MDI Observables: mdi.hr_V

MDI Resident Archive

MDI Observables

mdi.hr_V_12s

Description

Doppler velocity from 12-second observations in high-resolution mode, sampled every 12 seconds and extracted into one of four different 512*512 subrasters. Because the data acquisition sequence was incompatible with the MDI Structure Program running through most of the mission, the data were only acquired during Phase 0, between 3&ndash25 March, 1996.. All of the data were acquired in linear polarization.

There is one record every 12 seconds during hours when there are any images, to assure continuity of certain ancillary data. Records for which there is no image (fill records) have the high-order bit of the QUALITY keyvalue set, and have DATAVALS = 0. Approximately 31% of the records are fill.

Coverage / Duty Cycle

The fraction of possible time intervals containing partial or complete images during each mission phase is as follows:

	<1996.04.20 (Record count only)	1996.04.20 – 1996.05.22	1996.05.23 – 1998.06.24	1998.10.20 – 1998.12.21	1999.02.03 – 2010.09.14	2010.09.14 – 2011.04.12	>2011.04.12 (Record count only)
Partial	22725	0	0	0	0	0	0
Complete	21942	0	0	0	0	0	0

Superseded records: 0 in addition to 33300 valid

Data Storage

Statistics of SUMS data storage:

SUMS directories: 155
Average size (MB): 47.261
Minimum size (MB): 1.681
Maximum size (MB): 73.842
Total size (GB): 7.153

DSDS Source Series

sha.dsds[mdi][lev1.5][hr_V_12s_01h]

MDI Product Codes of Contributing Level 0 Data

4ac02800

Keywords

Prime key(s):

T_REC (time) : 33300/33300 valid (33300 distinct):
    range: 1996.03.03_23:00:00_TAI – 1996.03.25_18:59:48_TAI

Variable key(s):

cparms_sg000 (string) : all 33300 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 33300 default: = 0 (0)
data_bscale (double) : all 33300 default: = 1 (1)
T_OBS (time) : 22725/33300 valid (22725 distinct):
    range: 1996.03.03_23:32:36_TAI – 1996.03.25_18:45:36_TAI
    10575 default: = 'NaN' (nan)
CDELT1 (float) : 22725/33300 valid (34 distinct):
    range: 0.605445 – 0.605448
    10575 default: = 'NaN' (nan)
CDELT2 (float) : 22725/33300 valid (34 distinct):
    range: 0.605445 – 0.605448
    10575 default: = 'NaN' (nan)
CRPIX1 (float) : 22725/33300 valid (4 distinct):
    169.838
    495.838
    255.838
    261.838
    10575 default: = 'NaN' (nan)
CRPIX2 (float) : 22725/33300 valid (4 distinct):
    -178.421
    167.579
    311.579
    257.579
    10575 default: = 'NaN' (nan)
CROTA2 (float) : 22725/33300 valid (1 distinct):
    0.0
    10575 default: = 'NaN' (nan)
CAR_ROT (int) : 4239/33300 valid (2 distinct):
    1906
    1907
    29061 default: = -2147483648 (-2147483648)
CRLN_OBS (float) : 26964/33300 valid (26964 distinct):
    range: 1.969 – 359.217
    6336 default: = 'NaN' (nan)
CRLT_OBS (float) : 26964/33300 valid (25466 distinct):
    range: -7.2125 – -6.7921
    6336 default: = 'NaN' (nan)
DSUN_OBS (double) : 26964/33300 valid (26964 distinct):
    range: 147113901342.72 – 147980722435.21
    6336 default: = 'NaN' (nan)
OBS_VR (double) : 26964/33300 valid (26964 distinct):
    range: 433.840780 – 473.443572
    6336 default: = 'NaN' (nan)
OBS_VW (double) : 26964/33300 valid (26964 distinct):
    range: 29315.026334 – 29513.346400
    6336 default: = 'NaN' (nan)
OBS_VN (double) : 26964/33300 valid (26964 distinct):
    range: -103.428859 – 1226.289890
    6336 default: = 'NaN' (nan)
X0 (float) : 22725/33300 valid (4 distinct):
    260.838
    168.838
    254.838
    494.838
    10575 default: = 'NaN' (nan)
Y0 (float) : 22725/33300 valid (4 distinct):
    310.579
    166.579
    -179.421
    256.579
    10575 default: = 'NaN' (nan)
EARTH_DT (float) : all 33300 default: = 'NaN' (nan)
DATAVALS (int) : 33300/33300 valid (452 distinct):
    range: 0 – 262144
MISSVALS (int) : 22725/33300 valid (451 distinct):
    range: 0 – 260911
    10575 default: = -2147483648 (-2147483648)
DATAMIN (float) : 22725/33300 valid (1340 distinct):
    range: -24575.0 – 8.0
    10575 default: = 'NaN' (nan)
DATAMAX (float) : 22725/33300 valid (1662 distinct):
    range: -1042.0 – 24575.0
    10575 default: = 'NaN' (nan)
DATAMEDN (float) : 22725/33300 valid (20554 distinct):
    range: -24575.000 – 24575.000
    10575 default: = 'NaN' (nan)
DATAMEAN (float) : 22725/33300 valid (22261 distinct):
    range: -24574.810 – 24574.709
    10575 default: = 'NaN' (nan)
DATARMS (float) : 22725/33300 valid (22280 distinct):
    range: 39.153896 – 5434.636720
    10575 default: = 'NaN' (nan)
DATASKEW (float) : 22725/33300 valid (22414 distinct):
    range: -465.168 – 508.322
    10575 default: = 'NaN' (nan)
DATAKURT (float) : 22725/33300 valid (22419 distinct):
    range: -1.854 – 258389.000
    10575 default: = 'NaN' (nan)
DATE (time) : 33300/33300 valid (6278 distinct):
    range: 2012-07-10T21:00Z – 2012-07-10T22:51Z
RUNTIME (time) : 22725/33300 valid (107 distinct):
    range: 2002.04.03_00:21_UTC – 2002.04.04_16:44_UTC
    10575 default: = 'NaN' (nan)
SOURCE (string) : 22725/33300 valid (22725 distinct):
    range: prog:mdi,level:lev1[3],series:4ac02800_01h[27831],sel:[100] – prog:mdi,level:lev1[9],series:4ac02800_01h[27912],sel:[9]
    10575 default: = '' ()
BLDVER15 (string) : 22725/33300 valid (1 distinct):
    41200
    10575 default: = '' ()
CALTBLS (string) : 22725/33300 valid (1 distinct):
    mdi.caltables_doppler[hr_tune_2]
    10575 default: = '' ()
TBLXYUPD (time) : 22725/33300 valid (3 distinct):
    2002.04.02_10:23:51_UTC
    2002.04.04_10:23:46_UTC
    2002.04.03_10:34:11_UTC
    10575 default: = 'NaN' (nan)
XY_FROM (string) : 22725/33300 valid (1 distinct):
    DEFAULT
    10575 default: = '' ()
XY_QUAL (int) : 22725/33300 valid (2 distinct):
    -1
    0
    10575 default: = -2147483648 (-2147483648)
HISTORY (string) : all 33300 default: = '' ()
BLD_VERS (string) : 22725/33300 valid (1 distinct):
    V6R3X
    10575 default: = 'unknown' (unknown)
COMMENT (string) : 33300/33300 valid (1 distinct):
    Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO).
QUALITY (int) : 33300/33300 valid (31 distinct):
    range: 0x80000000 – 0x0000029d

Constant key(s):

DPC (int) : 0x4ac02800
POLSTATE (string) : LP
CRVAL1 (float) : 0.000
CRVAL2 (float) : 0.000
CTYPE1 (string) : HPLN-TAN
CTYPE2 (string) : HPLT-TAN
CUNIT1 (string) : arcsec
CUNIT2 (string) : arcsec
WCSAXES (int) : 2
WCSNAME (string) : Helioprojective-cartesian
BUNIT (string) : m/s
CADENCE (float) : 12.0
CAMERA (string) : MDI
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
ROLL_TBL (string) : mdi.roll_table
RSUN_REF (double) : 696000000
T_REC_epoch (time) : 1977.01.01_00:33:12_TAI
T_REC_step (float) : 12.0
CONTENT (string) : MDI High Resolution High Cadence Dopplergram

Special Notes

this page last modified 9 Jul 2015, 11:28-0700