MDI Resident Archive MDI Observables

mdi.detune

Description

Intensity of individual filtergrams taken at a variety of the Michelson tuning motor positions (wavelengths) in both normal (``STD'')) mode and `''CAL'' (calibration) mode, in which the front window is imaged on the camers, and binned 2*2 on the camera. The imaging mode is given by the value of the key OBSMODE (or the combination of MDI_CAL1 and MDI_CAL2). (The tuning positions are given by combinations of the keys MDI_MTM1 and MDI_MTM2 (or RLC_MTM1 and RLC_MTM2, or TRG_MTM1 and TRG_MTM2). The images are acquired in linear polarization. The data are acquired as part of regular calibration sequences in order to ascertain the best settings of the tuning motors for the set of filtergrams used in regular observations.

Each detune sequence consists of 10 filtergrams acquired at ~3-second intervals during the ``bottom'' half of each minute, with about 40 sequences run over a course of about 40 min. Each filtergram is uniquely identified by both its T_REC and I_DREC (sequence number within the series) values. These calibration sequences were run approximately monthly.

Coverage / Duty Cycle

These observations were taken only occasionally (approximately monthly) as part of instrument calibration sequences. The number of observations (record counts only) during each mission phase are 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 72 22833 6507 65948 2440 0
Complete 0 72 22757 6323 65217 2440 0
Superseded records: 0 in addition to 97800 valid
Dates of Focus Calibration Runs
Year Jan. Feb. Mar. Apr. May June July Aug. Sep. Oct. Nov. Dec.
1996 — — — 29 — — — — 05, 30 01, 25 — 03, 04
1997 08 12 04, 17–21, 27 04, 05 12 13 16, 18 06, 28–30 25 28, 29 01, 03 05, 15
1998 05, 31 — 07 11, 12 19 09 — — — 20, 21, 23 23 04
1999 — 03, 04 02, 11 21, 22 28 — 07 06 01 06 09, 24 06, 17, 16
2000 12 04 06, 10 06 03 06 11, 19, 31 30 — 24 21 12
2001 09, 10, 19 06, 27 — 04 08 01 03 01 06 05 09, 12 05
2002 04 04, 14 11, 12 — 02 05, 13, 28 23 05 06 03 07 02
2003 08, 17 07 04 04, 30 — 02, 26 11, 21 05 02 13 05 04
2004 07 02 01 09 04, 28 11 02, 03 05 07 08 02 10
2005 04, 25 23 31 26 24 23 29 29 21, 28 24 28 21
2006 26 23 21, 22 27 22 23 27 22 21 24 20 19
2007 23 12 07, 08, 20, 21, 22, 28 05 07 11, 19 11 08 12 09 05 07
2008 07 04, 06/07 03, 31 — 05 03, 17 01, 17 05 08, 11 08, 23, 30 — 01
2009 05, 14 09, 23 17 08 18 18 20 24, 25 21 21 17, 18 15
2010 08 19 08 01, 05 03 07 13 12 08 12, 13 18 08
2011 05 14 25 — — — — — — — — —

Data Storage

Statistics of SUMS data storage:

DSDS Source Series

sha.dsds[mdi][lev1.5][detune_01d]

MDI Product Codes of Contributing Level 0 Data

404d4400
404e4400

Keywords

Prime key(s): 
T_REC (time) : 97800/97800 valid (97792 distinct):
    range: 1996.04.29_21:58:16_TAI – 2011.03.25_21:55:44_TAI
I_DREC (short) : 97800/97800 valid (5115 distinct):
    range: 0 – 5114
Variable key(s): 
ITYPE (string) : 72036/97800 valid (2 distinct):
    FD
    DARK
    25764 default: = '' ()
cparms_sg000 (string) : all 97800 default: = 'compress Rice' (compress Rice)
data_bzero (double) : all 97800 default: = 0 (0)
data_bscale (double) : all 97800 default: = 1 (1)
T_OBS (time) : 97800/97800 valid (97792 distinct):
    range: 1996.04.29_21:58:16_TAI – 2011.03.25_21:55:44_TAI
DATE__OBS (time) : 97800/97800 valid (97792 distinct):
    range: 1996-04-29T21:57:51Z – 2011-03-25T21:55:15Z
RECORD (short) : 97800/97800 valid (20 distinct):
    range: 0 – 19
OBSMODE (string) : 72036/97800 valid (2 distinct):
    STD
    CAL
    25764 default: = '' ()
MDI_CAL1 (short) : 72036/97800 valid (4 distinct):
    1
    2
    3
    0
    25764 default: = -1 (-1)
MDI_CAL2 (short) : 72036/97800 valid (3 distinct):
    1
    3
    0
    25764 default: = -1 (-1)
MDI_MTM1 (short) : 72036/97800 valid (82 distinct):
    range: 15 – 114
    25764 default: = -1 (-1)
MDI_MTM2 (short) : 72036/97800 valid (45 distinct):
    range: 41 – 169
    25764 default: = -1 (-1)
RLC_MTM1 (short) : 72036/97800 valid (13 distinct):
    range: -45 – 29
    25764 default: = -32768 (-32768)
RLC_MTM2 (short) : 72036/97800 valid (12 distinct):
    range: -22 – 15
    25764 default: = -32768 (-32768)
TRG_MTM1 (string) : 72036/97800 valid (13 distinct):
    range: F1 – LC-15
    25764 default: = '' ()
TRG_MTM2 (string) : 72036/97800 valid (13 distinct):
    range: F1 – LC-15
    25764 default: = '' ()
MDI_EXP (short) : 72036/97800 valid (2 distinct):
    5
    1
    25764 default: = -1 (-1)
OBSNAME (string) : 72036/97800 valid (6 distinct):
    range: cal_detune2a – obs_detune2b
    25764 default: = '' ()
MDI_X0 (float) : 97800/97800 valid (15585 distinct):
    range: 510.913 – 512.599
MDI_Y0 (float) : 97800/97800 valid (16382 distinct):
    range: 510.335 – 512.632
CROTA2 (float) : 97800/97800 valid (6730 distinct):
    range: -9.0 – 180.0
CAR_ROT (int) : 97800/97800 valid (171 distinct):
    range: 1908 – 2108
CRLN_OBS (float) : 97800/97800 valid (9816 distinct):
    range: 0.434 – 359.605
CRLT_OBS (float) : 97800/97800 valid (9754 distinct):
    range: -7.3005 – 7.2870
DSUN_OBS (double) : 97800/97800 valid (9821 distinct):
    range: 145500712687.75 – 150816990832.82
OBS_VR (double) : 97800/97800 valid (9821 distinct):
    range: -588.715907 – 586.935186
OBS_VW (double) : 97800/97800 valid (9821 distinct):
    range: 28571.081823 – 30069.639447
OBS_VN (double) : 97800/97800 valid (9821 distinct):
    range: -3827.440775 – 3721.651334
RSUN_OBS (double) : 97800/97800 valid (9821 distinct):
    range: 951.887542 – 986.667694
EARTH_DT (float) : 97800/97800 valid (9637 distinct):
    range: 4.100898 – 5.619713
DATAVALS (int) : 97800/97800 valid (324 distinct):
    range: 0 – 65536
MISSVALS (int) : 97800/97800 valid (324 distinct):
    range: 0 – 65536
DATAMIN (float) : 97800/97800 valid (271 distinct):
    range: -32721.0 – 507.0
DATAMAX (float) : 97800/97800 valid (6478 distinct):
    range: 0.0 – 32576.0
DATAMEDN (float) : 97800/97800 valid (87525 distinct):
    range: 0.000 – 9252.519
DATAMEAN (float) : 97800/97800 valid (96790 distinct):
    range: -53.693 – 7772.479
DATARMS (float) : 97800/97800 valid (97027 distinct):
    range: 0.000000 – 4959.109860
DATASKEW (float) : 97800/97800 valid (94769 distinct):
    range: -14.954 – 47.893
DATAKURT (float) : 97800/97800 valid (95883 distinct):
    range: -1.966 – 6229.914
DPC (int) : 97800/97800 valid (2 distinct):
    404e4400
    404d4400
DATE (time) : 97800/97800 valid (97800 distinct):
    range: 2014-07-11T21:05Z – 2014-07-11T21:59Z
SOURCE (string) : 97800/97800 valid (97792 distinct):
    range: prog:mdi,level:lev1[1],series:404d4400_01h[100316],sel:[0] – prog:mdi,level:lev1[8],series:404e4400_01h[43940],sel:[9]
BLDVER15 (string) : 97800/97800 valid (22 distinct):
    range: -41200 – 60100
TBLXYUPD (time) : 97800/97800 valid (151 distinct):
    range: 2001.01.11_18:28:12_UTC – 2011.04.01_18:04:49_UTC
HISTORY (string) : all 97800 default: = '' ()
QUALITY (int) : 97800/97800 valid (19 distinct):
    range: 00000000 – 000002fd
Constant key(s): 
MDI_PAW (short) : 0
CONTENT (string) : MDI Tuning Calibration data
COMMENT (string) : Calibration data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO)
INSTRUME (string) : MDI
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
ROLL_TBL (string) : mdi.roll_table
XY_FROM (string) : SMOOTH
T_REC_epoch (time) : 1977.01.01_00:33:12_TAI
T_REC_step (float) : 1.0

Special Notes

Occcasionally there are two distinct records with the same value of T_REC (which has a 1-second slotting as an index value). The sequence number in the set of detune images taken for the day is thus used as an additional prime key. Such cases occur on 1996.10.01 (one extra record), 1997.05.12 (4), 1997.07.16 (1), 2004.04.09 (1), and 2009 12 15 (1).

Valid HTML 4.01 Transitional this page last modified 28 Jul 2015, 11:48-0700