Create plot routine for extractor feets.extractors.ext_flux_percentile_ratio.FluxPercentileRatioMid20

[leliel12]

Create plot routine for extractor FluxPercentileRatioMid20.

Path: feets.extractors.ext_flux_percentile_ratio.py

Features

• FluxPercentileRatioMid20

Extractor Documentation

In order to caracterize the sorted magnitudes distribution we use percentiles. If F_5, 95 is the difference between 95% and 5% magnitude values, we calculate the following:

• flux_percentile_ratio_mid20: ratio F_40, 60/F_5, 95
• flux_percentile_ratio_mid35: ratio F_32.5, 67.5/F_5, 95
• flux_percentile_ratio_mid50: ratio F_25, 75/F_5, 95
• flux_percentile_ratio_mid65: ratio F_17.5, 82.5/F_5, 95
• flux_percentile_ratio_mid80: ratio F_10, 90/F_5, 95

For the first feature for example, in the case of a normal distribution, this is equivalente to calculate:

$$\frac{erf^{-1}(2 \cdot 0.6-1)-erf^{-1}(2 \cdot 0.4-1)} {erf^{-1}(2 \cdot 0.95-1)-erf^{-1}(2 \cdot 0.05-1)}$$

So, the expected values for each of the flux percentile features are:

• flux_percentile_ratio_mid20 = 0.154
• flux_percentile_ratio_mid35 = 0.275
• flux_percentile_ratio_mid50 = 0.410
• flux_percentile_ratio_mid65 = 0.568
• flux_percentile_ratio_mid80 = 0.779

References