Observation information
- date-obs: 2025-08-11
- time-obs: 12:54:45.436800000
- date-end: 2025-08-11
- time-end: 14:50:19.429900000
- obs_id: C09_011T09_9000006494
- exposure: 1135.36852872
- 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_53396cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53396cztM0_level2_quad_clean.evt
|
| Size (bytes) | 866,629,440 | 67,285,440 |
| Size | 826.5 MB
| 64.2 MB
|
| Events in quadrant A | 4,047,049 | 569,679 |
| Events in quadrant B | 7,599,238 | 449,968 |
| Events in quadrant C | 13,663,124 | 104,751 |
| Events in quadrant D | 6,316,917 | 502,584 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16137 | 1 |
| B | 0 | 26605 | 1 |
| C | 0 | 44504 | 3 |
| D | 0 | 22931 | 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 | 5864 | 327 | 5.576398% |
| B | 5864 | 1908 | 32.537517% |
| C | 5864 | 4921 | 83.918827% |
| D | 5864 | 445 | 7.588677% |
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 | 6934 | 5864 | 198 | 198 | 2.86% | 3.38% |  |
| B | 6934 | 5864 | 1533 | 1533 | 22.11% | 26.14% |  |
| C | 6933 | 5863 | 4454 | 4454 | 64.24% | 75.97% |  |
| D | 6934 | 5864 | 412 | 412 | 5.94% | 7.03% |  |
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 | 484793 | 3118.65 | 621 | 606 | 155.3 |
| A | 0 | 8 | 401491 | 2582.1 | 621 | 606 | 155.3 |
| A | 3 | 63 | 294546 | 1893.27 | 621 | 606 | 155.3 |
| B | 2 | 249 | 3461065 | 31765.9 | 520 | 504 | 108.9 |
| B | 4 | 171 | 864309 | 7929.22 | 520 | 504 | 108.9 |
| B | 4 | 206 | 467440 | 4286.2 | 520 | 504 | 108.9 |
| C | 15 | 178 | 6131922 | 67085.98 | 326 | 323 | 91.4 |
| C | 1 | 241 | 4259287 | 46597.44 | 326 | 323 | 91.4 |
| C | 15 | 224 | 1188158 | 12996.13 | 326 | 323 | 91.4 |
| D | 0 | 18 | 2674444 | 15553.47 | 601 | 574 | 171.9 |
| D | 3 | 12 | 362874 | 2107.44 | 601 | 574 | 171.9 |
| D | 2 | 153 | 246703 | 1431.69 | 601 | 574 | 171.9 |
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 |  |