Observation information
- date-obs: 2025-06-24
- time-obs: 09:32:03.910400000
- date-end: 2025-06-24
- time-end: 11:29:31.893700000
- obs_id: C09_011T07_9000006480
- exposure: 3924.88448197
- 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_52861cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006480_52861cztM0_level2_quad_clean.evt
|
| Size (bytes) | 728,991,360 | 76,668,480 |
| Size | 695.2 MB
| 73.1 MB
|
| Events in quadrant A | 7,533,694 | 497,704 |
| Events in quadrant B | 9,341,616 | 413,794 |
| Events in quadrant C | 4,502,251 | 510,213 |
| Events in quadrant D | 5,151,856 | 486,999 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26491 | 6 |
| B | 0 | 31887 | 1 |
| C | 0 | 17466 | 1 |
| D | 0 | 19320 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5892 | 1234 | 20.943652% |
| B | 5893 | 2255 | 38.265739% |
| C | 5893 | 533 | 9.044629% |
| D | 5893 | 599 | 10.164602% |
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 | 7047 | 5893 | 1167 | 1167 | 16.56% | 19.80% |  |
| B | 7048 | 5894 | 1847 | 1847 | 26.21% | 31.34% |  |
| C | 7048 | 5894 | 398 | 398 | 5.65% | 6.75% |  |
| D | 7048 | 5894 | 520 | 520 | 7.38% | 8.82% |  |
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 | 3427630 | 23134.26 | 593 | 580 | 148.1 |
| A | 3 | 62 | 1075643 | 7257.2 | 593 | 580 | 148.1 |
| A | 5 | 241 | 106404 | 714.36 | 593 | 580 | 148.1 |
| B | 8 | 3 | 6487282 | 58361.79 | 528 | 510 | 111.1 |
| B | 0 | 213 | 237044 | 2128.11 | 528 | 510 | 111.1 |
| B | 10 | 254 | 80344 | 718.27 | 528 | 510 | 111.1 |
| C | 15 | 224 | 1377124 | 8404.84 | 591 | 584 | 163.8 |
| C | 13 | 3 | 352139 | 2146.51 | 591 | 584 | 163.8 |
| C | 1 | 44 | 89222 | 541.2 | 591 | 584 | 163.8 |
| D | 8 | 176 | 1058903 | 6287.38 | 594 | 568 | 168.3 |
| D | 2 | 37 | 816610 | 4847.96 | 594 | 568 | 168.3 |
| D | 12 | 17 | 230924 | 1368.5 | 594 | 568 | 168.3 |
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 |  |