Impact of Instrumental Systematic Contamination on the Lensing Mass Reconstruction using the CMB Polarization

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In this paper, we study the effects of instrumental systematics on the reconstruction of the deflection angle power spectrum from weak lensing of Cosmic Microwave Background (CMB) temperature and polarization observations.

• We consider seven types of effects which are related to known instrumental systematics: calibration, rotation, pointing, spin-flip, monopole leakage, dipole leakage and quadrupole leakage.
• These effects can be characterized by 11 distortion fields.
• Each of these systematic effects can mimic the effective projected matter power spectrum and hence contaminate the lensing reconstruction.