1. A method of evaluating a signal produced during scanning of a chemical array by a chemical array scanner for generating an integrated single pixel signal, comprising: identifying a set of conformant digital signals and a set of non-conformant digital signals for generating said single pixel signal, wherein said conformant digital signals have a magnitude within a range defined by a threshold and said non-conformant digital signals have a magnitude outside of said range; then integrating said conformant digital signals and not the non-conformant digital signals, wherein said integrating produces data for generating said single pixel; and storing said data on a computer hard-drive, wherein said data is produced by said scanner and said method is implemented by said scanner.