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IX/1    Wisconsin soft X-ray diffuse background all-sky Survey (McCammon+ 1983)

Wisconsin Soft X-Ray Diffuse Background All-Sky Survey McCammon D., Burrows D.N., Sanders W.T., Kraushaar W.L. <Astrophys. J. 269, 107 (1983)> =1983ApJ...269..107M =1997yCat.9001....0M
ADC_Keywords: Surveys ; X-ray sources Description: The catalog contains all-sky survey of the soft X-ray diffuse background and the count-rate data from which the maps were made for the ten flights included in the survey. It contains 40 files in the machine-readable version and includes documentation and utility subroutines. The data files contain different band maps (B, C, M, M1, M2, I, J, 2-6 keV) in a 0 degree-centered Aitoff projection, in a 180-degree-centered Aitoff projection, in a north polar projection, and in a south polar projection. Lookup tables in the form of FITS images are provided for conversion between pixel coordinates and Galactic coordinates for the various projections. The bands are: B = 130-188eV C = 160-284eV M1 = 440-930eV M2 = 600-1100eV I = 770-1500eV J = 1100-2200eV 2-6keV = 1800-6300eV File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file doc_gen.txt 80 296 General documentation for the survey doc_rate.txt 80 186 Documentation for the countrate files (p*.dat) programs.f 80 547 FORTRAN subroutines for accessing the original data files a0b.fit 2880 48 Aitoff 0°-centered, B(130-188eV) band a0b_mask.fit 2880 48 Aitoff 0°-centered, B(130-188eV) band (with contaminated regions defined by the subroutine REMOVE in programs.doc zeroed) a0c.fit 2880 48 Aitoff 0°-centered C(160-284eV)-band a0c_mask.fit 2880 48 Aitoff 0°-centered C(160-284eV)-band (with contaminated regions defined by the subroutine REMOVE in programs.doc zeroed) a0m.fit 2880 48 Aitoff 0°-centered M(440-1100eV)-band a0m1.fit 2880 48 Aitoff 0°-centered M1(440-930eV)-band a0m2.fit 2880 48 Aitoff 0°-centered M2(600-1100eV)-band a0i.fit 2880 48 Aitoff 0°-centered I(770-1500eV)-band a0j.fit 2880 48 Aitoff 0°-centered J(1100-2200eV)-band a026.fit 2880 48 Aitoff 0°-centered 1.8-6.3keV band a180b.fit 2880 48 Aitoff 180°-centered B(130-188eV) band a180c.fit 2880 48 Aitoff 180°-centered C(160-284eV)-band a180m.fit 2880 48 Aitoff 180°-centered M(440-1100eV)-band a180m1.fit 2880 48 Aitoff 180°-centered M1(440-930eV)-band a180m2.fit 2880 48 Aitoff 180°-centered M2(600-1100eV)-band a180i.fit 2880 48 Aitoff 180°-centered I(770-1500eV)-band galxy0.fit 2880 48 Aitoff 0°-centered mapping of (l,b) to pixels galxy180.fit 2880 48 Aitoff 180°-centered mapping of (l,b) to pixels xygal0.fit 2880 48 Aitoff 0°-centered mapping of pixels to (l,b) xygal180.fit 2880 48 Aitoff 180°-centered mapping of pixels to (l,b) npb.fit 2880 25 North Polar B(130-188eV) band npc.fit 2880 25 North Polar C(160-284eV)-band npm.fit 2880 25 North Polar M(440-1100eV)-band npm1.fit 2880 25 North Polar M1(440-930eV)-band npm2.fit 2880 25 North Polar M2(600-1100eV)-band npi.fit 2880 25 North Polar I(770-1500eV)-band spb.fit 2880 25 South Polar B(130-188eV) band spc.fit 2880 25 South Polar C(160-284eV)-band spm.fit 2880 25 South Polar M(440-1100eV)-band spm1.fit 2880 25 South Polar M1(440-930eV)-band spm2.fit 2880 25 South Polar M2(600-1100eV)-band spi.fit 2880 25 South Polar I(770-1500eV)-band galxy_np.fit 2880 25 Zenithal Equal Area mapping of (l,b) to pixels for North Polar projection galxy_sp.fit 2880 25 Zenithal Equal Area mapping of (l,b) to pixels for South Polar projection xygal_np.fit 2880 25 Zenithal Equal Area mapping of pixels to (l,b) for North Polar projection xygal_sp.fit 2880 25 Zenithal Equal Area mapping of pixels to (l,b) for South Polar projection effaprod.dat 80 560 Effective Area Product as a function of energy for the different X-ray bands p13049.dat 400 1176 Observations from flight 13.049 (PASS3) p13083.dat 400 1186 Observations from flight 13.083 (PASS3) p13084.dat 400 1356 Observations from flight 13.084 (PASS3) p13102.dat 400 1211 Observations from flight 13.102 (PASS3) p13103.dat 400 1026 Observations from flight 13.103 (PASS3) p13122.dat 400 1296 Observations from flight 13.122 (PASS3) p13137.dat 400 1326 Observations from flight 13.137 (PASS3) p25045.dat 400 1401 Observations from flight 25.045 (PASS3) p25051.dat 400 1451 Observations from flight 25.051 (PASS3) p26061.dat 400 1245 Observations from flight 26.061 (PASS3) maps.dat 83 36 Summary of FITS maps
Byte-by-byte Description of file: effaprod.dat
Bytes Format Units Label Explanations
2- 10 E9.4 keV E [0.0025/10.6] Photon energy 12- 20 E9.4 cm2.sr Area.B Effective area in the B(130-188eV) band 22- 30 E9.4 cm2.sr Area.C Effective area in the C(160-284eV)-band 32- 40 E9.4 cm2.sr Area.M1 Effective area in the M1(440-930eV)-band 42- 50 E9.4 cm2.sr Area.M2 Effective area in the M2(600-1100eV)-band 52- 60 E9.4 cm2.sr Area.I Effective area in the I(770-1500eV)-band 62- 70 E9.4 cm2.sr Area.J Effective area in the J(1100-2200eV)-band 72- 80 E9.4 cm2.sr Area.26 Effective area in the 1.8-6.3keV band
Byte-by-byte Description of file: p*.dat
Bytes Format Units Label Explanations
5- 10 F6.3 --- Flight Flight number 19- 20 I2 min time.m Minutes past the hour for the center of the 0.2s observation 26- 30 F5.2 s time.s Seconds past the minute for the center of the 0.2s observation 35- 40 A6 --- Flag [0-7] Octal flag word (1) 41- 50 E10.4 deg GLON [0/360] Galactic longitude 51- 60 E10.4 deg GLAT [-90/90] Galactic latitude 61- 70 E10.4 deg RAdeg Right Ascension (B1950) 71- 80 E10.4 deg DEdeg Declination (B1950) 81- 90 E10.4 deg Az [0/360] Azimuth angle 91-100 E10.4 deg Ze [0/180] Zenith angle 101-110 E10.4 km Alt [95/220] Rocket altitude 111-120 E10.4 cm-2 Ncol Column density of nitrogen atoms (2) 121-130 E10.4 cm-2 Ocol Column density of oxygen atoms (2) 131-140 E10.4 cm-2 Arcol Column density of argon atoms (3) 141-150 E10.4 deg Az.B [0/360] Azimuth angle, relative to the Earth's magnetic field 151-160 E10.4 deg Ze.B [0/180] Zenith angle, relative to the Earth's magnetic field 161-170 E10.4 ct/s Brate ?=-99 Count rate in band B(130-188eV) 171-180 E10.4 ct/s e_Brate ?=-99 1-σ uncertainty for Brate 181-190 E10.4 --- Btrm [0/1] Atmospheric transmission for band B 191-200 E10.4 ct/s Crate ?=-99 Count rate in band C(160-284eV) 201-210 E10.4 ct/s e_Crate ?=-99 1-σ uncertainty for Crate 211-220 E10.4 --- Ctrm [0/1] Atmospheric transmission for band C 221-230 E10.4 ct/s Mrate ?=-99 Count rate in band M 231-240 E10.4 ct/s e_Mrate ?=-99 1-σ uncertainty for Mrate 241-250 E10.4 --- Mtrm [0/1] Atmospheric transmission for band M 251-260 E10.4 ct/s M1rate ?=-99 Count rate in band M1(440-930eV) 261-270 E10.4 ct/s e_M1rate ?=-99 1-σ uncertainty for M1rate 271-280 E10.4 --- M1trm [0/1] Atmospheric transmission for band M1 281-290 E10.4 ct/s M2rate ?=-99 Count rate in band M2(600-1100eV) 291-300 E10.4 ct/s e_M2rate ?=-99 1-σ uncertainty for M2rate 301-310 E10.4 --- M2trm [0/1] Atmospheric transmission for band M2 311-320 E10.4 ct/s Irate ?=-99 Count rate in band I(770-1500eV) 321-330 E10.4 ct/s e_Irate ?=-99 1-σ uncertainty for Irate 331-340 E10.4 --- Itrm [0/1] Atmospheric transmission for band I 341-350 E10.4 ct/s Jrate ?=-99 Count rate in band J(1100-2200eV) 351-360 E10.4 ct/s e_Jrate ?=-99 1-σ uncertainty for Jrate 361-370 E10.4 --- Jtrm [0/1] Atmospheric transmission for band J 371-380 E10.4 ct/s 26rate ?=-99 Count rate in band 1.8-6.3keV 381-390 E10.4 ct/s e_26rate ?=-99 1-σ uncertainty for 26rate 391-400 E10.4 --- 26trm [0/1] Atmospheric transmission for 1.8-6.3keV
Note (1): these 6 characters should be interpreted as an 18-bit octal word, with only the least significant (rightmost) 16 bits being used. They contain the following information (bits numbered 1-16 from left to right - most significant to least significant): 1 = set to 1 if the observation contains bad telemetry. 2 = set to 1 if there are fewer than 50 useful telemetry subframes in the observation (each observation can contain a maximum of 125 subframes for flights 13.083 and 13.102, or 250 for the other flights). 3 = set to 1 if the livetime correction is uncertain. 5 = set to 1 if the B and/or C-band data are definitely contaminated. 6 = set to 1 if the B and/or C-band data are possibly contaminated. 10 = set to 1 if the payload was pointed at the Earth. 11 = set to 1 if a B and/or C-band source was in the field of view. These are! HZ43, Am Her, the Cygnus Loop, Vela-Puppis SNR's, Sco X-1, and U Gem. 12 = set to 1 if the M and/or I-band data show evidence for the presence of a source in the field of view. 13 = set to 1 if the J-and/or 2-6keV band data show evidence for the presence of a source in the field of view. 14 = set to 1 if the following sources are in the field of view: sources listed in the 4-th Uhuru catalog (4U) with ≥20ct/s; Vela-Puppis SNR's; Cygnus Loop. Example: The flag word of the first record of file 31 (13.083) is written as: 004000, indicating that bit 5 is set because the B and C-band data for that observation are known to be contaminated. Note that records were not cast onto the maps if the following flags were set: * For the B and C-bands: 1, 2, 3, 5, 10, 11 * For the M1-through 2-6keV bands: 1, 2, 3, 10, 14 Note (2): number of atoms along the line of sight in the atmosphere, equals twice the number of molecules per cm2 calculated from CIRA72 model atmosphere, as described in the paper Note (3): number of atoms along the line of sight in the atmosphere, calculated from CIRA72 model atmosphere, as described in the paper
Byte-by-byte Description of file: maps.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Nx [92/182] Number of pixels along X-axis 4 A1 --- --- [x] 5- 6 I2 --- Ny [92/92] Number of pixels along Y-axis 7 A1 --- --- [x] 8 I1 --- Nz [2/2] Number of frames (map and error map) 10- 21 A12 --- FileName Name of FITS file 23- 83 A61 --- Text Explanations of file
History: * 27-Sep-1983 (Cat. VII/43/, CDS) The tape with the data files and FORTRAN programs was received at CDS, kindly supplied by W.T. Sanders (Wisconsin Univ.) * 09-Oct-1997 (Cat. VII/43/, Seth W. Digel, NSSDC/ADC) The count and exposure maps, both Aitoff and Zenithal Equal Area projections, were converted to FITS format images. For the Aitoff and Zenithal Equal Area polar projection maps, FITS files with look up tables to convert pixel numbers to Galactic coordinates and vice versa were generated. Because two projection centers were used for the Aitoff maps, and polar projection maps for both the north and south pole were used, a total of eight FITS files with lookup tables was generated. * 05-Jun-2014 (F. Ochsenbein, CDS) Catalog moved to the IX section (high energy), and standard documentation added.
(End) Seth W. Digel and Gail L. Schneider [SSDOO/ADC] 9-Oct-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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