Observation information
- date-obs: 2025-06-17
- time-obs: 20:48:36.164900000
- date-end: 2025-06-17
- time-end: 23:00:36.147700000
- obs_id: C09_011T06_9000006478
- exposure: 4676.20704371
- 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_011T06_9000006478_52584cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52584cztM0_level2_quad_clean.evt
|
| Size (bytes) | 647,807,040 | 88,712,640 |
| Size | 617.8 MB
| 84.6 MB
|
| Events in quadrant A | 3,457,596 | 628,234 |
| Events in quadrant B | 5,452,354 | 629,906 |
| Events in quadrant C | 5,283,123 | 561,628 |
| Events in quadrant D | 9,291,046 | 419,632 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15034 | 2 |
| B | 0 | 20646 | 2 |
| C | 0 | 20215 | 2 |
| D | 0 | 32101 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6399 | 100 | 1.562744% |
| B | 6399 | 551 | 8.610720% |
| C | 6399 | 598 | 9.345210% |
| D | 6399 | 1975 | 30.864198% |
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 | 7594 | 6400 | 87 | 87 | 1.15% | 1.36% |  |
| B | 7594 | 6400 | 400 | 400 | 5.27% | 6.25% |  |
| C | 7594 | 6400 | 549 | 549 | 7.23% | 8.58% |  |
| D | 7594 | 6399 | 1786 | 1786 | 23.52% | 27.91% |  |
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 | 5 | 243 | 281841 | 1655.9 | 673 | 654 | 169.8 |
| A | 4 | 249 | 189220 | 1110.46 | 673 | 654 | 169.8 |
| A | 3 | 14 | 115563 | 676.7 | 673 | 654 | 169.8 |
| B | 10 | 254 | 1134805 | 8387.49 | 646 | 625 | 135.2 |
| B | 1 | 238 | 549934 | 4062.25 | 646 | 625 | 135.2 |
| B | 4 | 171 | 440960 | 3256.36 | 646 | 625 | 135.2 |
| C | 15 | 248 | 1783187 | 10059.79 | 640 | 635 | 177.2 |
| C | 15 | 224 | 388842 | 2190.84 | 640 | 635 | 177.2 |
| C | 15 | 178 | 188004 | 1057.41 | 640 | 635 | 177.2 |
| D | 8 | 176 | 3337551 | 20836.66 | 550 | 523 | 160.2 |
| D | 15 | 125 | 1674403 | 10451.83 | 550 | 523 | 160.2 |
| D | 6 | 42 | 979296 | 6111.53 | 550 | 523 | 160.2 |
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 |  |