Observation information
- date-obs: 2025-06-20
- time-obs: 08:11:24.703200000
- date-end: 2025-06-20
- time-end: 16:57:47.631200000
- obs_id: C09_011T06_9000006478
- exposure: 4786.48777235
- 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_52625cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52625cztM0_level2_quad_clean.evt
|
| Size (bytes) | 4,394,436,480 | 309,908,160 |
| Size | 4.1 GB
| 295.6 MB
|
| Events in quadrant A | 17,938,505 | 2,544,436 |
| Events in quadrant B | 31,371,318 | 2,675,301 |
| Events in quadrant C | 69,182,965 | 440,063 |
| Events in quadrant D | 41,997,333 | 1,768,804 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 72934 | 0 |
| B | 0 | 113206 | 0 |
| C | 0 | 224566 | 0 |
| D | 0 | 144510 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 32 | 0 |
| B | 0 | 32 | 0 |
| C | 0 | 32 | 0 |
| D | 0 | 32 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 578 | 0 |
| B | 0 | 578 | 0 |
| C | 0 | 578 | 0 |
| D | 0 | 578 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 28393 | 1676 | 5.902863% |
| B | 28394 | 2440 | 8.593365% |
| C | 28394 | 24228 | 85.327886% |
| D | 28393 | 8840 | 31.134435% |
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 | 31583 | 28400 | 1185 | 1185 | 3.75% | 4.17% |  |
| B | 31584 | 28401 | 1279 | 1279 | 4.05% | 4.50% |  |
| C | 31584 | 28396 | 22068 | 22068 | 69.87% | 77.72% |  |
| D | 31583 | 28400 | 7935 | 7935 | 25.12% | 27.94% |  |
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 | 110 | 2827875 | 3892.63 | 2893 | 2824 | 725.7 |
| A | 3 | 46 | 719517 | 987.53 | 2893 | 2824 | 725.7 |
| A | 8 | 246 | 590217 | 809.37 | 2893 | 2824 | 725.7 |
| B | 10 | 254 | 15777798 | 26151.51 | 2856 | 2756 | 603.2 |
| B | 8 | 234 | 749023 | 1237.14 | 2856 | 2756 | 603.2 |
| B | 10 | 128 | 731615 | 1208.29 | 2856 | 2756 | 603.2 |
| C | 15 | 248 | 62830798 | 183445.58 | 1240 | 1226 | 342.5 |
| C | 12 | 254 | 197284 | 572.44 | 1240 | 1226 | 342.5 |
| C | 15 | 147 | 159736 | 462.81 | 1240 | 1226 | 342.5 |
| D | 6 | 42 | 8279057 | 11259.05 | 2526 | 2401 | 735.1 |
| D | 12 | 17 | 5138503 | 6986.84 | 2526 | 2401 | 735.1 |
| D | 2 | 62 | 4325126 | 5880.37 | 2526 | 2401 | 735.1 |
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 |  |