Observation information
- date-obs: 2025-07-28
- time-obs: 22:11:48.103700000
- date-end: 2025-07-29
- time-end: 00:34:37.084900000
- obs_id: C09_011T06_9000006490
- exposure: 1594.46715844
- 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_9000006490_53194cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53194cztM0_level2_quad_clean.evt
|
| Size (bytes) | 812,350,080 | 79,842,240 |
| Size | 774.7 MB
| 76.1 MB
|
| Events in quadrant A | 3,033,253 | 633,065 |
| Events in quadrant B | 3,238,760 | 687,594 |
| Events in quadrant C | 7,999,215 | 508,811 |
| Events in quadrant D | 15,307,141 | 144,894 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13882 | 2 |
| B | 0 | 14024 | 2 |
| C | 0 | 28101 | 2 |
| D | 0 | 49800 | 4 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6352 | 83 | 1.306675% |
| B | 6352 | 61 | 0.960327% |
| C | 6352 | 1392 | 21.914358% |
| D | 6351 | 5037 | 79.310345% |
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 | 7562 | 6352 | 43 | 43 | 0.57% | 0.68% |  |
| B | 7562 | 6353 | 21 | 21 | 0.28% | 0.33% |  |
| C | 7562 | 6353 | 1450 | 1450 | 19.17% | 22.82% |  |
| D | 7560 | 6350 | 5245 | 5245 | 69.38% | 82.60% |  |
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 | 0 | 8 | 103926 | 618.41 | 665 | 648 | 167.0 |
| A | 15 | 174 | 86236 | 512.49 | 665 | 648 | 167.0 |
| A | 3 | 62 | 77894 | 462.54 | 665 | 648 | 167.0 |
| B | 4 | 81 | 147721 | 1048.47 | 668 | 646 | 140.3 |
| B | 1 | 255 | 132245 | 938.15 | 668 | 646 | 140.3 |
| B | 0 | 213 | 53292 | 375.3 | 668 | 646 | 140.3 |
| C | 0 | 240 | 1812068 | 10692.06 | 613 | 606 | 169.4 |
| C | 15 | 224 | 1561043 | 9210.4 | 613 | 606 | 169.4 |
| C | 1 | 241 | 981864 | 5791.82 | 613 | 606 | 169.4 |
| D | 15 | 125 | 12048809 | 99050.3 | 416 | 396 | 121.6 |
| D | 12 | 3 | 378653 | 3109.66 | 416 | 396 | 121.6 |
| D | 2 | 62 | 280441 | 2302.26 | 416 | 396 | 121.6 |
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 |  |