In microarray data analysis, the CEL file stores the results of the intensity calculations on the pixel values of the .DAT file (which is the image file). A single representative intensity value is stored per cell (feature) of the image. Each value in a .CEL file is a statistical "summary" of the fluorescence from a single feature. The majority of the microarray data analysis programs, including dChip, MAT and Bioconductor, use the summary probe level values found in CEL files as the basis of their analyses. The .CEL file contains the information for viewing the images that result from scanning the hybridized arrays.
The CEL format is not a text-based file. As such, its contents cannot be displayed here.