As part of the Service Mode package, QC1 reports about SCIENCE reduction are delivered. These consist of one main report for each detector and of one report for each fibre.

All plots come in gif format (for quick-look purpose) and in compressed postscript format (for printouts).

• top panel
• plot 1: central row and column (raw data)
• plot 2: cross-dispersion profile
• plot 3: average intensities
• plot 4: histogram (raw frame)
• plot 5: extracted spectra
• bottom panel

Complete sample plot

Top panel. The name of the raw frame, the name of the reduced spectrum, and the setting values are indicated. Possible settings are:

• WLEN 5200.0; 6FIB, Plate 1
• WLEN 5200.0; 6FIB, Plate 2
• WLEN 5800.0; 8FIB, Plate 1
• WLEN 5800.0; 8FIB, Plate 2
• WLEN 5800.0; 7+1FIB, Plate 1 (for SimCal observations)
• WLEN 5800.0; 7+1FIB, Plate 2 (for SimCal observations)
• WLEN 8600.0; 8FIB, Plate 1
• WLEN 8600.0; 8FIB, Plate 2

1. Central row and central column (raw data). This plot gives an indication about some sorts of irregularities and about the flux level.

2. Cross-dispersion profile (on a logarithmic flux scale). It has been derived by collapsing all columns in a subwindow 100x100 pixels wide (with an approximate correction for inclination of orders).

3. Mean intensities of extracted spectra. Average intensities of the extracted spectra for each fibre. This gives, together with plot 2, an indication whether the flux has been correctly extracted.

4. Histogram (raw frame). A histogram for the raw data is shown around the background (100...400 ADU; log frequency). The BIAS level is marked by the red line. Any shift of the maximum away from the BIAS level would indicate contributions from dark current or sky background.

5. Extracted spectra. The full spectra for all fibre are shown here, rebinned to 1A resolution. The extracted flux is divided by the not normalised flat field and corrected for different throughputs of the fibres.

Bottom panel. The bottom panel shows some relevant observational parameters (exposure time, airmass, seeing, bin width, start wavelength) and the mean values of the raw frame.

Detailed spectral plots for each fibre (and each detector) are added to the main report. They have the following components:

• top panel
• plot 1: three spectral windows
• plot 2: reduced spectrum, errorbars, compressed view
• plot 3: histogram (reduced spectrum)
• bottom panel

Complete sample plot

Top panel. The name of the raw frame, the name of the reduced spectrum, and the setting values are indicated.

1. Three spectral windows. They are marked in plot 2 by the red broken lines and numbered as a-c.

2. Reduced spectrum, errors. The full spectrum is shown here, with a 5A smoothed version in red. A compressed version is also shown, to provide a quick look of potential ripple patterns. Nominal positions of some prominent spectral lines are marked blue. The orders are indicated in green.

A plot with errorbars has been added in April 2003.

3. Histogram (reduced spectrum). A histogram of the reduced spectrum.

Bottom panel. The bottom panel shows some relevant observational parameters (exposure time, airmass, seeing), bin width and start wavelength of the spectrum, and mean and maximum values of the reduced spectrum.