PDS_VERSION_ID = PDS3 RECORD_TYPE = "STREAM" OBJECT = TEXT PUBLICATION_DATE = 2006-03-01 NOTE = "Description of the CALIB directory" END_OBJECT = TEXT END CALIB Directory Content The CALIB folder contains the various database information required to calibrate OSIRIS images. The information provided is stored in a format readable by the OSIRIS calibration pipeline software which may not always follow the PDS standard. All information is, however, either readable using either a text editor (ascii format) of a std PDS data file reader (PDS image data and PDS table data). The CALIB folder has the following structure: CALIB --|-- ABSCAL : Folder containing the DN/s to W/m2/sr/nm | for various optical filter combinations | |-- ADC : Folder containing the low/high adc | offset valid for the various amplifier | combinations | |-- BIAS : Folder containing the bias offsets for | the various operational modes of OSIRIS | |-- DISTORSION : Folder containing the optical | distorsion model parameters for the | cameras | |-- FILTERS : Folder containing the filter | transmission curves for the various | optical filters | |-- FLATFIELDS : Folder containing the flatfields for | the various filter combinations | |-- MIRRORS : Folder containing the mirror | reflectivity curves (for both single | mirror and for full optical path) | |-- QE : The CCD quantum efficiency | |-- SHUTTER : Folder containing calibration parameters for the two shutter mechanisms of the cameras ABSCAL: Contains files with the format <camera>_<model>_AbsCal_V<version>_<Creation Date>.txt The data files conatins <tag>=<value> lists with the format: abs<filter>_A contains the absolute calibration constant for <filter> [(DN/s) / (W/m2/nm/sr)] abs<filter_A_Err contains an error estimate for abs<filter>_A abs<filter>_T contains the average transmission coifficient for <filter> ADC: Contains the ADC offset added to the images by the readout electronics for various readout configuration The data files conatins <tag>=<value> lists with the format: adc_offset_a contains the ADC offset for amplifier chain A adc_offset_b contains the ADC offset for amplifier chain B adc_offset_ab contains the ADC offset for amplifier chain AB BIAS: Contains the BIAS offset added to the images by the readout electronics for various readout configuration The data files conatins <tag>=<value> lists with the format: <WIN Mode>_<Binning>_<amplifier>_SYNC<sync value> FILTERS: Contains filter transmission curves for the various optical filter that can be placed in the optical beam The folder contains files with the names: <camera>_<model>_<filter name>_V<version>_<creation date>.tab the first column contains the wavelength [nm] the second column contains the transmission [fraction] the third column contains the reflectivity of the filter surface FLATFIELDS: Contains the flatfields required to calibration OSIRIS images The folder contains files with the names: <camera>_<model>_<filter number>_V<version>_<creation date>.img The data files are stored in a data format that can be read with a PDS image reader MIRRORS: Contains the reflectivity curves for the mirrors of OSIRIS The folder contains files with the names: <camera>_<model>_MIRROR_V<version>_<creation date>.tab The data files are tabular text files with: the first colum containing the wavelength [nm] the second column containg the single mirror reflectance the third column containg the integrated mirror responce of the full optical system QE: Contains the quantom efficiency of the OSIRIS CCD's The folder contains files with the names: <camera>_<model>_QE_V<version>_<creation date>.img (std calibration file) or <camera>_<model>_QE-<temperature>_V<version>_<creation date>.img (temperature calibration file) The data files are tabular text files with: the first colum containing the wavelength [nm] the second column containg the QE of the CCD at wavelength the third column containg the reflectivity of the CCD at wavelength SHUTTER: Contains parameters describing the transfer function from shutter pulse index to CCD physical location. The folder contains files with the names: <camera>_<model>_SHM-B<blade>_V<version>_<creation date>.txt The shutter motion transfer function is described as: d = d0 + L(sin(th0) + sin(n*deg_per_stripe + thZ - th0)) where n is the pulse index and the other parameters are found in the calibration file as <tag>=<value> data
Apache/2.2.15 (Scientific Linux) Server at sbn.pds.nasa.gov Port 80Name Last modified Size Description
Parent Directory -
abscal/ 15-Dec-2016 09:59 -
adc/ 15-Dec-2016 09:59 -
bias/ 15-Dec-2016 09:59 -
distortion/ 15-Dec-2016 09:59 -
filters/ 15-Dec-2016 09:59 -
flatfields/ 15-Dec-2016 09:59 -
mirrors/ 15-Dec-2016 09:59 -
qe/ 15-Dec-2016 09:59 -
shutter/ 15-Dec-2016 09:59 -
calinfo.txt 14-Nov-2016 16:25 5.6K