https://spdf.gsfc.nasa.gov/pub/data/ibex/hi/maps/images/release_2/map1/ibex_hi_maps_images_release2_map1_readme.txt

This directory holds Release 2, Epoch 1 (12/2008-06/2009),
spacecraft-frame ENA flux maps and related files, in PNG 
format for viewing, for five IBEX-Hi energy bins (0.52-0.95, 
0.84-1.55, 1.36-2.50, 1.99-3.75, 3.13-6.00 keV)

For each energy bin, there are three PNG files:

  - the "fexp" file gives net exposure time per bin
  - the "flux" file gives the ENA flux per bin
  - the "numb" file gives the number of samples per bin

The images show color-coded intensities of the relevant
parameter in 6 deg x 6 deg bins in J2000 ecliptic coordinates.

Txt-formatted digital versions of the image data are available at
https://spdf.gsfc.nasa.gov/pub/data/ibex/hi/maps/digital_data/release_2/map1/

See 
http://ibex.swri.edu/ibexpublicdata/Data_Release_2/Other/Data_Release_2_desc.txt 
for further detail.