SPACI score report for 1pf4 in ASTRAL 1.73:

PDB Entry: 1pf4
SPACI score: 0.06
AEROSPACI score: 0.06

Experiment type: XRAY
Resolution: 3.8
R-factor: 0.24
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -4.497
WCK2 WHAT_CHECK Ramachandran: -5.333
WCK3 WHAT_CHECK Chi angles: -3.954
WCK4 WHAT_CHECK Backbone: -17.256

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).