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Index

The index containing the title of all the observations in an input file is read when the file is opened. Starting with the use of CLASSIC , and to allow files with a larger number of observations or records, the version 2 of files uses 8-bytes integers wherever needed. In addition, with version 2, observations do not have to start at the beginning of a record, so no space is left blank in the file. Table 1 describes the content of an observation title.


Table 1: Version 2 of observation title.
Word Starting word Length type unit comment
bloc 1 2 INTEGER*8 [records] record number of entry start
word 3 1 INTEGER*4 [4-bytes] offset in words in record
ver 4 1 INTEGER*4   version of the observation
num 5 2 INTEGER*8   observation number
sourc 7 3 INTEGER*4(3)   source name
line 10 3 INTEGER*4(3)   tuning name
teles 13 3 INTEGER*4(3)   interferometer configuration
dobs 16 1 INTEGER*4 [days] classic date of observation
dred 17 1 INTEGER*4 [days] classic date of reduction
off1 18 1 REAL*4 [radian] lambda offset
off2 19 1 REAL*4 [radian] beta offset
typec 20 1 INTEGER*4   type of coordinates
kind 21 1 INTEGER*4   data kind
qual 22 1 INTEGER*4   data quality
scan 23 1 INTEGER*4   scan number
proc 24 1 INTEGER*4   procedure type
itype 25 1 INTEGER*4   observation type
houra 26 1 REAL*4 [radian] jour angle
project 27 2 INTEGER*4(2)   project name
bpc 29 1 INTEGER*4   baseline bandpass cal status
ic 30 1 INTEGER*4   instrumental cal status
recei 31 1 INTEGER*4   receiver band number
ut 32 1 REAL*4 [s] UT time



next up previous contents index
Next: Observations Up: Files Previous: Principle   Contents   Index
Gildas manager 2022-01-17