make_units_sci.py

# Licensed under a 3-clause BSD style license - see LICENSE.rst
"""
Make a unit_system consistent with usual CXC Science units where all temperatures
are in degC instead of Kelvins.  Otherwise leave the CXC units untouched.
"""

import pickle

units_cxc = pickle.load(open("units_cxc.pkl"))
units_sci = dict(
    (msid, "DEGC") for msid, unit in units_cxc.items() if unit in ("K", "deltaK")
)
pickle.dump(units_sci, open("units_sci.pkl", "wb"))