ASTROSAT CZTI

Data Quality Report

Orbit 20170330_A03_051T01_9000001120_level2

Creation date: 2017-09-23T13:46:22.646726
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_051T01_9000001120cztM0_level2.evt modeM0/AS1A03_051T01_9000001120cztM0_level2_quad_clean.evt
Size (bytes)3,995,493,120768,893,760
Size3.7 GB 733.3 MB
Events in quadrant A28,724,0684,806,583
Events in quadrant B29,717,4804,893,376
Events in quadrant C28,229,6344,782,458
Events in quadrant D30,171,8454,581,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012560
B012560
C012560
D012540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280710
B01295550
C01271490
D01338650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615687211.171063%
B616049081.473930%
C615976070.985438%
D615787601.234207%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 69758 61727 112 112 0.16% 0.18%
B 69758 61743 104 104 0.15% 0.17%
C 69758 61736 0 0 0.00% 0.00%
D 69758 61722 268 268 0.38% 0.43%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 170 330593 220.32 7296 7144 1468.1
A 0 128 249340 164.97 7296 7144 1468.1
A 0 226 68455 41.76 7296 7144 1468.1
B 0 214 368886 262.3 7349 7188 1378.9
B 10 16 270464 190.93 7349 7188 1378.9
B 5 255 254263 179.18 7349 7188 1378.9
C 1 16 380329 226.96 7136 7167 1644.2
C 13 61 53874 28.41 7136 7167 1644.2
C 8 128 21699 8.84 7136 7167 1644.2
D 1 52 1392958 764.76 7043 6869 1812.4
D 12 233 1233490 676.78 7043 6869 1812.4
D 7 71 314352 169.65 7043 6869 1812.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter