SPACI score report for 1n5l in ASTRAL 2.05:

PDB Entry: 1n5l
SPACI score: 0.35
AEROSPACI score: 0.35

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.236
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.812
WCK2 WHAT_CHECK Ramachandran: -0.272
WCK3 WHAT_CHECK Chi angles: -0.08
WCK4 WHAT_CHECK Backbone: 0.944

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).