ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

140 CHAPTER 14. IMAGE ANALYSIS AND DISPLAY
14.4.9 Raster visualization
This functionality only applies for a raster PDS (see Sections 15.5 and 15.5.4).
If Data mode is selected, a click on the button raster raises a “cube analysis” window. The
main image is a mosaic of several sky views which overlap. Each sky view (or SCD) contains
several readouts (usually from 10 to 30). This new window contains a plot of the history of all
the camera pixels that have contributed to the final flux of the pixel selected by the cursor in
the main image. This camera pixels will be called “useful” below. In the banner of the “cube
analysis” window, there are three scrolling menus.
• File
– New window: creates a new window which is a copy of the “cube analysis” window
and stays when you quit this widget for further comparison.
– Save: saves the “cube analysis” window as a PostScript or encapsulated PostScript
file.
– Quit: closes this “cube analysis” window and unselect the raster button.
• Plot
– Single: in the window there is only one graph. The whole time history of each “useful”
pixel camera is plotted. The part of the time history which contributes to the sky
pixel is bold, scd limits are drawn around this part, and the scd number is written at
the beginning of this part. All the plots are on the same graph (overplotting). This
can be useful when there is a gain variation.
– Multi: The whole time history of each “useful” pixel is drawn, each on a different
plot. The part of the time history which contributes to the sky pixel is bold, scd
limits are drawn around this part.
– Compare: for each “useful” pixel camera, only the part which contributes to the sky
pixel is drawn. The plots are put one after the other on the same graph, the abscissa
is not the real time.
• Options
– Bad Pixel interpolation (toggle button): pixels flagged as bad are interpolated by the
neighbour valid pixels or kept as it.
– Flat Correction (toggle button): during standard data reduction, only the fields
raster.image and raster.raster of the raster PDS structure are flat corrected
and not the whole cube (raster.cube field). This option corrects the cube for flatfielding
and makes easier the comparison of the flux histories.
– SCDs Limits (toggle button): this is valid only for the plot options Multi and Single
(in the compare mode, the SCD limits are always drawn).