The odds are that there's some dodgy data in your save file.
Can you start off with a simpler investigation of the save file data?
Print the MIN and MAX values? or
TV, bytscl(SDO_data_array), or
PLOT, SDO_data_array or
PLOT, histogram(SDO_data_array)
Or, put the data and code online somewhere for others to play with?
Being solar data in most unlikely to be at all relevant ;-)
Andrew