MDI Observables: mdi.hr_Ld

MDI Resident Archive

MDI Observables

mdi.hr_Ld_bin2x2

Description

Line depth from 30-second observations in high-resolution mode, sampled once per minute at second 30 and binned 2*2 on the camera The data are acquired intermittently during various campaigns, and always in linear polarization.

There is one record per minute 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 54% 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	0	0	.00169	.00008	<0.00001	0	0
Complete	0	0	.00167	.00005	<0.00001	0	0

Superseded records: 0 in addition to 4200 valid

The data were acquired in sporadic brief campaigns or test/validation sequences between 1996.07.26 and 2007.03.28. Almost all of the data were acquired in one campaign between 1996.10.26–29.

Data Storage

Statistics of SUMS data storage:

SUMS directories: 70
Average size (MB): 8.124
Minimum size (MB): .176
Maximum size (MB): 18.144
Total size (GB): 0.555

DSDS Source Series

sha.dsds[mdi][lev1.5][hr_Ld_bin2x2_01h]

MDI Product Codes of Contributing Level 0 Data

44484800

80000000 (only for fill records with no data)

Keywords

Prime key(s):

T_REC (time) : 4200/4200 valid (4200 distinct):
    range: 1996.07.26_16:00:30_TAI – 2007.03.28_17:59:30_TAI

Variable key(s):

cparms_sg000 (string) : all 4200 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 4200 default: = 0 (0)
data_bscale (double) : all 4200 default: = 1 (1)
T_OBS (time) : 1894/4200 valid (1894 distinct):
    range: 1996.07.26_16:59:30_TAI – 2007.03.28_17:29:30_TAI
    2306 default: = 'NaN' (nan)
DATE__OBS (time) : 1894/4200 valid (1894 distinct):
    range: 1996-07-26T16:58:45Z – 2007-03-28T17:28:42Z
    2306 default: = 'NaN' (nan)
CDELT1 (float) : 1894/4200 valid (72 distinct):
    range: 1.210503 – 1.215649
    2306 default: = 'NaN' (nan)
CDELT2 (float) : 1894/4200 valid (72 distinct):
    range: 1.210503 – 1.215649
    2306 default: = 'NaN' (nan)
CRPIX1 (float) : 1894/4200 valid (1612 distinct):
    range: 247.510 – 249.718
    2306 default: = 'NaN' (nan)
CRPIX2 (float) : 1894/4200 valid (1526 distinct):
    range: 155.215 – 156.707
    2306 default: = 'NaN' (nan)
CROTA2 (float) : 1894/4200 valid (4 distinct):
    0.0
    -9.9
    -9.9
    180.0
    2306 default: = 'NaN' (nan)
CAR_ROT (int) : 4200/4200 valid (11 distinct):
    range: 1912 – 2054
DPC (int) : 4200/4200 valid (2 distinct):
    0x44484800
    0xffffffff80000000
CRLN_OBS (float) : 4200/4200 valid (4200 distinct):
    range: 11.663 – 350.103
CRLT_OBS (float) : 4200/4200 valid (4200 distinct):
    range: -7.2380 – 7.2874
DSUN_OBS (double) : 4200/4200 valid (4200 distinct):
    range: 146214581021.25 – 150586557416.70
OBS_VR (double) : 4200/4200 valid (4200 distinct):
    range: -553.089373 – 582.082555
OBS_VW (double) : 4200/4200 valid (4200 distinct):
    range: 28717.727578 – 29809.203742
OBS_VN (double) : 4200/4200 valid (4200 distinct):
    range: -3406.129037 – 3710.362507
RSUN_OBS (double) : 4200/4200 valid (4200 distinct):
    range: 953.344168 – 981.850417
R_SUN (float) : 1894/4200 valid (1891 distinct):
    range: 784.848 – 811.107
    2306 default: = 'NaN' (nan)
X0 (float) : 1894/4200 valid (1612 distinct):
    range: 246.510 – 248.718
    2306 default: = 'NaN' (nan)
Y0 (float) : 1894/4200 valid (1526 distinct):
    range: 154.215 – 155.707
    2306 default: = 'NaN' (nan)
EARTH_DT (float) : 1894/4200 valid (1893 distinct):
    range: 4.164934 – 5.467993
    2306 default: = 'NaN' (nan)
DATAVALS (int) : 4200/4200 valid (24 distinct):
    range: 0 – 262144
MISSVALS (int) : 1894/4200 valid (23 distinct):
    range: 0 – 253014
    2306 default: = -2147483648 (-2147483648)
DATAMIN (float) : 1894/4200 valid (10 distinct):
    range: -13344.0 – 0.0
    2306 default: = 'NaN' (nan)
DATAMAX (float) : 1894/4200 valid (292 distinct):
    range: 2081.0 – 28271.0
    2306 default: = 'NaN' (nan)
DATAMEDN (float) : 1894/4200 valid (527 distinct):
    range: 1758.091 – 3285.089
    2306 default: = 'NaN' (nan)
DATAMEAN (float) : 1894/4200 valid (1712 distinct):
    range: 1745.154 – 3294.056
    2306 default: = 'NaN' (nan)
DATARMS (float) : 1894/4200 valid (1878 distinct):
    range: 153.018311 – 404.657410
    2306 default: = 'NaN' (nan)
DATASKEW (float) : 1894/4200 valid (1879 distinct):
    range: -10.349 – 27.149
    2306 default: = 'NaN' (nan)
DATAKURT (float) : 1894/4200 valid (1892 distinct):
    range: 43.640 – 3051.768
    2306 default: = 'NaN' (nan)
BLD_VERS (string) : 1894/4200 valid (1 distinct):
    V7R0X
    2306 default: = '' ()
DATE (time) : 4200/4200 valid (513 distinct):
    range: 2012-09-11T00:33Z – 2012-09-11T00:41Z
RUNTIME (time) : 1894/4200 valid (70 distinct):
    range: 1998.10.21_19:57_UTC – 2007.04.05_21:34_UTC
    2306 default: = 'NaN' (nan)
SOURCE (string) : 1894/4200 valid (1894 distinct):
    range: prog:mdi,level:lev1[1],series:44484800_01h[118940],sel:[0] – prog:mdi,level:lev1[4],series:44484800_01h[40600],sel:[1]
    2306 default: = '' ()
BLDVER15 (string) : 1894/4200 valid (7 distinct):
    range: 40001 – 50900
    2306 default: = '' ()
CALTBLS (string) : 1894/4200 valid (1 distinct):
    mdi.caltables_intensity[hr_vers_0]
    2306 default: = '' ()
TBLXYUPD (time) : 1894/4200 valid (9 distinct):
    range: 1998.07.27_18:21:17_UTC – 2007.04.05_20:33:51_UTC
    2306 default: = 'NaN' (nan)
XY_FROM (string) : 1894/4200 valid (1 distinct):
    SMOOTH
    2306 default: = '' ()
XY_QUAL (int) : 1894/4200 valid (1 distinct):
    0
    2306 default: = -2147483648 (-2147483648)
HISTORY (string) : all 4200 default: = '' ()
POLSTATE (string) : all 4200 default: = 'UNK' (UNK)
COMMENT (string) : 4200/4200 valid (1 distinct):
    Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO).
QUALITY (int) : 4200/4200 valid (11 distinct):
    range: 0x80000000 – 0x00000280

Constant key(s):

CAMERA (string) : MDI
CONTENT (string) : MDI High Resolution Line Depth Binned 2x2
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) : Arbitrary intensity units
CADENCE (float) : 60.0
INSTRUME (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_00:33:13_TAI
T_REC_step (float) : 60.0
INTERVAL (float) : 30.00

Special Notes

DP 44484800 was always acquired in conjunction with DP 4a482000 (mdi.hr_V_bin2x2).

this page last modified 14 Jul 2015, 11:02-0700