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  1. MPIfR Deki
  2. GMVA
  3. GMVA correlations
  4. 2017 Mar (c171)
  5. mb007

mb007

Modified 16:49, 22 Jan 2019 by alef | Page History

    MB007 Correlation Report

    General

    • Session info: http://www3.mpifr-bonn.mpg.de/div/vlbi/globalmm/
    • Station feedback: http://www3.mpifr-bonn.mpg.de/div/vlbi/globalmm/sessions/apr17/feedback_apr17.asc
    • ALMA QA2: 2016.1.00413.V used for polarization conversion (files are included in the data export folder)
    • This experiment has ALMA with 32x62.5MHz, VLBA with 2x128MHz channels, and most of the EVN with a 1x512MHz channel
    • Two EVN stations (Yebes, Pico Veleta) observed in an incorrect backend mode, with a 32 MHz polyphase filterbank.
    • Due to the issue at Yebes and Pico, three correlations were performed:
      • a) standard ALMA correlation setup (58 MHz bands)
      • b) narrower band correlation setup (32 MHz bands)
      • c) emulated standard ALMA correlation setup (58 MHz bands), accomplished via a mixed-bandwidth correlation with additional postprocessing of all baselines to Yebes and Pico Veleta to reconstruct 58 MHz bands
    • The details of correlation run (c) are: the experiment was correlated with 58 MHz bands and several narrower bands that fitted the Pico/Yebes recorded bands (e.g., 32 MHz, 24 MHz, 2 MHz and similar). After correlation the visibility data were ran through a post-processing script in order to form 58 MHz bands from the narrow bands (i.e., combining visibilities in frequency domain from e.g. 32 + 24 + 2 MHz bands). This step included spectrally averaging inside the 58 MHz bands from a total of 3712 channels per band down to the final 116 channels per band that matched the originally intended correlation mode.
    • The FITS files are delivered in two variants due to the problems with Pico and Yebes that were outlined above:
      • mb007.fits: Standard correlation (a)
      • mb007_merged.fits: Special correlation with post-processing (c)

    Status

    What Date
    Correlation 2nd round finished 19.8.2017
    Conversion to HOPS 4.9.2017
    Fourfit fringe fitting 4.9.2017
    Conversion to FITS with -u (union) option 4.9.2017
    PCList check 4.9.2017
    aedit plots, alist v6 residual rate and delay plots 4.9.2017
    rerun polconvert 10.11.2017
    Release to PI 14.11.2017
    re-processing of correlation (c) to fix Pico polarization and a difx2difx postprocessing error affecting autocorrelations 14.1.2018
    Re-release to PI 16.1.2018

    Fringe search:

    Station Code Fringes Plots Comments
    AA A yes    
    Gb G yes    
    Br b yes    
    Fd f yes    
    Kp k yes    
    La l yes    
    Mk m yes    
    Nl n yes    
    Ov o yes    
    Pt p yes    
    Ef B yes   Effelsberg DBBC2
    Eb E yes   Effelsberg RDBE
    Ys Y yes   fringes in 32 MHz correlation run, and in 58 MHz -emulated run
    Pv P yes   fringes in 32 MHz correlation run, and in 58 MHz -emulated run

    Fringes in e.g. scans No0023 and No0082 on ALMA baselines in 32 MHz correlation run (No0023 PDF all but GB and Mk in this scan; No0082 PDF with GB and Mk), likewise in 58 MHz correlation run (No0023 DF, No0082 PDF)

    Notes:

    1. In case (c) the additional processing consisted of, first, correlation with 58 MHz bands and several narrower bands that fitted the Pico/Yebes recorded bands (e.g., 32 MHz, 24 MHz, 2 MHz and similar), secondly, after correlation passing the visibility data through a post-processing script to form 58 MHz bands on the affected baselines using the narrow bands (i.e., combining visibilities in frequency domain from 32 + 24 + 2 MHz bands), thirdly, spectrally averaging inside the 58 MHz bands from 3712 channels per band to the final goal of 116 channels per band that matches the originally intended correlation mode.
    2. Yebes began recording 20 seconds late in every scan

    Post-Correlation checks

    Residuals

    reference G (GBT) pols RR and LL

     

    residuals_G.png

    reference Y (Yebes), pols RR and LL

    residuals_Y.png

    reference A (ALMA), pols RR and LL

    Note: Calibrator scans have stable delay and rate residuals scans have stable delay and rate residual. The large scatter happens on Sgr A only, and on long baselines (and not only with ALMA). This was verified in HOPS aedit.

    all sources incl. Sgr A* (below)

    residuals_A.png

    source 1921-293 only (below)

    residuals_A_1921-293.png

    FITS completeness (pclist)

    Legend:
    o:              station is included in the FITS-file (data is complete)
    x:              expected station is missing in the FITS-file
    number:         percentage of job time in the FITS-file compared to expected time.

                                     EF EB YS PV AA NL FD PT LA KP OV BR GB MK 
mb007_01 No0001 1749+096 3mm_ddc o  o  95 .  .  .  .  .  .  .  .  .  .  .  
mb007_02 No0002 1749+096 3mm_ddc o  o  o  .  .  .  .  .  .  .  .  .  .  .  
mb007_03 No0003  NRAO530 3mm_ddc o  o  88 o  .  .  .  .  .  .  .  .  .  .  
mb007_04 No0004     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_05 No0005  NRAO530 3mm_ddc o  o  88 o  .  .  .  .  .  .  .  .  .  .  
mb007_06 No0006     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_07 No0007     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_08 No0008  NRAO530 3mm_ddc o  o  88 o  .  .  .  .  .  .  .  .  .  .  
mb007_09 No0009     SGRA 3mm_ddc o  o  o  o  .  .  .  .  .  .  .  .  .  .  
mb007_10 No0010     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_11 No0011  NRAO530 3mm_ddc o  o  o  o  .  .  .  .  .  .  .  .  .  .  
mb007_12 No0012     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_13 No0013     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_14 No0014  NRAO530 3mm_ddc o  o  88 o  .  .  .  .  .  .  .  .  .  .  
mb007_15 No0015     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_16 No0016     SGRA 3mm_ddc o  o  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_17 No0017  NRAO530 3mm_ddc o  o  88 o  .  .  .  .  .  .  .  .  .  .  
mb007_18 No0018     SGRA 3mm_ddc .  .  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_19 No0019     SGRA 3mm_ddc .  .  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_20 No0020  NRAO530 3mm_ddc o  o  o  o  .  .  .  .  .  .  .  .  .  .  
mb007_21 No0021     SGRA 3mm_ddc .  .  96 o  .  .  .  .  .  .  .  .  .  .  
mb007_22 No0022     SGRA 3mm_ddc .  .  o  o  .  .  .  .  .  .  .  .  .  .  
mb007_23 No0023 1749+096 3mm_ddc o  o  o  o  o  o  o  o  o  o  o  o  .  .  
         No0024 1749+096 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_24 No0025 1749+096 3mm_ddc o  o  93 o  o  o  o  o  o  o  o  o  o  .  
         No0026  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_25 No0027  NRAO530 3mm_ddc o  o  o  o  o  o  o  o  o  o  o  .  o  .  
mb007_26 No0028     SGRA 3mm_ddc .  .  o  o  o  o  o  .  o  .  .  .  o  .  
mb007_27 No0029     SGRA 3mm_ddc .  .  o  o  o  o  o  o  o  o  .  .  o  .  
mb007_28 No0030  NRAO530 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  .  
         No0031  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_29 No0032  NRAO530 3mm_ddc .  .  o  o  o  o  o  o  o  o  o  o  o  .  
mb007_30 No0033     SGRA 3mm_ddc .  .  .  o  o  o  o  o  o  o  .  .  o  .  
mb007_31 No0034     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  .  .  o  .  
mb007_32 No0035  NRAO530 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  .  
         No0036  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_33 No0037  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  .  
mb007_34 No0038     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  .  o  .  
mb007_35 No0039     SGRA 3mm_ddc .  .  .  .  80 80 80 80 80 80 80 .  80 .  
mb007_36 No0040  NRAO530 3mm_ddc .  .  .  .  .  13 13 13 13 13 13 13 .  .  
         No0041  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_37 No0042  NRAO530 3mm_ddc .  .  .  .  11 11 11 11 11 11 11 11 11 .  
mb007_38 No0043     SGRA 3mm_ddc .  .  .  .  09 09 09 09 09 09 09 .  09 .  
mb007_39 No0044     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  .  o  .  
mb007_40 No0045  NRAO530 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  .  
         No0046  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_41 No0047  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  .  
mb007_42 No0048     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  .  
mb007_43 No0049     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  .  
mb007_44 No0050  NRAO530 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0051  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_45 No0052  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_46 No0053     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  .  
mb007_47 No0054     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  .  
mb007_48 No0055     SGRA 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0056  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_49 No0057  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_50 No0058     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_51 No0059     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_52 No0060     SGRA 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0061  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_53 No0062  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_54 No0063     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_55 No0064     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_56 No0065     SGRA 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0066  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_57 No0067  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_58 No0068     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_59 No0069     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_60 No0070     SGRA 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0071 1921-293 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_61 No0072 1921-293 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_62 No0073     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_63 No0074     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_64 No0075 1921-293 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0076  NRAO530 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_65 No0077  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_66 No0078     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_67 No0079     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_68 No0080 1921-293 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
         No0081 1921-293 3mm_ddc .  .  .  .  .  .  .  .  .  .  .  .  x  .  
mb007_69 No0082 1921-293 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  o  o  
mb007_70 No0083     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_71 No0084     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_72 No0085  NRAO530 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_73 No0086     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_74 No0087     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_75 No0088 1921-293 3mm_ddc .  .  .  .  x  o  o  o  o  o  o  o  .  o  
mb007_76 No0089     SGRA 3mm_ddc .  .  .  .  x  o  o  o  o  o  o  o  .  o  
mb007_77 No0090     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_78 No0091  NRAO530 3mm_ddc .  .  .  .  .  o  o  o  o  o  o  o  .  o  
mb007_79 No0092     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_80 No0093     SGRA 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_81 No0094 1921-293 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_82 No0095     SGRA 3mm_ddc .  .  .  .  .  .  o  o  o  o  o  o  .  o  
mb007_83 No0096 1921-293 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_84 No0097 1921-293 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o  
mb007_85 No0098 1921-293 3mm_ddc .  .  .  .  o  o  o  o  o  o  o  o  .  o
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