Observation information
- date-obs: 2026-02-14
- time-obs: 10:42:04.698700000
- date-end: 2026-02-14
- time-end: 12:38:18.682900000
- obs_id: A14_083T04_9000006550
- exposure: 4771.12847787
- sourceid: NGC1522
- observer: Rakshit
- ra_pnt: 61.533
- dec_pnt: -52.66842
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T04_9000006550_56173cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56173cztM0_level2_quad_clean.evt
|
| Size (bytes) | 460,546,560 | 83,822,400 |
| Size | 439.2 MB
| 79.9 MB
|
| Events in quadrant A | 6,212,860 | 482,031 |
| Events in quadrant B | 3,453,538 | 604,138 |
| Events in quadrant C | 3,492,512 | 535,158 |
| Events in quadrant D | 3,436,754 | 510,381 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 118 | 0 |
| B | 0 | 118 | 0 |
| C | 0 | 118 | 0 |
| D | 0 | 118 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22543 | 2 |
| B | 0 | 14379 | 0 |
| C | 0 | 14707 | 0 |
| D | 0 | 14226 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5813 | 1213 | 20.867022% |
| B | 5814 | 287 | 4.936361% |
| C | 5814 | 303 | 5.211558% |
| D | 5814 | 160 | 2.751978% |
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 | 6973 | 5815 | 888 | 888 | 12.73% | 15.27% |  |
| B | 6974 | 5816 | 132 | 132 | 1.89% | 2.27% |  |
| C | 6974 | 5816 | 196 | 196 | 2.81% | 3.37% |  |
| D | 6974 | 5816 | 94 | 94 | 1.35% | 1.62% |  |
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 | 15 | 32 | 1670580 | 11605.7 | 584 | 570 | 143.9 |
| A | 12 | 115 | 1089795 | 7569.54 | 584 | 570 | 143.9 |
| A | 9 | 250 | 756185 | 5251.13 | 584 | 570 | 143.9 |
| B | 5 | 185 | 561219 | 4292.94 | 618 | 598 | 130.6 |
| B | 5 | 172 | 138990 | 1059.73 | 618 | 598 | 130.6 |
| B | 10 | 247 | 74961 | 569.43 | 618 | 598 | 130.6 |
| C | 12 | 254 | 1009343 | 6208.63 | 597 | 592 | 162.5 |
| C | 15 | 230 | 43895 | 266.52 | 597 | 592 | 162.5 |
| C | 12 | 252 | 43252 | 262.56 | 597 | 592 | 162.5 |
| D | 8 | 240 | 243559 | 1429.07 | 605 | 577 | 170.0 |
| D | 11 | 129 | 205399 | 1204.64 | 605 | 577 | 170.0 |
| D | 2 | 249 | 183796 | 1077.58 | 605 | 577 | 170.0 |
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 |  |