Observation information
- date-obs: 2017-07-13
- time-obs: 04:33:14.649300000
- date-end: 2017-07-13
- time-end: 06:51:32.650000000
- obs_id: A02_198T01_9000001376
- exposure: 3060.27873655
- sourceid: 4U 1538-52
- observer: varun
- ra_pnt: 235.5973
- dec_pnt: -52.386
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A02_198T01_9000001376_09682cztM0_level2.evt
| modeM0/AS1A02_198T01_9000001376_09682cztM0_level2_quad_clean.evt
|
| Size (bytes) | 447,422,400 | 69,986,880 |
| Size | 426.7 MB
| 66.7 MB
|
| Events in quadrant A | 3,425,891 | 411,885 |
| Events in quadrant B | 3,316,094 | 426,886 |
| Events in quadrant C | 3,102,604 | 431,522 |
| Events in quadrant D | 3,283,266 | 414,806 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21 | 0 |
| B | 0 | 21 | 0 |
| C | 0 | 21 | 0 |
| D | 0 | 22 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13926 | 3 |
| B | 0 | 13595 | 2 |
| C | 0 | 13084 | 2 |
| D | 0 | 13717 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6225 | 214 | 3.437751% |
| B | 6225 | 118 | 1.895582% |
| C | 6225 | 80 | 1.285141% |
| D | 6225 | 80 | 1.285141% |
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 | 7490 | 6226 | 119 | 119 | 1.59% | 1.91% |  |
| B | 7490 | 6226 | 17 | 17 | 0.23% | 0.27% |  |
| C | 7490 | 6226 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7490 | 6226 | 1 | 1 | 0.01% | 0.02% |  |
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 | 355218 | 2236.52 | 791 | 776 | 158.5 |
| A | 1 | 162 | 17413 | 104.98 | 791 | 776 | 158.5 |
| A | 0 | 226 | 7318 | 41.28 | 791 | 776 | 158.5 |
| B | 10 | 252 | 89451 | 589.17 | 804 | 784 | 150.5 |
| B | 0 | 214 | 57834 | 379.09 | 804 | 784 | 150.5 |
| B | 0 | 219 | 28999 | 187.48 | 804 | 784 | 150.5 |
| C | 9 | 68 | 20566 | 110.74 | 789 | 793 | 178.5 |
| C | 13 | 61 | 5909 | 28.65 | 789 | 793 | 178.5 |
| C | 14 | 67 | 3704 | 16.3 | 789 | 793 | 178.5 |
| D | 1 | 52 | 170372 | 912.84 | 781 | 765 | 185.8 |
| D | 8 | 195 | 100679 | 537.75 | 781 | 765 | 185.8 |
| D | 2 | 152 | 28017 | 146.67 | 781 | 765 | 185.8 |
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 |  |