Flipped Tracks

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Tracks from pandora are commonly flipped; meaning that start point is assigned the end point and vise-versa. This is ostensibly viewed by looking at the true vs. reco costheta direction. This was observed for kaons (docdb 34967) and muons (docdb 41650).

Checklist

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Expected Behavior

Costheta 2d histogram should be diagonal, no flipping between +- costeta value.

Current Behavior

Off-diagonal indicative of flipped tracks.

Possible Solution (optional)

Incorperate better charge information or delta direction information into track direction reconstruction.