Observation information
- date-obs: 2025-07-27
- time-obs: 05:00:16.430100000
- date-end: 2025-07-27
- time-end: 06:55:53.414400000
- obs_id: C09_011T06_9000006490
- exposure: 259.406108201
- 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_53168cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53168cztM0_level2_quad_clean.evt
|
| Size (bytes) | 931,011,840 | 67,613,760 |
| Size | 887.9 MB
| 64.5 MB
|
| Events in quadrant A | 4,388,368 | 566,242 |
| Events in quadrant B | 4,270,997 | 603,355 |
| Events in quadrant C | 8,946,484 | 418,363 |
| Events in quadrant D | 16,371,317 | 20,464 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 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 | 17579 | 56 |
| B | 0 | 17229 | 54 |
| C | 0 | 30990 | 35 |
| D | 0 | 53187 | 162 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6283 | 329 | 5.236352% |
| B | 6280 | 350 | 5.573248% |
| C | 6285 | 1905 | 30.310263% |
| D | 6273 | 6072 | 96.795791% |
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 | 6937 | 6289 | 240 | 240 | 3.46% | 3.82% |  |
| B | 6938 | 6289 | 159 | 159 | 2.29% | 2.53% |  |
| C | 6938 | 6292 | 1778 | 1778 | 25.63% | 28.26% |  |
| D | 6936 | 6276 | 5972 | 5972 | 86.10% | 95.16% |  |
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 | 8 | 249 | 439809 | 2775.9 | 628 | 611 | 158.2 |
| A | 12 | 3 | 416877 | 2630.96 | 628 | 611 | 158.2 |
| A | 3 | 62 | 358436 | 2261.59 | 628 | 611 | 158.2 |
| B | 10 | 191 | 1078719 | 8223.92 | 618 | 596 | 131.1 |
| B | 1 | 239 | 258492 | 1967.23 | 618 | 596 | 131.1 |
| B | 4 | 81 | 178823 | 1359.52 | 618 | 596 | 131.1 |
| C | 15 | 224 | 1887017 | 12549.79 | 542 | 535 | 150.3 |
| C | 0 | 240 | 1572699 | 10458.8 | 542 | 535 | 150.3 |
| C | 1 | 241 | 1297265 | 8626.48 | 542 | 535 | 150.3 |
| D | 15 | 125 | 15070219 | 246010.16 | 206 | 196 | 61.3 |
| D | 2 | 249 | 131455 | 2142.73 | 206 | 196 | 61.3 |
| D | 9 | 102 | 85481 | 1392.23 | 206 | 196 | 61.3 |
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 |  |