The HEASARC is running nominally. If you are trying to download a lot of data, please consider using the AWS cloud copy of most HEASARC data. As an alternative to locally installing HEASoft, SciServer is an online platform which has the software installed and data available when you login.
set xyname
Sets the column names used for accumulating the image in the extract command. If the column names are not in the mission database file then the user will be prompted for the size keywords for both axes. If the TLMAX keyword is included for the specified column then the user should enter the string TLMAX. If this keyword is not available then another should be given. This keyword will be used to set the size of the output image.