"""
Tools for CALDB
"""
import os.path as osp
import logging
from glob import glob
from astropy.io import fits
logger = logging.getLogger(__name__)
[docs]def get_arf_files(workdir):
"""Return list of .fits where first extension have 3 columns
- ENERG_LO
- ENERG_HI
- SPECRESP
as ARF file must have
equal tSPECRESPo name.
:param workdir: directory containing .fits files
:type workdir: string
:return: list of ARF files
:rtype: list
"""
res = list()
l_fits_files = glob(osp.join(workdir, "ECL-RSP-ARF*.fits"))
for fits_file in l_fits_files:
logger.debug(fits_file)
try:
with fits.open(fits_file) as f_arf:
if f_arf[1].header['TTYPE1'] == 'ENERG_LO' and \
f_arf[1].header['TTYPE2'] == 'ENERG_HI' and \
f_arf[1].header['TTYPE3'] == 'SPECRESP':
res.append(fits_file)
logger.debug(f'{fits_file} is ARF file')
except:
pass
return res