Observation information
- date-obs: 2026-03-24
- time-obs: 02:34:33.105300000
- date-end: 2026-03-24
- time-end: 07:32:49.057800000
- obs_id: A14_083T05_9000006560
- exposure: 12844.0674974
- 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_56734cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56734cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,244,234,880 | 218,862,720 |
| Size | 1.2 GB
| 208.7 MB
|
| Events in quadrant A | 11,772,530 | 1,394,775 |
| Events in quadrant B | 8,908,872 | 1,589,327 |
| Events in quadrant C | 15,795,681 | 1,155,874 |
| Events in quadrant D | 8,317,049 | 1,361,267 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 334 | 0 |
| B | 0 | 334 | 0 |
| C | 0 | 334 | 0 |
| D | 0 | 334 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 46463 | 3 |
| B | 0 | 38037 | 3 |
| C | 0 | 58483 | 3 |
| D | 0 | 36073 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 16306 | 1544 | 9.468907% |
| B | 16306 | 586 | 3.593769% |
| C | 16307 | 3507 | 21.506102% |
| D | 16307 | 270 | 1.655731% |
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 | 17896 | 16306 | 1314 | 1314 | 7.34% | 8.06% |  |
| B | 17896 | 16306 | 265 | 265 | 1.48% | 1.63% |  |
| C | 17897 | 16307 | 3015 | 3015 | 16.85% | 18.49% |  |
| D | 17897 | 16307 | 105 | 105 | 0.59% | 0.64% |  |
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 | 62 | 3319093 | 7860.63 | 1709 | 1666 | 422.0 |
| A | 10 | 251 | 878991 | 2078.82 | 1709 | 1666 | 422.0 |
| A | 4 | 249 | 477420 | 1127.3 | 1709 | 1666 | 422.0 |
| B | 5 | 185 | 910840 | 2431.35 | 1737 | 1673 | 373.9 |
| B | 8 | 128 | 720330 | 1921.88 | 1737 | 1673 | 373.9 |
| B | 10 | 16 | 153057 | 404.84 | 1737 | 1673 | 373.9 |
| C | 15 | 230 | 8669584 | 20852.72 | 1533 | 1522 | 415.7 |
| C | 6 | 223 | 151510 | 360.83 | 1533 | 1522 | 415.7 |
| C | 15 | 199 | 134948 | 320.98 | 1533 | 1522 | 415.7 |
| D | 2 | 249 | 786420 | 1619.32 | 1723 | 1647 | 484.6 |
| D | 2 | 31 | 159687 | 326.1 | 1723 | 1647 | 484.6 |
| D | 5 | 173 | 144980 | 295.76 | 1723 | 1647 | 484.6 |
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 |  |