Observation information
- date-obs: 2026-03-23
- time-obs: 12:15:22.233500000
- date-end: 2026-03-23
- time-end: 14:13:22.212200000
- obs_id: A14_083T05_9000006560
- exposure: 5044.90791339
- sourceid: NGC1556
- observer: Rakshit
- ra_pnt: 64.43679
- dec_pnt: -50.16444
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T05_9000006560_56724cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56724cztM0_level2_quad_clean.evt
|
| Size (bytes) | 442,572,480 | 86,238,720 |
| Size | 422.1 MB
| 82.2 MB
|
| Events in quadrant A | 3,942,731 | 574,952 |
| Events in quadrant B | 2,795,659 | 626,112 |
| Events in quadrant C | 5,726,291 | 473,387 |
| Events in quadrant D | 3,453,542 | 519,558 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15705 | 1 |
| B | 0 | 12640 | 1 |
| C | 0 | 21252 | 2 |
| D | 0 | 14431 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5970 | 176 | 2.948074% |
| B | 5970 | 88 | 1.474037% |
| C | 5969 | 1014 | 16.987770% |
| D | 5970 | 161 | 2.696817% |
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 | 7080 | 5970 | 90 | 90 | 1.27% | 1.51% |  |
| B | 7080 | 5970 | 13 | 13 | 0.18% | 0.22% |  |
| C | 7079 | 5970 | 986 | 986 | 13.93% | 16.52% |  |
| D | 7080 | 5970 | 143 | 143 | 2.02% | 2.40% |  |
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 | 825745 | 5175.95 | 645 | 632 | 159.4 |
| A | 10 | 251 | 525325 | 3291.41 | 645 | 632 | 159.4 |
| A | 4 | 95 | 40239 | 248.45 | 645 | 632 | 159.4 |
| B | 0 | 63 | 78771 | 564.14 | 640 | 619 | 138.5 |
| B | 10 | 247 | 76233 | 545.82 | 640 | 619 | 138.5 |
| B | 0 | 245 | 30326 | 214.44 | 640 | 619 | 138.5 |
| C | 15 | 230 | 2989903 | 18743.04 | 578 | 573 | 159.5 |
| C | 13 | 3 | 170968 | 1068.37 | 578 | 573 | 159.5 |
| C | 12 | 252 | 117991 | 736.21 | 578 | 573 | 159.5 |
| D | 2 | 249 | 560447 | 3209.76 | 618 | 592 | 174.4 |
| D | 2 | 207 | 150687 | 860.52 | 618 | 592 | 174.4 |
| D | 3 | 12 | 75629 | 430.2 | 618 | 592 | 174.4 |
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 |  |