Use a python interactive cursor code (zpclean.py) to inspect an (X,Y) parameter space drawn from a table file.

% table_xy_boxclean --help    

This is a code that may be in flux for some time. Right now (May2018) I just produce simple statistics for the points that are inside the user-specified box. However, I'll soon produce a file that gives the line numbers (in the original table file) of box and non-box members. Here is the most recent help info:

table_xy_boxclean:
  Form a plot of two column taken from a table file and display it 
with a script that enables a python cursor mode. The user sets a 
bottom-lower-corner (BLC) and a tope-right-corner (TRC) and the script 
isolates all points with in that box and computes basic statistical 
measurements. 

Usage: table_xy_boxclean ZPSEC Peak ZPSEC Y 
arg1 - basename of the table file (A for A.table)  
arg2 - parameter name for X axis  
arg3 - parameter name for Y axis  
arg4 - run in debug mode? (Y/N) 

This routine, developed in early May2018, is a more general version of
the zpadopt coe I used to calibrate images using USNO-B1.0  magnitides. 
It will surely change, so I will not place any examples here yet.

Current Output: 
table_xy_boxclean.Xstats, table_xy_boxclean.Ystats
Each contains, for points in the box, the X,Y statistics: 
  mean  stan.dev.   Min  Max    Median   Npnts   m.e.