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The observational data processing system FADPS for the 1-st observation cabin of RATAN-600

O. Verkhodanov

The reduction system of observations FADPS (description in Russian) (Flexible Astronomical Data Processing System) for data of wide-band receivers of the first observation cabin of the radio telescope RATAN-600 had been created under the Unix-like operational system DEMOS for computers of the SM-1420-type (PDP/11) in 1987 for observation analysis and estimates of coordinates and flux densities of radio sources. Those data had been obtained with the cross-section method with the North Sector of RATAN-600 ( Yu.N.Parijskij, N.N.Bursov, O.V.Verkhodanov, N.M.Lipovka, M.N. Naugolnaya, T.B.Pyatunina, N.S.Soboleva, A.V.Temirova. Radio sources of deep survey: a catalog of separate survey regions, accurate positions, fluxes, spectra, identifications, nature. The 19th All Union radio astronomical conference "Galactic and extragalactic radio astronomy", Reports' theses (in Russian), P.5, Tallin, 1987; N.N.Bursov, O.V.Verkhodanov, V.L.Erukhimov, N.M.Lipovka, T.B.Pyatunina, N.S.Soboleva, A.V.Temirova, V.N.Chernenkov. Determination of parameters of radio sources with the method of "declination cross-sections" under the unmovable secondary mirror at the RATAN-600. Izvestiya SAO USSR AS. Astrofiz. issl. (Bulletin of SAO, Russia), No 28, p.136-148, 1989), and also for simulation of observations and beam patterns of RATAN-600 ( O.V.Verkhodanov, V.B.Khajkin, 1990, Results of radio images and RATAN-600 parameters simulation in the comparison with the experiment. In Proc. (Reports' theses in Russian) of the 22nd All Union conference "Radio telescopes and interferometers", Erevan, P.169)

Now FADPS is a system for processing of one-dimensional vectors of observational data containing equidistant counts and for analysis of continual spectra of radio sources. FADPS contains graphic shells over programs fgr (description in Russian) (see also in Russian here) to visualize a process of operation of one-dimensional data vectors and spg to visualize a process of operation of non-equidistant measurements of continual spectra of radio sources (see also in Russian here) and independent packages for analysis of continuum radio spectra and microwave background radiation on the celestial sphere for the GLESP pixelization (see also in Russian here). Procedures for the servers CATS and SEDs had been created using FADPS libraries.

I should note that except FADPS there are some other processing systems at RATAN-600. They had been created by others observers specially for the their observational data. Among them, there are the program prad created by T.Sokolova and developed by S.A.Trushkin as the program pradT in the DOS and executed under OS Windows or under an emulator in Linux; a program for analysis of quasar variability in AstroSpace Center of Lebedev Physical Institute (Kovalev Yu.A., 1998. IKI/ASC at the RATAN-600 in 1979-1996: spectra monitoring and the nature of long-term variability of extragalactic radio sources. BSAO, No 44, 50); methods and programs of data reduction of the 1st observation cabin of Steinberg Institute of Moscow University (Gorshkov A.G., Khromov O.I., 1981, Bull. SAO, 1981, No 14, 15). Besides, there are data processing systems for spectroscopic observations at the 2-nd observation cabin of RATAN-600 and solar data from the 3-d observation cabin (Alferova Z.A., Gosachinskij I.V., Zhelenkov S.R., Morozov A.S., 1986, Bull. SAO, No 23, 89; Garaimov V.I., 1998, PhD thesis, Nizhnij Arkhyz, Special astrophysical observatory, respectively). Access and copyrights to use corresponding packages should be discussed with their authors personally.

In 2005 FADPS contained about 100 procedures, seven of which had been created with collegues (Shergin V.S., Monosov M.L., Erukhimov B.L., Chernenkov V.N. (SAO) and Doroshkevich A.G. (AstroSpace Center)). Other procedures had been created by Oleg V. Verkhodanov. Installation tar.gz-archive contains FADPS-library, codes of basic procedures for analysis of one-dimensional data vectors and continual spectra of radio sources, their descriptions in Russian, and an installation script. The total volume of code consists of about 300000 strings of the algorithmic language "C" and partly "shell", and description of programs contain about 70000 strings (more them 1000 pages of a printed text). All the software is free from the beginning of creation, and the package of data analysis on the celestial sphere GLESP been also free needs the additional registration.

FADPS consists of separate programs unified with a common system of astronomical data description (FITS-like format, in Russian) and with a standard system of input/output. To visualize data, the system contains graphic shells and programs, and, besides, allows one to format data according to the GNUPLOT-system input.

Among the FADPS basic utilities, one can mention procedures of harmonic analysis, non-linear smoothing, non-parametric average, simultaneous analysis of radio source spectra and coordinates in the problem of deblending radio source images, and others.

In FADPS, a user can create own data processing systems and packages. The command language of OS Unix and conveyor approach of information processing are applied to user design of packages in the multi-process system OS Unix.

The data processing system FADPS is continuously developed, e.g. old procedures are modified and new ones are created. The changes are reflected in the special file accessible with the command 'fnews' at a server with installed FADPS. The general description of the system is accessible with the command 'man fadps', and a list of procedures is accessible with the command 'litsf'.

If a user processes and analyzes data and obtains results with FADPS to be published in any paper, he/she should insert the corresponding reference: "The data processing system FADPS (Verkhodanov, 1997) of RATAN-600 has been used for data analysis (Verkhodanov O.V. 1997. Multiwaves continuum data reduction at RATAN-600. In "Astronomical Data Analysis Software and Systems VI", eds. G.Hunt & H.E.Payne. ASP Conference Series, Vol. 125, P.46-49.)"

FADPS bibliography

  1. O.V.Verkhodanov. The software for the instantaneous spectra of radio sources calculation at RATAN-600. In Proc. (Reports' theses in Russian) of the 23d All Union radio astronomical conference "Galactic and extragalactic radio astronomy". P.53, Ashkhabad, USSR, 1991.
  2. O.V.Verkhodanov, B.L.Yerukhimov, O.P.Zhelenkova, O.P.Likhvan, M.L.Monosov, V.N.Chernenkov, B.C.Shergin. F-format of data recording: library of C-functions for working with F-format, reformatting program, examples. Report of SAO USSR AS No 200. P.1-33, 1991. Library SAO.
  3. O.V.Verkhodanov. Library of the language C functions in the PLOT standard of operating system UNIX for work with graphics devices, based on the CGI library of the XENIX system. Additions to the PLOT standard. Procedures for the output of profiles and coordinate axes. The program plotting files recorded in the PLOT standard. Report of SAO USSR AS N 201. p.1-48. 1991. Library SAO.
  4. O.V.Verkhodanov. The software for the calculation of radio sources instantaneous spectra at the RATAN-600 radio telescope. Preprint SAO RAS N75 (Russian). p.1-102. 1992.
  5. O.V.Verkhodanov. Library BLANK in C language for the screen dialogue in the graphic mode of the terminal's operation in OS XENIX. Report of SAO USSR AS N 203. P.1-36. 1991. Library SAO.
  6. O.V.Verkhodanov, B.L.Erukhimov, M.L.Monosov, V.N.Chernenkov, V.S.Shergin. Commands of data processing system of the first observation cabin of RATAN-600 in XENIX system. Descriptions. Report of SAO RAS No 205. P.1-177. 1992. Library SAO.
  7. O.V.Verkhodanov, B.L.Erukhimov, M.L.Monosov, V.N.Chernenkov, V.S.Shergin. FADPS: flexible astronomical data processing system at RATAN-600 in UNIX environment. Preprint SAO RAS No 87. 1992. P.1-38.
  8. O.V.Verkhodanov, B.L.Erukhimov, M.L.Monosov, V.N.Chernenkov, V.S.Shergin. 1993. Basic principles of flexible astronomical data processing system in UNIX environment, Bull. SAO, No 36, p.132-137.
  9. Verkhodanov O.V. Programming in the X-window system of UNIX: library XPLOT. Report No 216. SAO RAS. P.1-45. 1993. Library SAO.
  10. Verkhodanov O.V., Cherepakhin A.P. Data base of plotters PLOTCAP and library of functions to operate with it. Report No 217. SAO RAS. P.1-13. 1993. Library SAO.
  11. Verkhodanov O.V. Programming on the PostScript language. Library PSCPLOT. Report No 232. SAO RAS. P.1-13. 1994. Library SAO.
  12. O.V.Verkhodanov, V.K.Kononov, E.K.Majorova, P.G.Tsibulyov. Creation of data recording format RATAN-FLEX. Report No 233. SAO RAS. P.1-17. 1994. Library SAO.
  13. Verkhodanov O.V. Interactive preliminary graphical data processing for one-dimensional vectors in X-window under OS UNIX at the RATAN-600. The program fgr - version 2.1. Preprint No 106 SAO RAS. P.1-57. Nizhnij Arkhyz. 1995.
  14. Verkhodanov O.V., Chernenkov V.N., Shergin V.S. Basic principles of flexible astronomical data processing system - II. Visualization. Preprint No 106 SAO RAS. P.58-65. Nizhnij Arkhyz. 1995.
  15. Verkhodanov O.V., Trushkin S.A. Active database of astrophysical catalogs at RATAN-600. Preprint No 106 SAO RAS. P.66-74. Nizhnij Arkhyz. 1995.
  16. Verkhodanov O.V., Chernenkov V.N., Kononov V.K., Trushkin S.A., Tsibulyov P.G. Description of format for recording multifrequency data from wide band recievers of the 1st observation cabin of RATAN-600. Report No 242. SAO RAS. P.1-30. 1995. Library SAO.
  17. Verkhodanov O.V. 1995. Interactive graphical data processing system of one-dimensional vectors in the net graphics shell X-window at RATAN-600. In Proc. (Reports' theses in Russian) of the 26th radio astronomical conference. St.Petersburg. IAA RAS. P.314-315.
  18. O.V.Verkhodanov, B.L.Erukhimov, M.L.Monosov, V.N.Chernenkov, V.S.Shergin. 1995. FADPS - flexible astronomical data processing system in OS UNIX. In Proc. (Reports' theses in Russian) of the 26th radio astronomical conference. St.Petersburg. IAA RAS. P.315-316.
  19. Verkhodanov O.V., Kononov V.K., Tsibulev P.G., Chernenkov V.N. The format of multifrequency continuum data recording at the RATAN-600 registration system output. In Proc. (Reports' theses in Russian) of the 26th radio astronomical conference. St.Petersburg. IAA RAS. P.316-317.
  20. O.V.Verkhodanov, V.K.Kononov, V.N.Chernenkov, 1995, The methods and facilities of astrophysical experiments support in the SAO RAS. Short review of the problems. Bulletin of SAO, No 39, P.146-149.
  21. Verkhodanov O.V. 1997. Multiwaves continuum data reduction at RATAN-600. In "Astronomical Data Analysis Software and Systems VI", eds. G.Hunt & H.E.Payne. ASP Conference Series, Vol. 125, P.46-49.
  22. Verkhodanov O.V. 1997. Interactive system of preparation and reduction of radio sources continuum spectra. In "Problems of modern radio astronomy" (in Russian). Proc. of the 27th Radio astronomical conf. St.-Petersburg. Institute of Applied Astronomy of RAS. V.1. P.322-323.
  23. Verkhodanov O.V., Kononov V.K., Trushkin S.A., Chernenkov V.N. 1997. Description system of galactic and extragalactic sources data. In "Problems of modern radio astronomy" (in Russian). Proc. of the 27th Radio astronomical conf. St.-Petersburg. Institute of Applied Astronomy of RAS. V.1. P.316-317.
  24. Verkhodanov O.V., Kononov V.K. 2002. A variant of description of dissimilar astronomical data. Bull. Spec. Astrophys. Obs., N 53, p.119-123.
  25. O.Verkhodanov, A.G.Doroshkevich, P.D.Naselsky, V.I.Turchaninov, I.D.Novikov, P.R.Cristensen. 2003. A new sky pixelization scheme for CMB map analysis. In Book of Abstracts, Danish Physical Society Annual Meeting 2003. Hotel Nyborg Strand, June 12-13. HCOe Tryk, Kobenhavn. AA30P.
  26. Verkhodanov O.V., Doroshkevich A.G., Naselsky P.D., Novikov D.I., Turchaninov V.I., Novikov I.D., Christensen P.R. 2004. New pixelization scheme for investigation of CMB maps. Proc. Sternberg Astron. Instit., V.LXXV. Abstr. of All Russian Astron. Conf. VAC-2004 "Horizons of Universe" (in Russian), MSU, ISSN 0371-6769. P.184.
  27. Verkhodanov O.V., Doroshkevich A.G., Naselsky P.D., Novikov D.I., Turchaninov V.I., Novikov I.D., Christensen P.R., L.-Y. Chiang, 2005. GLESP package for full sky CMB maps data analysis and its realization in the FADPS data processing system. Bull. SAO, No 58, 40-50
  28. Doroshkevich A.G., Naselsky P.D., Verkhodanov O.V., Novikov D.I., Turchaninov V.I., Novikov I.D., Christensen P.R., Chiang L.-Y. 2005. Gauss-Legendre Sky Pixelization (GLESP) for CMB maps. Internat. J. Modern Physics D, V.14, No 2, 275-290 (astro-ph/0305537)
vo @ sao.ru
 (Oleg Verkhodanov)