Observation information
- date-obs: 2026-07-13
- time-obs: 20:08:52.961800000
- date-end: 2026-07-13
- time-end: 22:24:44.921300000
- obs_id: A14_045T01_9000006590
- exposure: 5594.81096065
- 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_58394cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58394cztM0_level2_quad_clean.evt
|
| Size (bytes) | 594,293,760 | 92,687,040 |
| Size | 566.8 MB
| 88.4 MB
|
| Events in quadrant A | 3,978,057 | 614,939 |
| Events in quadrant B | 5,850,546 | 610,013 |
| Events in quadrant C | 3,866,915 | 586,349 |
| Events in quadrant D | 7,807,958 | 548,499 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16317 | 2 |
| B | 0 | 21758 | 5 |
| C | 0 | 16069 | 2 |
| D | 0 | 27866 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6401 | 208 | 3.249492% |
| B | 6400 | 871 | 13.609375% |
| C | 6400 | 260 | 4.062500% |
| D | 6400 | 346 | 5.406250% |
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 | 7526 | 6402 | 165 | 165 | 2.19% | 2.58% |  |
| B | 7525 | 6401 | 669 | 669 | 8.89% | 10.45% |  |
| C | 7525 | 6401 | 248 | 248 | 3.30% | 3.87% |  |
| D | 7525 | 6401 | 514 | 514 | 6.83% | 8.03% |  |
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 | 7 | 64 | 471817 | 2718.44 | 702 | 685 | 173.3 |
| A | 4 | 249 | 305009 | 1755.95 | 702 | 685 | 173.3 |
| A | 2 | 143 | 188177 | 1081.83 | 702 | 685 | 173.3 |
| B | 5 | 172 | 2399752 | 16787.53 | 673 | 648 | 142.9 |
| B | 4 | 201 | 380132 | 2655.41 | 673 | 648 | 142.9 |
| B | 6 | 255 | 86608 | 601.5 | 673 | 648 | 142.9 |
| C | 9 | 38 | 462067 | 2471.69 | 677 | 672 | 186.7 |
| C | 4 | 5 | 350527 | 1874.17 | 677 | 672 | 186.7 |
| C | 6 | 223 | 185493 | 990.08 | 677 | 672 | 186.7 |
| D | 5 | 113 | 4418258 | 23026.9 | 669 | 640 | 191.8 |
| D | 11 | 129 | 274463 | 1427.31 | 669 | 640 | 191.8 |
| D | 2 | 249 | 239867 | 1246.97 | 669 | 640 | 191.8 |
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 |  |