ASTROSAT CZTI

Data Quality Report

Orbit 20170614_A03_091T01_9000001296_level2

Creation date: 2017-09-24T04:48:25.042095
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_091T01_9000001296cztM0_level2.evt modeM0/AS1A03_091T01_9000001296cztM0_level2_quad_clean.evt
Size (bytes)672,448,320119,033,280
Size641.3 MB 113.5 MB
Events in quadrant A6,138,255736,338
Events in quadrant B4,510,944751,407
Events in quadrant C4,388,016737,129
Events in quadrant D4,682,653720,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244180
B0195280
C0195730
D0204710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01960
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94832522.657387%
B95291401.469199%
C95421071.121358%
D95111471.545579%

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 10769 9694 53 53 0.49% 0.55%
B 10769 9706 1 1 0.01% 0.01%
C 10769 9693 12 12 0.11% 0.12%
D 10769 9701 46 46 0.43% 0.47%

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 8 5 1712572 7512.15 1121 1094 227.8
A 1 162 48015 205.95 1121 1094 227.8
A 15 174 23393 97.88 1121 1094 227.8
B 0 187 25480 111.89 1137 1109 217.8
B 0 214 25480 111.89 1137 1109 217.8
B 12 111 24999 109.68 1137 1109 217.8
C 14 234 67455 259.29 1104 1109 255.9
C 14 67 9175 31.52 1104 1109 255.9
C 13 61 8297 28.09 1104 1109 255.9
D 1 52 235653 860.32 1093 1063 272.7
D 2 136 153915 560.56 1093 1063 272.7
D 7 71 57880 208.37 1093 1063 272.7

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