Observation information
- date-obs: 2025-06-24
- time-obs: 04:09:52.952500000
- date-end: 2025-06-24
- time-end: 06:13:50.935800000
- obs_id: C09_011T07_9000006480
- exposure: 4522.19672167
- 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_011T07_9000006480_52858cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52858cztM0_level2_quad_clean.evt
|
| Size (bytes) | 836,438,400 | 81,668,160 |
| Size | 797.7 MB
| 77.9 MB
|
| Events in quadrant A | 7,704,374 | 550,532 |
| Events in quadrant B | 9,473,588 | 477,398 |
| Events in quadrant C | 4,757,255 | 555,501 |
| Events in quadrant D | 8,533,978 | 443,058 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 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 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27422 | 1 |
| B | 0 | 32604 | 1 |
| C | 0 | 18843 | 1 |
| D | 0 | 29783 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6388 | 1120 | 17.532874% |
| B | 6389 | 2169 | 33.948975% |
| C | 6389 | 561 | 8.780717% |
| D | 6389 | 1634 | 25.575207% |
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 | 7438 | 6389 | 1064 | 1064 | 14.30% | 16.65% |  |
| B | 7439 | 6390 | 1897 | 1897 | 25.50% | 29.69% |  |
| C | 7439 | 6390 | 512 | 512 | 6.88% | 8.01% |  |
| D | 7439 | 6390 | 1632 | 1632 | 21.94% | 25.54% |  |
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 | 9 | 191 | 2590591 | 15879.84 | 643 | 628 | 163.1 |
| A | 3 | 62 | 982759 | 6021.74 | 643 | 628 | 163.1 |
| A | 3 | 14 | 936788 | 5739.88 | 643 | 628 | 163.1 |
| B | 8 | 3 | 6705370 | 53524.24 | 592 | 575 | 125.3 |
| B | 4 | 81 | 60581 | 479.03 | 592 | 575 | 125.3 |
| B | 0 | 171 | 60200 | 475.99 | 592 | 575 | 125.3 |
| C | 15 | 224 | 817065 | 4667.12 | 628 | 622 | 174.9 |
| C | 13 | 3 | 591966 | 3380.37 | 628 | 622 | 174.9 |
| C | 14 | 246 | 277144 | 1580.71 | 628 | 622 | 174.9 |
| D | 8 | 176 | 1932322 | 11688.6 | 581 | 557 | 165.3 |
| D | 12 | 2 | 1851924 | 11202.13 | 581 | 557 | 165.3 |
| D | 7 | 96 | 1000620 | 6051.12 | 581 | 557 | 165.3 |
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 |  |