1. NCC EDR Status May 03, 2012 Stephanie Weiss, Steve Mills, Calvin Liang
NGAS A&DP

2. Image provided by Tom Kopp
NCC Sample of 4 Granules
ND_ _NCC_NorthAmerica_d _t0826to0830 
Hyperbolic shaped anomaly
Image provided by Tom Kopp

3. NCC Sample ADL reprocessed with min irrad = 0
Hyperbolic shaped anomaly eliminated
S. Weiss NGAS

4. Conclusion
Min irradiance change to 0 eliminates hyperbolic shaped anomaly in original NCC EDR
  The triangular area is still missing, and was not fixed by this change
change appears to be due to some flaw in logic at the granule level
where there is a mix of Solar Zenith Angle (SlZA) both  > 105 deg and < 105 deg it does not compute for those pixels > 105 deg SlZA ,  even there is sufficient  lunar radiance to produce an NCC image.   
However, if the entire granule is > 105 deg SlZA, and there is sufficient lunar illumination, it works fine. 
Is there a shortcut here applying granule level logic to bypass some pixel level tests?