Observation information
- date-obs: 2025-08-12
- time-obs: 23:15:24.143900000
- date-end: 2025-08-13
- time-end: 01:30:03.106300000
- obs_id: C09_011T09_9000006494
- exposure: 2611.63681906
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T09_9000006494_53417cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53417cztM0_level2_quad_clean.evt
|
| Size (bytes) | 952,076,160 | 98,637,120 |
| Size | 908.0 MB
| 94.1 MB
|
| Events in quadrant A | 5,344,260 | 741,256 |
| Events in quadrant B | 6,748,782 | 765,094 |
| Events in quadrant C | 17,468,169 | 240,588 |
| Events in quadrant D | 5,056,925 | 679,134 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21629 | 1 |
| B | 0 | 25730 | 1 |
| C | 0 | 57297 | 1 |
| D | 0 | 20868 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8065 | 351 | 4.352139% |
| B | 8065 | 787 | 9.758215% |
| C | 8065 | 5781 | 71.680099% |
| D | 8065 | 284 | 3.521389% |
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 | 8080 | 8066 | 281 | 281 | 3.48% | 3.48% |  |
| B | 8080 | 8066 | 524 | 524 | 6.49% | 6.50% |  |
| C | 8080 | 8065 | 5550 | 5550 | 68.69% | 68.82% |  |
| D | 8080 | 8066 | 238 | 238 | 2.95% | 2.95% |  |
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 | 174 | 691516 | 3332.83 | 838 | 815 | 207.2 |
| A | 3 | 63 | 581362 | 2801.31 | 838 | 815 | 207.2 |
| A | 3 | 62 | 203144 | 976.29 | 838 | 815 | 207.2 |
| B | 4 | 206 | 1951614 | 11212.75 | 825 | 797 | 174.0 |
| B | 4 | 171 | 329117 | 1887.09 | 825 | 797 | 174.0 |
| B | 10 | 254 | 279057 | 1599.36 | 825 | 797 | 174.0 |
| C | 1 | 241 | 9879201 | 71899.18 | 496 | 492 | 137.4 |
| C | 15 | 224 | 4127943 | 30040.4 | 496 | 492 | 137.4 |
| C | 9 | 38 | 566422 | 4118.95 | 496 | 492 | 137.4 |
| D | 3 | 12 | 384532 | 1632.88 | 821 | 780 | 235.0 |
| D | 0 | 18 | 330794 | 1404.22 | 821 | 780 | 235.0 |
| D | 2 | 153 | 205891 | 872.75 | 821 | 780 | 235.0 |
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 |  |