Observation information
- date-obs: 2016-10-18
- time-obs: 12:32:43.460900000
- date-end: 2016-10-18
- time-end: 14:35:11.460500000
- obs_id: A02_098T01_9000000736
- exposure: 4615.0043167
- sourceid: 4U 1820-30
- observer: jayashreeroy
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_098T01_9000000736_05720cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05720cztM0_level2_quad_clean.evt
|
| Size (bytes) | 522,120,960 | 79,879,680 |
| Size | 497.9 MB
| 76.2 MB
|
| Events in quadrant A | 3,238,657 | 493,308 |
| Events in quadrant B | 4,187,986 | 486,139 |
| Events in quadrant C | 3,139,011 | 496,861 |
| Events in quadrant D | 4,784,847 | 467,700 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14381 | 2 |
| B | 0 | 16906 | 1 |
| C | 0 | 14189 | 1 |
| D | 0 | 18757 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5 | 0 |
| B | 0 | 5 | 0 |
| C | 0 | 5 | 0 |
| D | 0 | 5 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6803 | 79 | 1.161252% |
| B | 6803 | 233 | 3.424960% |
| C | 6803 | 38 | 0.558577% |
| D | 6803 | 255 | 3.748346% |
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 | 7348 | 6804 | 10 | 10 | 0.14% | 0.15% |  |
| B | 7348 | 6804 | 138 | 138 | 1.88% | 2.03% |  |
| C | 7348 | 6804 | 3 | 3 | 0.04% | 0.04% |  |
| D | 7348 | 6804 | 242 | 242 | 3.29% | 3.56% |  |
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 | 0 | 50 | 119864 | 727.97 | 800 | 785 | 163.6 |
| A | 0 | 31 | 15338 | 88.97 | 800 | 785 | 163.6 |
| A | 0 | 226 | 7864 | 43.28 | 800 | 785 | 163.6 |
| B | 15 | 204 | 551903 | 3579.04 | 799 | 782 | 154.0 |
| B | 5 | 172 | 355112 | 2301.05 | 799 | 782 | 154.0 |
| B | 11 | 51 | 57352 | 367.37 | 799 | 782 | 154.0 |
| C | 9 | 16 | 96462 | 531.07 | 771 | 774 | 180.2 |
| C | 14 | 67 | 11517 | 59.62 | 771 | 774 | 180.2 |
| C | 8 | 128 | 10070 | 51.59 | 771 | 774 | 180.2 |
| D | 0 | 11 | 960523 | 5055.07 | 767 | 744 | 189.9 |
| D | 12 | 110 | 549787 | 2891.76 | 767 | 744 | 189.9 |
| D | 8 | 195 | 144019 | 754.62 | 767 | 744 | 189.9 |
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 |  |