Observation information
- date-obs: 2018-08-09
- time-obs: 14:16:09.410200000
- date-end: 2018-08-09
- time-end: 15:15:26.409000000
- obs_id: G08_036T01_9000002290
- exposure: 1393.8708784
- sourceid: 4U 1820-30
- observer: jsyadav
- ra_pnt: 275.919
- dec_pnt: -30.36128
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_036T01_9000002290_15489cztM0_level2.evt
| modeM0/AS1G08_036T01_9000002290_15489cztM0_level2_quad_clean.evt
|
| Size (bytes) | 222,439,680 | 31,233,600 |
| Size | 212.1 MB
| 29.8 MB
|
| Events in quadrant A | 1,332,995 | 196,584 |
| Events in quadrant B | 1,393,580 | 200,595 |
| Events in quadrant C | 1,369,733 | 191,429 |
| Events in quadrant D | 2,472,607 | 181,145 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5399 | 2 |
| B | 0 | 5615 | 1 |
| C | 0 | 5503 | 1 |
| D | 0 | 9050 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50 | 0 |
| B | 0 | 50 | 0 |
| C | 0 | 50 | 0 |
| D | 0 | 50 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 2437 | 111 | 4.554780% |
| B | 2437 | 112 | 4.595815% |
| C | 2437 | 114 | 4.677883% |
| D | 2437 | 498 | 20.434961% |
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 | 3558 | 2438 | 1 | 1 | 0.03% | 0.04% |  |
| B | 3558 | 2439 | 2 | 2 | 0.06% | 0.08% |  |
| C | 3558 | 2439 | 3 | 3 | 0.08% | 0.12% |  |
| D | 3558 | 2439 | 341 | 341 | 9.58% | 13.98% |  |
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 | 253 | 15310 | 213.17 | 339 | 331 | 70.3 |
| A | 9 | 143 | 9328 | 128.04 | 339 | 331 | 70.3 |
| A | 14 | 238 | 4589 | 60.6 | 339 | 331 | 70.3 |
| B | 10 | 245 | 44327 | 664.28 | 336 | 328 | 66.2 |
| B | 0 | 229 | 9449 | 137.71 | 336 | 328 | 66.2 |
| B | 0 | 189 | 9195 | 133.87 | 336 | 328 | 66.2 |
| C | 14 | 238 | 49684 | 648.41 | 321 | 321 | 76.1 |
| C | 9 | 54 | 32426 | 421.72 | 321 | 321 | 76.1 |
| C | 3 | 233 | 28554 | 370.86 | 321 | 321 | 76.1 |
| D | 1 | 52 | 899291 | 11816.46 | 301 | 291 | 76.1 |
| D | 5 | 222 | 343687 | 4513.6 | 301 | 291 | 76.1 |
| D | 10 | 70 | 62902 | 822.96 | 301 | 291 | 76.1 |
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 |  |