 2635505 | 14825.4 | 829 | 800 | 177.7 |
| B | 2 | 249 | 670840 | 3770.29 | 829 | 800 | 177.7 |
| B | 6 | 255 | 353286 | 1983.43 | 829 | 800 | 177.7 |
| C | 14 | 245 | 186859 | 796.17 | 861 | 856 | 233.6 |
| C | 4 | 5 | 120055 | 510.22 | 861 | 856 | 233.6 |
| C | 1 | 16 | 52052 | 219.14 | 861 | 856 | 233.6 |
| D | 9 | 49 | 295352 | 1212.63 | 863 | 826 | 242.9 |
| D | 8 | 160 | 196184 | 804.34 | 863 | 826 | 242.9 |
| D | 11 | 129 | 153716 | 629.48 | 863 | 826 | 242.9 |
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 |  |