Observation information
- date-obs: 2026-03-24
- time-obs: 14:05:40.997100000
- date-end: 2026-03-24
- time-end: 16:10:16.979100000
- obs_id: A14_083T05_9000006560
- exposure: 5561.48292118
- 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_56740cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56740cztM0_level2_quad_clean.evt
|
| Size (bytes) | 439,859,520 | 92,646,720 |
| Size | 419.5 MB
| 88.4 MB
|
| Events in quadrant A | 3,051,153 | 619,401 |
| Events in quadrant B | 4,012,171 | 657,574 |
| Events in quadrant C | 5,791,012 | 523,271 |
| Events in quadrant D | 2,931,706 | 560,068 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13827 | 1 |
| B | 0 | 16319 | 1 |
| C | 0 | 21895 | 7 |
| D | 0 | 13331 | 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 | 6376 | 124 | 1.944793% |
| B | 6376 | 289 | 4.532622% |
| C | 6376 | 900 | 14.115433% |
| D | 6376 | 31 | 0.486198% |
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 | 7475 | 6376 | 53 | 53 | 0.71% | 0.83% |  |
| B | 7476 | 6377 | 156 | 156 | 2.09% | 2.45% |  |
| C | 7476 | 6377 | 853 | 853 | 11.41% | 13.38% |  |
| D | 7476 | 6377 | 4 | 4 | 0.05% | 0.06% |  |
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 | 251 | 163420 | 947.21 | 697 | 680 | 171.8 |
| A | 3 | 62 | 147464 | 854.34 | 697 | 680 | 171.8 |
| A | 8 | 249 | 13057 | 72.04 | 697 | 680 | 171.8 |
| B | 4 | 206 | 578409 | 3899.99 | 685 | 658 | 148.1 |
| B | 5 | 185 | 408925 | 2755.92 | 685 | 658 | 148.1 |
| B | 0 | 213 | 165785 | 1114.66 | 685 | 658 | 148.1 |
| C | 15 | 230 | 1171410 | 6733.76 | 627 | 618 | 173.9 |
| C | 6 | 223 | 1047599 | 6021.66 | 627 | 618 | 173.9 |
| C | 15 | 208 | 535711 | 3077.56 | 627 | 618 | 173.9 |
| D | 5 | 173 | 53224 | 278.56 | 669 | 637 | 188.8 |
| D | 2 | 236 | 50997 | 266.76 | 669 | 637 | 188.8 |
| D | 2 | 252 | 36094 | 187.82 | 669 | 637 | 188.8 |
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 |  |