SPACI score report for 1c5f in ASTRAL 2.06:

PDB Entry: 1c5f
SPACI score: 0.34
AEROSPACI score: 0.34

Experiment type: XRAY
Resolution: 2.47
R-factor: 0.201
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.017
WCK2 WHAT_CHECK Ramachandran: -2.874
WCK3 WHAT_CHECK Chi angles: -0.569
WCK4 WHAT_CHECK Backbone: 0.61

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).