1. Data Processing Status
amdlib: library for data reduction
used during AMBER observations (amdlib 1.08):
optimization of windows on detector
Calibration of Spectral Displacement between interferometric pixels and photometry measurements
Calibration of the pixel-to-visibility matrix
Fringe sensing (looking for fringes)
Coherencing and atmospheric piston estimation
flux maximization in fibers
Used in ESO pipeline (amdlib 1.02) for quality control
Produces OI_FITS files
Used in “at home” data reduction (amdlib 1.17), often in conjunction with user-friendly ammYorick

2. Data Processing Status 2
cosmetics OK
Implements in C code algorithms devised by AMBER consortium:
Handle raw data
Load raw data
Save raw data
Handle calibration maps
Load bad pixel map
Load flat-field map
Calibrate raw data
Convert raw data to science data
Perform spectral calibration
Perform P2VM calibration
Compute P2VM
Save P2VM
Load P2VM
Extract visibilities
Create IO-FITS file
Products: Complex coherent fluxes, squared visibility, phase closures, differential phase, piston, spectra.

3. Visibilities OI-FITS File Calibrated Raw Data Science Data Raw Data
amdlibPHOTOMETRY
amdlibVIS
amdlibVIS2
amdlibVIS3
Visibilities
OI-FITS File
amdlibWriteOiFile()
amdlibRawData2ScienceData ()
amdlibRAW_DATA
Calibrated Raw Data
amdlibSCIENCE_DATA
Science Data
amdlibExtractVisibilities()
amdlibCalibrateRawData ()
Raw Data
amdlibLoadRawData()
amdlibLoadRawFrames()
Raw Image
amdlibGluedImage2RawData()
Raw Data File
amdlibComputePiston ()
amdlibPISTON
amdlibQUALITY_CONTROL
Pistons
amdlibLoadBadPixelMap()
amdlibBAD_PIXEL_MAP
Bad Pixel Map
amdlibP2VM_MATRIX
P2VM
amdlibFLAT_FIELD_MAP
Flat-Field Map
amdlibLoadP2vm()
P2VM File
amdlibPIXEL_BIAS_DATA
Pixel Bias
Flat-Field Map File
Bad Pixel Map File
amdlibLoadFlatFieldMap()
amdlibAMBER_WAVEDATA
Wavelength table
amdlibGeneratePixelBiasData()

4. Data Processing Status 3
Problems:
V2 estimate still has a “bug” in the C version.
Spectral calibration (NOT spectral matching of interferometry and photometry) is yet untractable in medium and high-resolution modes.
Spectra are uncalibrated in flux.

5. Data Processing Status 4
Still a long way to calibrated V2 after amdlib:
Take the numerous OI_FITS products (one per observation)
Eventually optimize measurement by frame selection (not done in amdlib yet)
Divide by calibrator
Etc…
 use, e.g. ammYorick
 Wait until VLT(I) vibrations have been damped
 Wait until all specialists agree on a definitive final complete ultimate unique data reduction method…

6. Data Processing Status 5
Plans:
Deliver a new, final AMBER consortium product in January 2006 to ESO:
standard interfaces frozen to enable further upgrades easily without bothering both OS and Pipe-Line processes
Simpler, more easily maintainable code
Done at LAOG by E. Altariba (CDD AMBER) and G. Zins (JMMC)
Future versions are needed only for the community (not for observation or data quality at ESO) and could be developed and maintained by JMMC (TBC)
These versions under CVS for everybody to participate and easy download and use.
ammYorick too!