Eliminate 1.#QNAN values from raster datasets

Code:

#Eliminate QNAN values based on band count
#Import modules
import arcpy, string, os, time
from arcpy import env
from arcpy.sa import *

#Checkout extensions
arcpy.CheckOutExtension("spatial")

#Define path to raster
raster = "E:/Rasters/Rasters/4_band/po_120780_4bands.tif"

#Define/set initial workspace/create workspaces
workspace = "C:/Delete" # set initial space
tempspace = workspace + os.sep + "tempspace"
finalspace = workspace + os.sep + "finalspace"

if not os.path.exists(tempspace):
    os.mkdir(tempspace)
if not os.path.exists(finalspace):
    os.mkdir(finalspace)

#Get bandcount
BndCnt = arcpy.GetRasterProperties_management(raster, "BANDCOUNT")

#create value table
vt = arcpy.ValueTable()

#describe raster /basename /composite name
desc_ras = arcpy.Describe(raster)
name = desc_ras.baseName
CompositeRas = finalspace + os.sep + name + ".tif"

# Band count
Xcnt = str(BndCnt)
print Xcnt
count = 1

#Loop based on band count and set each band to itself else set to 0
while count <= int(Xcnt):
   
    bnd = raster + "\Band_" + str(count)
    tempname = tempspace + os.sep + name +  "Band_" + str(count) + ".tif"
    ma = Con(Raster(bnd) == Raster(bnd), bnd, 0)
    ma.save(tempname)
    print ("completed map algebra on band: " + str(count))
    count = count + 1

arcpy.env.workspace = tempspace
rasterList = arcpy.ListRasters()

for rasters in rasterList:
    print rasters
    vt.addRow(rasters)
  
arcpy.CompositeBands_management(vt, CompositeRas)
print "completed composite"

del count, BndCnt, Xcnt, rasters, rasterList, bnd, ma, tempname, name, desc_ras, vt