A method and system for employing pixel-based, signal-intensity data contained within areas (802, 804, 806, 808, 810, 814, 822) of a scanned image of a molecular array corresponding to features (802, 810, 812, 820) and feature backgrounds (804, 806, 808) in order to determine whether or not the features or feature backgrounds have non-uniform signal intensities and are thus outlier features and outlier feature backgrounds. A calculated, estimated variance for the signal intensities within a feature or feature background is compared to a maximum allowable variance calculated for the feature or feature background based on a signal intensity variance model. When the experimental variance is less than or equal to the maximum allowable variance, the feature (802) or feature background (804) is considered to have acceptable signal-intensity uniformity. Otherwise, the feature (810, 812, 822) or feature background (806, 808) is flagged as an outlier feature or outlier feature background. <IMAGE> <IMAGE>
Method and system for identifying non-uniform measure signal distribution