Observation information
- date-obs: 2025-06-15
- time-obs: 23:48:38.513200000
- date-end: 2025-06-16
- time-end: 01:57:36.490100000
- obs_id: C09_011T06_9000006478
- exposure: 5312.54495567
- 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_52556cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52556cztM0_level2_quad_clean.evt
|
| Size (bytes) | 611,424,000 | 91,192,320 |
| Size | 583.1 MB
| 87.0 MB
|
| Events in quadrant A | 3,321,520 | 626,560 |
| Events in quadrant B | 5,536,586 | 650,043 |
| Events in quadrant C | 5,048,769 | 568,879 |
| Events in quadrant D | 8,215,089 | 455,743 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14969 | 2 |
| B | 0 | 21023 | 2 |
| C | 0 | 19848 | 2 |
| D | 0 | 29036 | 2 |
| 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 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6593 | 111 | 1.683604% |
| B | 6593 | 414 | 6.279387% |
| C | 6593 | 546 | 8.281511% |
| D | 6594 | 1478 | 22.414316% |
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 | 7738 | 6595 | 103 | 103 | 1.33% | 1.56% |  |
| B | 7738 | 6595 | 230 | 230 | 2.97% | 3.49% |  |
| C | 7738 | 6595 | 443 | 443 | 5.72% | 6.72% |  |
| D | 7739 | 6596 | 1305 | 1305 | 16.86% | 19.78% |  |
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 | 12 | 80 | 327821 | 1925.45 | 677 | 659 | 169.9 |
| A | 13 | 248 | 65806 | 383.41 | 677 | 659 | 169.9 |
| A | 4 | 159 | 63233 | 368.27 | 677 | 659 | 169.9 |
| B | 4 | 170 | 1150245 | 8222.78 | 662 | 640 | 139.8 |
| B | 10 | 254 | 646519 | 4619.78 | 662 | 640 | 139.8 |
| B | 10 | 44 | 498542 | 3561.34 | 662 | 640 | 139.8 |
| C | 15 | 224 | 899629 | 5092.96 | 639 | 634 | 176.5 |
| C | 15 | 248 | 608156 | 3441.72 | 639 | 634 | 176.5 |
| C | 13 | 3 | 367507 | 2078.4 | 639 | 634 | 176.5 |
| D | 6 | 42 | 2454818 | 14506.61 | 585 | 558 | 169.2 |
| D | 8 | 176 | 772390 | 4562.13 | 585 | 558 | 169.2 |
| D | 12 | 17 | 566165 | 3343.18 | 585 | 558 | 169.2 |
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 |  |