Observation information
- date-obs: 2025-07-28
- time-obs: 19:04:37.129100000
- date-end: 2025-07-28
- time-end: 21:07:11.112800000
- obs_id: C09_011T06_9000006490
- exposure: 77.5334639549
- 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_53192cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53192cztM0_level2_quad_clean.evt
|
| Size (bytes) | 830,194,560 | 72,521,280 |
| Size | 791.7 MB
| 69.2 MB
|
| Events in quadrant A | 3,196,821 | 604,317 |
| Events in quadrant B | 3,660,289 | 635,785 |
| Events in quadrant C | 7,139,774 | 513,977 |
| Events in quadrant D | 16,251,264 | 6,569 |
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 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14146 | 1 |
| B | 0 | 15266 | 1 |
| C | 0 | 25561 | 1 |
| D | 0 | 52519 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6224 | 54 | 0.867609% |
| B | 6225 | 196 | 3.148594% |
| C | 6225 | 927 | 14.891566% |
| D | 6225 | 6171 | 99.132530% |
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 | 7354 | 6225 | 42 | 42 | 0.57% | 0.67% |  |
| B | 7355 | 6225 | 182 | 182 | 2.47% | 2.92% |  |
| C | 7355 | 6225 | 925 | 925 | 12.58% | 14.86% |  |
| D | 7354 | 6224 | 5987 | 5987 | 81.41% | 96.19% |  |
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 | 129201 | 790.75 | 647 | 631 | 162.6 |
| A | 0 | 8 | 125576 | 768.45 | 647 | 631 | 162.6 |
| A | 8 | 249 | 95340 | 582.49 | 647 | 631 | 162.6 |
| B | 1 | 255 | 664648 | 4902.43 | 640 | 618 | 135.4 |
| B | 10 | 247 | 89166 | 653.74 | 640 | 618 | 135.4 |
| B | 12 | 32 | 56912 | 415.61 | 640 | 618 | 135.4 |
| C | 15 | 224 | 2531962 | 15169.0 | 603 | 597 | 166.9 |
| C | 1 | 241 | 1357482 | 8131.02 | 603 | 597 | 166.9 |
| C | 10 | 22 | 268505 | 1605.42 | 603 | 597 | 166.9 |
| D | 15 | 125 | 15106638 | 283157.14 | 179 | 170 | 53.4 |
| D | 2 | 249 | 97243 | 1819.54 | 179 | 170 | 53.4 |
| D | 3 | 12 | 71821 | 1343.02 | 179 | 170 | 53.4 |
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 |  |