Observation information
- date-obs: 2025-06-21
- time-obs: 20:20:02.409900000
- date-end: 2025-06-21
- time-end: 22:26:20.392400000
- obs_id: C09_011T06_9000006478
- exposure: 4201.70328039
- 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_52643cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52643cztM0_level2_quad_clean.evt
|
| Size (bytes) | 734,371,200 | 83,327,040 |
| Size | 700.4 MB
| 79.5 MB
|
| Events in quadrant A | 4,284,233 | 603,374 |
| Events in quadrant B | 4,659,942 | 643,313 |
| Events in quadrant C | 9,533,693 | 396,190 |
| Events in quadrant D | 8,208,833 | 431,379 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17256 | 2 |
| B | 0 | 18545 | 2 |
| C | 0 | 32796 | 2 |
| D | 0 | 28884 | 2 |
| 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 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6423 | 288 | 4.483886% |
| B | 6424 | 388 | 6.039851% |
| C | 6424 | 2494 | 38.823163% |
| D | 6424 | 1599 | 24.891034% |
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 | 7578 | 6424 | 185 | 185 | 2.44% | 2.88% |  |
| B | 7579 | 6425 | 271 | 271 | 3.58% | 4.22% |  |
| C | 7579 | 6424 | 2074 | 2074 | 27.37% | 32.29% |  |
| D | 7578 | 6424 | 1417 | 1417 | 18.70% | 22.06% |  |
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 | 3 | 14 | 505859 | 3076.56 | 655 | 638 | 164.2 |
| A | 5 | 243 | 300525 | 1826.17 | 655 | 638 | 164.2 |
| A | 4 | 95 | 265505 | 1612.92 | 655 | 638 | 164.2 |
| B | 10 | 128 | 924277 | 6698.43 | 655 | 633 | 137.9 |
| B | 4 | 158 | 535482 | 3878.82 | 655 | 633 | 137.9 |
| B | 10 | 247 | 98030 | 706.34 | 655 | 633 | 137.9 |
| C | 15 | 178 | 5364775 | 36602.49 | 526 | 521 | 146.6 |
| C | 15 | 248 | 1634830 | 11151.56 | 526 | 521 | 146.6 |
| C | 13 | 3 | 185676 | 1263.39 | 526 | 521 | 146.6 |
| D | 15 | 93 | 1805810 | 11065.63 | 565 | 539 | 163.1 |
| D | 8 | 176 | 1180012 | 7229.73 | 565 | 539 | 163.1 |
| D | 12 | 17 | 945317 | 5791.14 | 565 | 539 | 163.1 |
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 |  |