Quality Control plots and tests for SOFI

Phase 3 submission of imaging products for SSDR1 (20140403)

Plots to check for quality control of photometric header keywords. Plots should be for JHK in different colours

1. MJD-OBS vs PHOTZP 

2. TEXPTIME vs PHOTZP 

3. FWHM vs ABMAGLIM

4. TEXPTIME vs ABMAGLIM

5. FWHM vs ABMAGSAT

6. TEXPTIME vs ABMAGSAT