Effect of Finite Granularity of Detectors on Anisotropy Coefficients
  The coefficients that describe the anisotropy in the azimuthal distribution of particles are lower when the particles are recorded in a detector with finite granularity and measures only hits. This arises due to loss of information because of multiple hits in any channel. The magnitude of this loss of signal depends both on the occupancy and on the value of the coefficient. These correction factors are obtained for analysis methods differing in detail, and are found to be different. 
Sudhir Raniwala, Marek Idzik, Rashmi Raniwala, Yogendra P.Viyogi