Observation information
- date-obs: 2025-07-26
- time-obs: 18:29:16.520200000
- date-end: 2025-07-26
- time-end: 20:31:22.502500000
- obs_id: C09_011T06_9000006490
- exposure: 5712.21092558
- 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_53161cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53161cztM0_level2_quad_clean.evt
|
| Size (bytes) | 508,766,400 | 92,695,680 |
| Size | 485.2 MB
| 88.4 MB
|
| Events in quadrant A | 3,685,421 | 633,079 |
| Events in quadrant B | 5,164,959 | 616,700 |
| Events in quadrant C | 5,798,000 | 542,768 |
| Events in quadrant D | 3,690,966 | 570,752 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 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 | 15584 | 1 |
| B | 0 | 19770 | 3 |
| C | 0 | 21686 | 1 |
| D | 0 | 15690 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6356 | 140 | 2.202643% |
| B | 6356 | 610 | 9.597231% |
| C | 6356 | 685 | 10.777218% |
| D | 6356 | 207 | 3.256765% |
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 | 7326 | 6357 | 98 | 98 | 1.34% | 1.54% |  |
| B | 7326 | 6357 | 401 | 401 | 5.47% | 6.31% |  |
| C | 7326 | 6357 | 619 | 619 | 8.45% | 9.74% |  |
| D | 7326 | 6357 | 134 | 134 | 1.83% | 2.11% |  |
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 | 15 | 174 | 468200 | 2753.1 | 666 | 650 | 169.8 |
| A | 3 | 62 | 108036 | 632.33 | 666 | 650 | 169.8 |
| A | 0 | 8 | 78219 | 456.75 | 666 | 650 | 169.8 |
| B | 10 | 191 | 1977551 | 14490.59 | 641 | 619 | 136.4 |
| B | 4 | 81 | 251174 | 1836.53 | 641 | 619 | 136.4 |
| B | 1 | 239 | 106686 | 777.45 | 641 | 619 | 136.4 |
| C | 0 | 240 | 1046806 | 6009.71 | 626 | 619 | 174.1 |
| C | 15 | 224 | 737427 | 4232.52 | 626 | 619 | 174.1 |
| C | 1 | 241 | 619786 | 3556.74 | 626 | 619 | 174.1 |
| D | 10 | 172 | 263317 | 1406.64 | 650 | 619 | 186.8 |
| D | 12 | 3 | 221783 | 1184.24 | 650 | 619 | 186.8 |
| D | 2 | 120 | 148953 | 794.27 | 650 | 619 | 186.8 |
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 |  |