next up previous contents
Next: Timing Analysis Up: Spectral Analysis Previous: ii_spectra_extract   Contents


ip_spectra_extract

ip_spectra_extract reads the shadowgram for each input energy band and the name and coordinates of the source for which a spectrum will be extracted. Since PICsIT operates in an energy range with a few sources, this executable works for one source only.

For each output energy band, it:

-
creates a model (PIF) for the source. The Pixel Illumination Factor (PIF) is a number between 0 and 1, which expresses the theoretical degree of illumination of each pixel in the detector plane of a coded-mask instrument. The PIF is calculated on the basis of the position and is normalized to 1 cts/pix source. The present PIF is purely geometrical.

-
by taking into account that there is one single source with ideal PIF, than the Equation at pag. L228 of Goldwurm et al. (2003) can be simplified. In this case, all the pixel counts, depending on the PIF values, are due to the selected single source. That is, deviations from the average counts in the observed shadowgrams are due entirely to the source.

-
writes the source count rates in the selected energy bands and the PIF.

Table 24: ip_spectra_extract parameters included into the main script.
     
Name Name Type Description
(in the main script) (executable)    
PICSIT_source_name inName string Name of the source for extracting PICsIT spectrum

default: `` ''

PICSIT_source_RA inRA real RA of the source for extracting PICsIT spectrum

default: `` ''

PICSIT_source_DEC inDEC real DEC of the source for extracting PICsIT spectrum

default: `` ''

PICSIT_source_inOG inOG string DOL of the input Observation group

default: `` ''

PICSIT_source_Shadow inShadow string DOL of the input Shadowgrams

default: `` ''

PICSIT_source_mask maskG string DOL of the IBIS mask model

default: `` ''

PICSIT_source_outOG outOG string DOL of the output Observation group

default: `` ''

PICSIT_source_outPIF outpif string DOL of the PIF index

default: `` ''

PICSIT_source_outSpec outSpec string DOL of the output spectra

default: `` ''


next up previous contents
Next: Timing Analysis Up: Spectral Analysis Previous: ii_spectra_extract   Contents
inthelp@sciops.esa.int