Dirty images are scaled differently

[anawas]

Summary

Dirty images created from Rascil and OSKAR are scaled differently. Rascil output pixel values that are 10x higher. We need to investigate where this comes from.

How to reproduce

# To keep this demo small, we assume that the visibility is calculated elsewhere
# We need to set both parameters because Rascil needs measurement set
# Note: Visibility.read_from_file() doesn't work because it tries to read measurement set from
# random temp folder, which is empty at this time.
visibility = Visibility(vis_path="visibility.vis", ms_file_path="measurements.MS")

image_npixel = 4096
cellsize = 5e-6  # FOV / image_npixel

# Get OSKAR and Rascil imagers
oskar_imager = OskarDirtyImager(
    OskarDirtyImagerConfig(
        imaging_npixel=image_npixel,
        imaging_cellsize=cellsize,
        combine_across_frequencies=True,
    )
)

rascil_imager = RascilDirtyImager(
    RascilDirtyImagerConfig(
        imaging_npixel=image_npixel,
        imaging_cellsize=cellsize,
        combine_across_frequencies=True,
    )
)

# Calculate dirty images with the imagers
oskar_dirty_image = oskar_imager.create_dirty_image(vis)
oskar_dirty_image.plot(
    title="OSKAR dirty image",
    filename="oskar_dirty_image.png"
)

rascil_dirty_image = rascil_imager.create_dirty_image(vis.ms_file_path)
rascil_dirty_image.plot(
    title="Rascil dirty image",
    filename="rascil_dirty_image.png"
)

[sfiruch]

Can you add a minimal repro?