logging existing output file in dl1ab

[vuillaut]

No description provided.

[codecov]

Codecov Report

Merging #981 (9f0ad83) into master (857d483) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #981      +/-   ##
==========================================
- Coverage   85.69%   85.66%   -0.04%     
==========================================
  Files          78       78              
  Lines        6570     6570              
==========================================
- Hits         5630     5628       -2     
- Misses        940      942       +2     

Impacted Files	Coverage Δ
lstchain/reco/r0_to_dl1.py	93.03% <0.00%> (-0.64%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 857d483...9f0ad83. Read the comment docs.