class Continuum and Line Analysis Single-dish Software - IRAM

More documents

Recommendations

Info

32 CHAPTER 4. DEVELOPER MANUAL (04-DEC-2006) 4 the index entry of the observation 4*nsec the codes of the sections 4*nsec the addresses of the sections 4*nsec the lengths of the sections Thus the first section will e.g. be stored at the address (28+12*nsec), followed by the second section, and so on up to the end of the observation. The length of one particular type of section is not fixed. Adding extra parameters is then possible in each section. 4.1.2 File organization Data is stored in a direct access file. The record length is 512 bytes. Blocks may contain either ovservations or indexing information. Each observation begins on a logical block limit. The first block of the file contains a file description in the following format: length content (bytes) 4 file identification code 4 next block available for writing on the file. 4 number of index entries per index extension. 4 nex: number of index extensions (max. 251) 4*nex first block number of each index extension The list of index extension block numbers extends onto the second block of the file. The file identification code is a 4 character code used to indicate the file type (single versus multiple) and the internal storage format of the machine which has written the data. Table 4.1 summarizes the possible codes. This enables the reading machine to convert the data to its internal format. Vax IEEE EEEI MULTIPLE ’1 ’ ’1A ’ ’1B ’ SINGLE ’9 ’ ’9A ’ ’9B ’ Table 4.1: class file identification codes depending on the file type. Each file contains its own index. Each index entry has a length of 32 words. Thus 4 index entries fill a 512-byte block. Several (by default 64) index entries are grouped in an index extension, of by default 16 consecutive blocks. The addresses of the first block of each extension are stored in the first block. During writing, observations are written at the end of the file, and indexed in the current index extension. When the latter is full, a new index extension is created at the end of the file. The contents of each index entry may depend on the application. for class spectral line and continuum observations, it contains the following: name length content (words) XBLOC 1 observation block number XNUM 1 observation sequence number XVER 1 observation version number XSOURC 3 source name (12 char)
4.2. THE HEADER AND DATA SECTIONS 33 XLINE 3 telescope name (12 char) XDOBS 1 observation date XDRED 1 reduction date XOFF1 1 first offset (real, radians) XOFF2 1 second offset (real, radians) XTYPE 1 coordinate system (’EQ”, ’GA’, ’HO’) XKIND 1 Kind of observation (0: spectral, 1: continuum, ) XQUAL 1 Quality (0-9) XSCAN 1 Scan number XPOSA 1 Position Angle XFRONT 2 (8 char) Front-end ID (PROPOSED) XBACK 2 (8 char) Back-end ID (PROPOSED) XPROC 2 (8 char) Procedure ID (PROPOSED) XPROJ 2 (8 char) Project ID (PROPOSED) (unused) 6 for future extensions 4.2 The Header and Data Sections Here we describe the contents of the main header sections (excerpts from the storage declarations in the class program itself). Note that, in the data file, the actual length of some of the sections is variable, e.g. the length of the switching information section depends on the number of different phases in the switching procedure. 4.2.1 General Parameters ! Section -2 /CRPAR/ ! GENERAL: General parameters, always present. integer mgen integer mgen2 parameter (mgen=9,mgen2=12) type general sequence integer(kind=4) :: num ! [ ] Observation number integer(kind=4) :: ver ! [ ] Version number integer(kind=4) :: teles(3)! [ ] Telescope name integer(kind=4) :: dobs ! [MJD-60549] Date of observation integer(kind=4) :: dred ! [MJD-60549] Date of reduction integer(kind=4) :: typec ! [ code] Type of coordinates integer(kind=4) :: kind ! [ code] Type of data integer(kind=4) :: qual ! [ code] Quality of data integer(kind=4) :: scan ! [ ] Scan number integer(kind=4) :: subscan ! [ ] Subscan number ! real(kind=8) :: ut ! [ rad] UT of observation real(kind=8) :: st ! [ rad] LST of observation real(kind=4) :: az ! [ rad] Azimuth real(kind=4) :: el ! [ rad] Elevation real(kind=4) :: tau ! [neper] Opacity
Page 1: class Continuum and Line Analysis S
Page 4 and 5: iv CONTENTS 3.4 Communication with
Page 6 and 7: vi CONTENTS 5.2.21 STAMP . . . . .
Page 8 and 9: 2 CHAPTER 1. INTRODUCTION
Page 10 and 11: 4 CHAPTER 2. COOKBOOK 30 swap 31 wr
Page 12 and 13: 6 CHAPTER 2. COOKBOOK A4: the multi
Page 14 and 15: 8 CHAPTER 2. COOKBOOK Figure 2.1: R
Page 16 and 17: 10 CHAPTER 2. COOKBOOK 15. Delete o
Page 18 and 19: 12 CHAPTER 2. COOKBOOK
Page 20 and 21: 14 CHAPTER 3. USER MANUEL 3.1.3 Sca
Page 22 and 23: 16 CHAPTER 3. USER MANUEL 3.1.7 Var
Page 24 and 25: 18 CHAPTER 3. USER MANUEL • SET M
Page 26 and 27: 20 CHAPTER 3. USER MANUEL When work
Page 28 and 29: 22 CHAPTER 3. USER MANUEL • METHO
Page 30 and 31: 24 CHAPTER 3. USER MANUEL when only
Page 32 and 33: 26 CHAPTER 3. USER MANUEL • LINES
Page 34 and 35: 28 CHAPTER 3. USER MANUEL • SET T
Page 36 and 37: 30 CHAPTER 3. USER MANUEL 2. OR The
Page 40 and 41: 34 CHAPTER 4. DEVELOPER MANUAL (04-
Page 60 and 61: 54 CHAPTER 5. INTERNAL HELPS SPECTR
Page 62 and 63: 56 CHAPTER 5. INTERNAL HELPS ALIGN
Page 64 and 65: 58 CHAPTER 5. INTERNAL HELPS Plot a
Page 66 and 67: 60 CHAPTER 5. INTERNAL HELPS lower
Page 68 and 69: 62 CHAPTER 5. INTERNAL HELPS TOR\FI
Page 70 and 71: 64 CHAPTER 5. INTERNAL HELPS N Numb
Page 72 and 73: 66 CHAPTER 5. INTERNAL HELPS MODIFY
Page 74 and 75: 68 CHAPTER 5. INTERNAL HELPS If the
Page 76 and 77: 70 CHAPTER 5. INTERNAL HELPS PLOT /
Page 78 and 79: 72 CHAPTER 5. INTERNAL HELPS SET CA
Page 80 and 81: 74 CHAPTER 5. INTERNAL HELPS - SET
Page 82 and 83: 76 CHAPTER 5. INTERNAL HELPS ii) li
Page 84 and 85: 78 CHAPTER 5. INTERNAL HELPS SET SE
Page 86 and 87: 80 CHAPTER 5. INTERNAL HELPS Specif
Page 88 and 89:
82 CHAPTER 5. INTERNAL HELPS PARAME
Page 90 and 91:
84 CHAPTER 5. INTERNAL HELPS DRIFT
Page 92 and 93:
86 CHAPTER 5. INTERNAL HELPS SET WI
Page 94 and 95:
88 CHAPTER 5. INTERNAL HELPS Writes
Page 96 and 97:
90 CHAPTER 5. INTERNAL HELPS double
Page 98 and 99:
92 CHAPTER 5. INTERNAL HELPS units,
Page 100 and 101:
94 CHAPTER 5. INTERNAL HELPS 5.2.9
Page 102 and 103:
96 CHAPTER 5. INTERNAL HELPS MAP /N
Page 104 and 105:
98 CHAPTER 5. INTERNAL HELPS POP wi
Page 106 and 107:
100 CHAPTER 5. INTERNAL HELPS Xval
Page 108 and 109:
102 CHAPTER 5. INTERNAL HELPS speci
Page 110 and 111:
104 CHAPTER 5. INTERNAL HELPS siste
Page 112 and 113:
106 CHAPTER 5. INTERNAL HELPS GAUSS
Page 114 and 115:
108 CHAPTER 5. INTERNAL HELPS CONTI
Page 116 and 117:
110 CHAPTER 5. INTERNAL HELPS MAP%R
Page 118 and 119:
112 CHAPTER 5. INTERNAL HELPS 5.6.3
Page 120 and 121:
114CHAPTER 6. ERROR MESSAGES AND RE
Page 122 and 123:
Page 124 and 125:
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
138 INDEX MODIFY, 65 BANDS, 66 BEAM
show all

class Continuum and Line Analysis Single-dish Software - IRAM

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?