aspect -- Computes the euler angles of the best aspect point.
aspect infile outfile verbose_parameter
The ASPECT task reads euler angles from an output file generated by the ftool ATTITUDE and computes the euler angles for the best aspect point. First, it bins the first two Euler angles into 0.01 degree bins and then selects the set of four adjacent bins which contains the largest number of points. The mean of all three Euler angles is calculated for the points that fall within these bins. The output is the three Euler angles describing the attitude of the x-y-z axes of the spacecraft. Note that this is different from the mean pointing of the XRT and from the poining of each individual telescope. See the attitude and ascalin FTOOL documentation for more details.
The evaluated values of the three Euler angles are written to the parameter file as well as to the defined output file. If the "VERBOSE" option is set to "y", then a list of bin counts and sums for each euler angle is printed. The default value for VERBOSE is "n".
attitude and ascalin