Fix to ZDC reproducibility problem
This MR is to fix the ZDC reproducibility problem (ATLASRECTS-7759), by setting default step sizes via the TF1 errors. It also recoups fits with bad chi2.
This MR is to fix the ZDC reproducibility problem (ATLASRECTS-7759), by setting default step sizes via the TF1 errors. It also recoups fits with bad chi2.