Trigger rejection factors for the \ac{EMC}-L1 $\gamma$ (low) (green), \ac{EMC}-L1 $\gamma$ (high) (cyan) and the PHOS-PHI7 (red) trigger as a function of the cluster energy. The dip in the \ac{EMC}-L1 $\gamma$ (high)/\ac{EMC}-L1 $\gamma$ (low) ratio arises due to the trigger turn-on of the \ac{EMC}-L1 $\gamma$ (low) trigger of about $4$ \GeV as explained in \Sec{sec:EventSelection}.