Observation information
- date-obs: 2025-06-17
- time-obs: 19:10:08.177100000
- date-end: 2025-06-17
- time-end: 21:15:32.161100000
- obs_id: C09_011T06_9000006478
- exposure: 3827.18556845
- 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_52583cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52583cztM0_level2_quad_clean.evt
|
| Size (bytes) | 807,223,680 | 83,868,480 |
| Size | 769.8 MB
| 80.0 MB
|
| Events in quadrant A | 4,411,067 | 621,550 |
| Events in quadrant B | 6,182,128 | 632,760 |
| Events in quadrant C | 7,696,970 | 483,796 |
| Events in quadrant D | 11,097,180 | 355,029 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17611 | 2 |
| B | 0 | 22792 | 3 |
| C | 0 | 27341 | 2 |
| D | 0 | 37404 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 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 | 6389 | 271 | 4.241665% |
| B | 6389 | 583 | 9.125059% |
| C | 6389 | 1507 | 23.587416% |
| D | 6389 | 2831 | 44.310534% |
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 | 7524 | 6390 | 230 | 230 | 3.06% | 3.60% |  |
| B | 7524 | 6389 | 366 | 366 | 4.86% | 5.73% |  |
| C | 7524 | 6389 | 1442 | 1442 | 19.17% | 22.57% |  |
| D | 7524 | 6389 | 2842 | 2842 | 37.77% | 44.48% |  |
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 | 811633 | 4692.22 | 679 | 662 | 172.8 |
| A | 4 | 249 | 456265 | 2636.08 | 679 | 662 | 172.8 |
| A | 5 | 243 | 108179 | 622.09 | 679 | 662 | 172.8 |
| B | 10 | 254 | 2566846 | 18451.31 | 656 | 637 | 139.1 |
| B | 1 | 238 | 318495 | 2285.43 | 656 | 637 | 139.1 |
| B | 4 | 81 | 196553 | 1408.66 | 656 | 637 | 139.1 |
| C | 15 | 248 | 4374653 | 26152.25 | 601 | 593 | 167.3 |
| C | 15 | 224 | 374314 | 2234.46 | 601 | 593 | 167.3 |
| C | 13 | 3 | 267024 | 1592.98 | 601 | 593 | 167.3 |
| D | 6 | 42 | 5060628 | 31845.63 | 546 | 519 | 158.9 |
| D | 8 | 176 | 1857241 | 11685.22 | 546 | 519 | 158.9 |
| D | 15 | 125 | 976210 | 6140.48 | 546 | 519 | 158.9 |
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 |  |