SPACI score report for 1nsn in ASTRAL 2.04:

PDB Entry: 1nsn
SPACI score: 0.22
AEROSPACI score: 0.22

Experiment type: XRAY
Resolution: 2.8
R-factor: 0.195
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.704
WCK2 WHAT_CHECK Ramachandran: -5.026
WCK3 WHAT_CHECK Chi angles: -5.397
WCK4 WHAT_CHECK Backbone: -2.997

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).