Observation information
- date-obs: 2025-06-18
- time-obs: 05:32:56.944400000
- date-end: 2025-06-18
- time-end: 07:43:22.078400000
- obs_id: C09_011T06_9000006478
- exposure: 5434.60338533
- 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_52589cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52589cztM0_level2_quad_clean.evt
|
| Size (bytes) | 755,280,000 | 102,072,960 |
| Size | 720.3 MB
| 97.3 MB
|
| Events in quadrant A | 4,548,703 | 705,529 |
| Events in quadrant B | 11,950,162 | 539,374 |
| Events in quadrant C | 4,793,582 | 679,155 |
| Events in quadrant D | 6,059,542 | 622,094 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19322 | 0 |
| B | 0 | 40873 | 0 |
| C | 0 | 19655 | 6 |
| D | 0 | 23608 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 156 | 0 |
| B | 0 | 156 | 0 |
| C | 0 | 156 | 0 |
| D | 0 | 156 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7826 | 220 | 2.811142% |
| B | 7826 | 2898 | 37.030411% |
| C | 7825 | 156 | 1.993610% |
| D | 7826 | 387 | 4.945055% |
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 | 7826 | 7826 | 225 | 225 | 2.88% | 2.88% |  |
| B | 7826 | 7826 | 2646 | 2646 | 33.81% | 33.81% |  |
| C | 7824 | 7824 | 138 | 138 | 1.76% | 1.76% |  |
| D | 7826 | 7826 | 365 | 365 | 4.66% | 4.66% |  |
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 | 130 | 356933 | 1804.96 | 793 | 773 | 197.3 |
| A | 12 | 80 | 284145 | 1436.08 | 793 | 773 | 197.3 |
| A | 4 | 249 | 207567 | 1048.0 | 793 | 773 | 197.3 |
| B | 10 | 254 | 8190089 | 52188.31 | 741 | 714 | 156.9 |
| B | 1 | 255 | 141664 | 898.23 | 741 | 714 | 156.9 |
| B | 4 | 81 | 137377 | 870.91 | 741 | 714 | 156.9 |
| C | 15 | 224 | 1021249 | 4814.52 | 768 | 762 | 212.0 |
| C | 15 | 248 | 256629 | 1207.14 | 768 | 762 | 212.0 |
| C | 12 | 249 | 82044 | 383.48 | 768 | 762 | 212.0 |
| D | 15 | 125 | 770267 | 3581.97 | 756 | 721 | 214.8 |
| D | 8 | 176 | 640276 | 2976.91 | 756 | 721 | 214.8 |
| D | 6 | 42 | 348621 | 1619.35 | 756 | 721 | 214.8 |
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 |  |