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

32 CHAPTER 4. STARING OBSERVATION (CAM01)
4. Remove unwanted SCDs with sscd clean.
CIA> cleaned_sscd = sscd_clean( sscd )
Out of 4 SCDs:
2 are rejected due to mode
0 is rejected due to csh flag
3 are rejected due to qla flag
In total 1 is accepted
We are left with only one SSCD and one corresponding SCD.
5. Now we must place the contents of the SSCD into a PDS. For a staring observation we
use a general PDS. This is created with get sscdstruct.
CIA> staring_pds = get_sscdstruct( cleaned_sscd )
You might be interested to see the data at this stage. x3d can be used to do this:
CIA> x3d, staring_pds
6. Now we can proceed with the calibration. We will perform the standard calibration steps
on the cube, i.e. staring pds.CUBE. In this observation the data does not need stabilization
correction – however feel free to experiment with this.
CIA> corr_dark, staring_pds
CIA> deglitch, staring_pds
Now we have a nicely calibrated PDS. You might want to check this with x3d. Use the
same calling sequence as above. This time you can click on the button mask to see which
pixel have been masked by the calibration routines.
7. Finally we make the single EXPOSURE from the cube
CIA> reduce, staring_pds
and perform flat field correction on the EXPOSURE
CIA> corr_flat, staring_pds
8. So to view the results of your calibration use xdisp or tviso to take a look at the single
EXPOSURE.
CIA> tviso, staring_pds.image
You should see the same image as in Figure 4.1.