IRTS-FILM-155_Image_1.1 directory definition

 2016.01.25:  Kuriko Inada, Akira Yoshino, Keiichi Matsuzaki
 2021.09.07:  Tae Furusho
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* Preamble
------------
The data of IRTS (Infrared Telescope in Space) have been stored from 2001 to 2002 by DARTS (http://darts.isas.jaxa.jp). 
To simplify the data location, we reorganized them in 2016. 
Each new directory name was given like as "IRTS_[Product]", so that it shows obviously a product name.


* Version number assignment
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To identify the versions for the product (one set of data), the version numbers are assigned to each directory name like as "IRTS_[Product]_[version]". 
Based on the following information, we defined appropriately the numbers. 
   - Description of the header of the data file
   - Comment in the document for the data
   - Description of the release history in the web page:
     http://darts.isas.jaxa.jp/astro/irts/history.html
   - Result of inquiry to the data producer


* Change history
------------------
The IRTS-FILM-155_Image_1.1 directory has been made by DARTS.
We moved all the files related closely with the product into this directory as follows. 

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http://darts.isas.jaxa.jp/pub/irts/film/FILM_CH1_FITS/old/
		AAA_README
		N_SCAN/		
			ns??_filmc1_error.fits
			ns??_filmc1_flux.fits
			ns??_filmc1_no.fits
		S_SCAN/
			ss??_filmc1_error.fits
			ss??_filmc1_flux.fits
			ss??_filmc1_no.fits
		itpl/
			[ns|ss]??_filmc1_flag_intp.fits
			[ns|ss]??_filmc1_flux_intp.fits
		non-itpl/
			[ns|ss]??1_filmc1_error.fits
			[ns|ss]??_filmc1_flux.fits
			[ns|ss]??_filmc1_no.fits
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 |
 V
 V
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http://darts.isas.jaxa.jp/pub/irts/IRTS-FILM-155_Image_1.1/
                AAA_README
		README_byDARTS.txt (this file)
                N_SCAN/
                        ns??_filmc1_error.fits
                        ns??_filmc1_flux.fits
                        ns??_filmc1_no.fits
                S_SCAN/
                        ss??_filmc1_error.fits
                        ss??_filmc1_flux.fits
                        ss??_filmc1_no.fits
                itpl/
                        [ns|ss]??_filmc1_flag_intp.fits
                        [ns|ss]??_filmc1_flux_intp.fits
                non-itpl/
                        [ns|ss]??1_filmc1_error.fits
                        [ns|ss]??_filmc1_flux.fits
                        [ns|ss]??_filmc1_no.fits
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* Caveat (2021.9.7)
--------------------
For the South Scan region No.20 (ss20), the CRVAL2 value was fixed from "-1.0.5E+01" to "-1.05E+01".   
eof.