Hi Syed, If any beamline is giving you data in a non-standard binary format and not providing software to deal with the data, either complain very loudly (and not to the people at the beamline -- complain to the people *paying* the people who are running the beamline), or use another beamline. I'd recommend both. There is absolutely no excuse for undocumented binary data formats. It is completely unacceptable. If there is a program to convert to a portable format, demand the source code for that program. That said, the ASCII file you have would be easily read by Athena if you added a '#' sign to the first column of every line before the actual array data starts. If you had the source code for the program that converted the binary file to the ASCII file, it would probably be easy to make such a change. If you don't have that source code, the binary data files are worthless. --Matt