Isolated photon corrected purity in pp collisions at $\sqrt{s}=$ 7 TeV with $\pt^{\rm iso}< $ 2 GeV/$c$ and $|\eta^{\gamma}| < $ 0.27 calculated using Eq. 35, taken from [50] (left) and for pp and p$-$Pb collisions at $\sqrt{s_{\rm NN}}=$ 5.02 TeV with $|\eta^{\gamma}| < $ 0.67 using the template fit technique taken from [51] (right). The boxes indicate the systematic uncertainty, while the error bars reflect the statistical uncertainty. Figures are taken from the mentioned references.