Temperature to polarization leakage using BICEP3

Temperature to polarization leakage is one way for systematic noise to be interpreted as data. Using shapelets, we parameterize data from BICEP3. Detectors come in pairs and the pair difference shows the temperature to polarization leakage. We simulated temperature to polarization leakage from the differential shapelet coefficients at different expansion orders. Statistics were taken to create potential CMB S4 beams for further analysis. In the future, this analytical tool can be used to further explore current and future data when looking for temperature to polarization leakage.