Observation information
- date-obs: 2026-07-14
- time-obs: 03:20:21.891000000
- date-end: 2026-07-14
- time-end: 05:20:19.875700000
- obs_id: A14_045T01_9000006590
- exposure: 5215.79809487
- 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_58398cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58398cztM0_level2_quad_clean.evt
|
| Size (bytes) | 591,526,080 | 87,454,080 |
| Size | 564.1 MB
| 83.4 MB
|
| Events in quadrant A | 5,157,691 | 543,580 |
| Events in quadrant B | 3,547,689 | 645,736 |
| Events in quadrant C | 6,595,328 | 498,039 |
| Events in quadrant D | 6,115,925 | 528,267 |
Level1 data integrity
| 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 | 19522 | 1 |
| B | 0 | 14632 | 1 |
| C | 0 | 23868 | 1 |
| D | 0 | 22280 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6193 | 785 | 12.675601% |
| B | 6193 | 216 | 3.487809% |
| C | 6194 | 1063 | 17.161769% |
| D | 6193 | 265 | 4.279025% |
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 | 7198 | 6194 | 578 | 578 | 8.03% | 9.33% |  |
| B | 7198 | 6194 | 91 | 91 | 1.26% | 1.47% |  |
| C | 7199 | 6195 | 820 | 820 | 11.39% | 13.24% |  |
| D | 7198 | 6194 | 128 | 128 | 1.78% | 2.07% |  |
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 | 114 | 1884975 | 11051.34 | 690 | 670 | 170.5 |
| A | 3 | 244 | 181850 | 1062.61 | 690 | 670 | 170.5 |
| A | 2 | 143 | 137863 | 804.63 | 690 | 670 | 170.5 |
| B | 0 | 197 | 308479 | 2054.94 | 701 | 677 | 149.8 |
| B | 4 | 201 | 151759 | 1008.65 | 701 | 677 | 149.8 |
| B | 0 | 153 | 55357 | 365.05 | 701 | 677 | 149.8 |
| C | 5 | 10 | 1613183 | 9265.63 | 633 | 625 | 174.0 |
| C | 9 | 38 | 1428952 | 8207.05 | 633 | 625 | 174.0 |
| C | 6 | 223 | 889408 | 5106.88 | 633 | 625 | 174.0 |
| D | 5 | 113 | 2709930 | 14164.98 | 672 | 644 | 191.3 |
| D | 8 | 240 | 455509 | 2378.17 | 672 | 644 | 191.3 |
| D | 11 | 129 | 136847 | 712.11 | 672 | 644 | 191.3 |
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 |  |