ASTROSAT CZTI

Data Quality Report

Orbit 20190307_A05_104T03_9000002770_level2

Creation date: 2019-03-29T12:42:02.010788
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/AS1A05_104T03_9000002770cztM0_level2_bc.evt modeM0/AS1A05_104T03_9000002770cztM0_level2_quad_clean.evt
Size (bytes)1,099,376,640389,880,000
Size1.0 GB 371.8 MB
Events in quadrant A6,512,0842,410,285
Events in quadrant B6,623,1062,472,037
Events in quadrant C7,041,1712,400,863
Events in quadrant D10,910,3572,304,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0669190
B0674450
C0692640
D0822510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06560
B06560
C06560
D06560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323134251.315260%
B323135231.618544%
C323136872.126079%
D3231312903.992201%

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 34103 32313 21 21 0.06% 0.06%
B 34103 32312 2 2 0.01% 0.01%
C 34103 32313 13 13 0.04% 0.04%
D 34103 32313 244 244 0.72% 0.76%

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 0 13 203999 568.88 1611 1577 355.8
A 13 254 46285 125.65 1611 1577 355.8
A 9 143 45845 124.41 1611 1577 355.8
B 0 229 103205 325.89 1634 1588 311.8
B 0 230 91026 286.83 1634 1588 311.8
B 3 64 43609 134.76 1634 1588 311.8
C 3 233 880111 2362.04 1574 1561 371.9
C 9 54 76958 202.71 1574 1561 371.9
C 8 128 14660 35.22 1574 1561 371.9
D 1 52 3758387 10173.65 1581 1519 369.3
D 7 238 633256 1710.75 1581 1519 369.3
D 7 96 165788 444.84 1581 1519 369.3

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