Reference application for digital X-ray non-destructive testing in industry. Contains tools for calculating the main quality indicators, parameters and control schemes, as well as training cases with the main problems and errors made by users when obtaining a digital X-ray image. All calculation tools comply with the requirements of NTD (GOST ISO 17636-2 (class A, B), GOST 7512 (class 1, 2, 3), ASME).