SPACI score report for 2d4j in ASTRAL 1.75:

PDB Entry: 2d4j
SPACI score: 1
AEROSPACI score: 1

Experiment type: XRAY
Resolution: 1.16
R-factor: 0.098
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.156
WCK2 WHAT_CHECK Ramachandran: -1.134
WCK3 WHAT_CHECK Chi angles: -0.407
WCK4 WHAT_CHECK Backbone: 0.046

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).