Observation information
- date-obs: 2016-10-17
- time-obs: 13:55:36.480200000
- date-end: 2016-10-17
- time-end: 15:54:27.480300000
- obs_id: A02_098T01_9000000736
- exposure: 4681.16619667
- 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_05706cztM0_level2.evt
| modeM0/AS1A02_098T01_9000000736_05706cztM0_level2_quad_clean.evt
|
| Size (bytes) | 464,846,400 | 80,928,000 |
| Size | 443.3 MB
| 77.2 MB
|
| Events in quadrant A | 3,116,235 | 497,386 |
| Events in quadrant B | 3,899,703 | 494,386 |
| Events in quadrant C | 3,142,238 | 500,043 |
| Events in quadrant D | 3,454,727 | 481,906 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14151 | 2 |
| B | 0 | 16183 | 1 |
| C | 0 | 14406 | 1 |
| D | 0 | 15074 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6846 | 58 | 0.847210% |
| B | 6846 | 168 | 2.453988% |
| C | 6846 | 29 | 0.423605% |
| D | 6846 | 54 | 0.788782% |
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 | 7131 | 6847 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7131 | 6847 | 61 | 61 | 0.86% | 0.89% |  |
| C | 7131 | 6847 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7131 | 6847 | 19 | 19 | 0.27% | 0.28% |  |
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 | 11277 | 62.51 | 804 | 785 | 167.9 |
| A | 0 | 226 | 8139 | 43.81 | 804 | 785 | 167.9 |
| A | 12 | 194 | 7972 | 42.82 | 804 | 785 | 167.9 |
| B | 5 | 172 | 342066 | 2194.78 | 805 | 785 | 155.5 |
| B | 15 | 204 | 162183 | 1037.95 | 805 | 785 | 155.5 |
| B | 0 | 214 | 72013 | 458.07 | 805 | 785 | 155.5 |
| C | 9 | 16 | 94822 | 520.52 | 773 | 777 | 180.7 |
| C | 14 | 67 | 9226 | 46.76 | 773 | 777 | 180.7 |
| C | 1 | 16 | 6289 | 30.51 | 773 | 777 | 180.7 |
| D | 2 | 152 | 225574 | 1180.33 | 775 | 751 | 190.5 |
| D | 8 | 195 | 83911 | 436.59 | 775 | 751 | 190.5 |
| D | 12 | 233 | 82595 | 429.68 | 775 | 751 | 190.5 |
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 |  |