Observation information
- date-obs: 2026-07-17
- time-obs: 22:53:52.163100000
- date-end: 2026-07-18
- time-end: 01:19:00.131200000
- obs_id: A14_045T01_9000006590
- exposure: 6331.07217777
- 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_58455cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58455cztM0_level2_quad_clean.evt
|
| Size (bytes) | 414,734,400 | 101,640,960 |
| Size | 395.5 MB
| 96.9 MB
|
| Events in quadrant A | 3,578,310 | 671,367 |
| Events in quadrant B | 4,074,222 | 712,354 |
| Events in quadrant C | 3,123,403 | 648,003 |
| Events in quadrant D | 4,057,812 | 581,408 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15280 | 3 |
| B | 0 | 16503 | 3 |
| C | 0 | 14099 | 3 |
| D | 0 | 16784 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 21 | 0 |
| D | 0 | 21 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6663 | 122 | 1.831007% |
| B | 6663 | 289 | 4.337386% |
| C | 6663 | 62 | 0.930512% |
| D | 6662 | 314 | 4.713299% |
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 | 7863 | 6664 | 21 | 21 | 0.27% | 0.32% |  |
| B | 7863 | 6664 | 149 | 149 | 1.89% | 2.24% |  |
| C | 7863 | 6664 | 20 | 20 | 0.25% | 0.30% |  |
| D | 7862 | 6662 | 258 | 258 | 3.28% | 3.87% |  |
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 | 286420 | 1523.8 | 758 | 739 | 187.5 |
| A | 12 | 80 | 195400 | 1038.31 | 758 | 739 | 187.5 |
| A | 13 | 248 | 47580 | 249.85 | 758 | 739 | 187.5 |
| B | 4 | 201 | 444695 | 2766.42 | 753 | 727 | 160.5 |
| B | 5 | 172 | 324315 | 2016.31 | 753 | 727 | 160.5 |
| B | 8 | 128 | 74969 | 462.61 | 753 | 727 | 160.5 |
| C | 6 | 223 | 81584 | 396.17 | 740 | 735 | 204.1 |
| C | 14 | 254 | 31598 | 151.23 | 740 | 735 | 204.1 |
| C | 14 | 245 | 28436 | 135.74 | 740 | 735 | 204.1 |
| D | 6 | 239 | 589266 | 2888.86 | 708 | 676 | 203.7 |
| D | 8 | 240 | 497828 | 2440.08 | 708 | 676 | 203.7 |
| D | 5 | 173 | 48118 | 232.85 | 708 | 676 | 203.7 |
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 |  |