Observation information
- date-obs: 2026-03-25
- time-obs: 12:39:05.793100000
- date-end: 2026-03-25
- time-end: 14:45:25.772700000
- obs_id: A14_083T05_9000006560
- exposure: 6147.7990492
- 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_56754cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006560_56754cztM0_level2_quad_clean.evt
|
| Size (bytes) | 433,725,120 | 95,662,080 |
| Size | 413.6 MB
| 91.2 MB
|
| Events in quadrant A | 3,884,340 | 629,723 |
| Events in quadrant B | 4,815,230 | 668,245 |
| Events in quadrant C | 3,316,467 | 593,522 |
| Events in quadrant D | 3,539,087 | 556,192 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15720 | 1 |
| B | 0 | 18703 | 1 |
| C | 0 | 14585 | 1 |
| D | 0 | 15119 | 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 | 6430 | 156 | 2.426128% |
| B | 6430 | 340 | 5.287714% |
| C | 6431 | 159 | 2.472399% |
| D | 6431 | 210 | 3.265433% |
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 | 7580 | 6431 | 88 | 88 | 1.16% | 1.37% |  |
| B | 7580 | 6431 | 192 | 192 | 2.53% | 2.99% |  |
| C | 7581 | 6431 | 101 | 101 | 1.33% | 1.57% |  |
| D | 7581 | 6432 | 165 | 165 | 2.18% | 2.57% |  |
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 | 673717 | 3928.83 | 697 | 679 | 171.3 |
| A | 10 | 251 | 310565 | 1808.94 | 697 | 679 | 171.3 |
| A | 3 | 62 | 190616 | 1108.75 | 697 | 679 | 171.3 |
| B | 5 | 185 | 855005 | 5837.84 | 680 | 657 | 146.3 |
| B | 4 | 206 | 827460 | 5649.62 | 680 | 657 | 146.3 |
| B | 8 | 128 | 142504 | 969.25 | 680 | 657 | 146.3 |
| C | 15 | 215 | 297504 | 1629.94 | 664 | 657 | 182.1 |
| C | 9 | 38 | 119873 | 654.59 | 664 | 657 | 182.1 |
| C | 6 | 223 | 103842 | 566.57 | 664 | 657 | 182.1 |
| D | 2 | 249 | 492049 | 2588.8 | 664 | 632 | 189.8 |
| D | 8 | 240 | 180389 | 946.96 | 664 | 632 | 189.8 |
| D | 5 | 173 | 53414 | 278.05 | 664 | 632 | 189.8 |
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 |  |