... This paper reviews AstroVirgil, a user friendly program for the analysis of Chandra event files. ... Photons can be filtered using custom GUI panels based on spatial position (in multiple coordinate systems), photon energy level (using multiple measures) or time of arrival. ... With AstroVirgil, the user can filter photons based on their time of arrival. ... A group of students at Somerville High School is currently working on Science Fair projects using AstroVirgil and Chandra data. ...