Observation information
- date-obs: 2026-07-17
- time-obs: 05:40:32.302600000
- date-end: 2026-07-17
- time-end: 07:55:16.285500000
- obs_id: A14_045T01_9000006590
- exposure: 7582.4727149
- 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_58444cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58444cztM0_level2_quad_clean.evt
|
| Size (bytes) | 462,378,240 | 114,575,040 |
| Size | 441.0 MB
| 109.3 MB
|
| Events in quadrant A | 3,862,600 | 743,480 |
| Events in quadrant B | 4,265,985 | 795,328 |
| Events in quadrant C | 4,419,214 | 703,792 |
| Events in quadrant D | 3,949,425 | 674,162 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17189 | 1 |
| B | 0 | 18238 | 1 |
| C | 0 | 18965 | 1 |
| D | 0 | 17421 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7949 | 185 | 2.327337% |
| B | 7949 | 319 | 4.013083% |
| C | 7949 | 331 | 4.164046% |
| D | 7949 | 92 | 1.157378% |
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 | 8034 | 7949 | 34 | 34 | 0.42% | 0.43% |  |
| B | 8034 | 7949 | 141 | 141 | 1.76% | 1.77% |  |
| C | 8034 | 7949 | 199 | 199 | 2.48% | 2.50% |  |
| D | 8034 | 7949 | 17 | 17 | 0.21% | 0.21% |  |
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 | 10 | 248 | 156409 | 705.43 | 895 | 871 | 220.5 |
| A | 4 | 249 | 79506 | 356.64 | 895 | 871 | 220.5 |
| A | 12 | 80 | 50666 | 225.84 | 895 | 871 | 220.5 |
| B | 4 | 201 | 458235 | 2433.02 | 876 | 841 | 188.0 |
| B | 5 | 172 | 134367 | 710.27 | 876 | 841 | 188.0 |
| B | 7 | 252 | 36671 | 190.59 | 876 | 841 | 188.0 |
| C | 5 | 10 | 493844 | 2114.67 | 853 | 842 | 233.1 |
| C | 14 | 245 | 260752 | 1114.85 | 853 | 842 | 233.1 |
| C | 1 | 12 | 186579 | 796.69 | 853 | 842 | 233.1 |
| D | 2 | 249 | 161839 | 667.81 | 864 | 828 | 241.1 |
| D | 11 | 129 | 117614 | 484.38 | 864 | 828 | 241.1 |
| D | 2 | 120 | 76308 | 313.06 | 864 | 828 | 241.1 |
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 |  |