Observation information
- date-obs: 2026-03-25
- time-obs: 05:42:31.859300000
- date-end: 2026-03-25
- time-end: 07:48:28.838700000
- obs_id: A14_083T05_9000006560
- exposure: 6225.4762255
- 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_56749cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56749cztM0_level2_quad_clean.evt
|
| Size (bytes) | 435,208,320 | 99,293,760 |
| Size | 415.0 MB
| 94.7 MB
|
| Events in quadrant A | 3,521,288 | 654,265 |
| Events in quadrant B | 4,932,038 | 663,531 |
| Events in quadrant C | 3,753,522 | 616,292 |
| Events in quadrant D | 3,378,206 | 602,091 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15048 | 1 |
| B | 0 | 19325 | 1 |
| C | 0 | 16208 | 1 |
| D | 0 | 14543 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6747 | 143 | 2.119461% |
| B | 6748 | 563 | 8.343213% |
| C | 6748 | 221 | 3.275044% |
| D | 6748 | 61 | 0.903972% |
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 | 7557 | 6748 | 45 | 45 | 0.60% | 0.67% |  |
| B | 7558 | 6749 | 321 | 321 | 4.25% | 4.76% |  |
| C | 7558 | 6749 | 94 | 94 | 1.24% | 1.39% |  |
| D | 7558 | 6749 | 15 | 15 | 0.20% | 0.22% |  |
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 | 321941 | 1764.2 | 738 | 719 | 182.1 |
| A | 3 | 14 | 262794 | 1439.36 | 738 | 719 | 182.1 |
| A | 3 | 62 | 53600 | 290.43 | 738 | 719 | 182.1 |
| B | 4 | 206 | 856739 | 5551.31 | 712 | 685 | 154.2 |
| B | 8 | 128 | 848333 | 5496.8 | 712 | 685 | 154.2 |
| B | 5 | 185 | 220585 | 1426.0 | 712 | 685 | 154.2 |
| C | 15 | 215 | 246627 | 1250.78 | 716 | 709 | 196.6 |
| C | 13 | 3 | 177336 | 898.36 | 716 | 709 | 196.6 |
| C | 15 | 230 | 165760 | 839.48 | 716 | 709 | 196.6 |
| D | 5 | 113 | 139728 | 671.6 | 725 | 694 | 207.0 |
| D | 2 | 249 | 125836 | 604.49 | 725 | 694 | 207.0 |
| D | 5 | 173 | 52659 | 251.01 | 725 | 694 | 207.0 |
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 |  |