Observation information
- date-obs: 2026-07-15
- time-obs: 06:56:09.673600000
- date-end: 2026-07-15
- time-end: 09:06:46.657700000
- obs_id: A14_045T01_9000006590
- exposure: 7501.49675459
- 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_58415cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58415cztM0_level2_quad_clean.evt
|
| Size (bytes) | 510,851,520 | 113,817,600 |
| Size | 487.2 MB
| 108.5 MB
|
| Events in quadrant A | 4,015,229 | 748,649 |
| Events in quadrant B | 4,328,655 | 790,573 |
| Events in quadrant C | 5,787,087 | 696,178 |
| Events in quadrant D | 4,170,980 | 666,403 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 156 | 0 |
| B | 0 | 156 | 0 |
| C | 0 | 156 | 0 |
| D | 0 | 156 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17474 | 4 |
| B | 0 | 18250 | 9 |
| C | 0 | 22590 | 15 |
| D | 0 | 17692 | 21 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7835 | 31 | 0.395660% |
| B | 7833 | 231 | 2.949062% |
| C | 7831 | 335 | 4.277870% |
| D | 7828 | 84 | 1.073071% |
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 | 7837 | 7837 | 6 | 6 | 0.08% | 0.08% |  |
| B | 7837 | 7837 | 152 | 152 | 1.94% | 1.94% |  |
| C | 7838 | 7838 | 289 | 289 | 3.69% | 3.69% |  |
| D | 7837 | 7837 | 67 | 67 | 0.85% | 0.85% |  |
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 | 347441 | 1595.07 | 876 | 854 | 217.3 |
| A | 3 | 14 | 86679 | 394.99 | 876 | 854 | 217.3 |
| A | 2 | 143 | 62989 | 285.96 | 876 | 854 | 217.3 |
| B | 5 | 172 | 227259 | 1238.94 | 850 | 819 | 182.8 |
| B | 2 | 249 | 198192 | 1079.9 | 850 | 819 | 182.8 |
| B | 6 | 255 | 104287 | 566.11 | 850 | 819 | 182.8 |
| C | 9 | 38 | 1070320 | 4694.31 | 831 | 824 | 227.8 |
| C | 5 | 10 | 900691 | 3949.77 | 831 | 824 | 227.8 |
| C | 9 | 237 | 173085 | 756.1 | 831 | 824 | 227.8 |
| D | 8 | 240 | 461609 | 1948.27 | 840 | 800 | 236.5 |
| D | 11 | 129 | 141334 | 594.17 | 840 | 800 | 236.5 |
| D | 5 | 173 | 61183 | 255.3 | 840 | 800 | 236.5 |
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 |  |