ASTROSAT CZTI

Data Quality Report

Orbit 20200609_A09_047T01_9000003714_level2

Creation date: 2021-01-10T17:43:03.924032
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/AS1A09_047T01_9000003714cztM0_level2_bc.evt modeM0/AS1A09_047T01_9000003714cztM0_level2_quad_clean.evt
Size (bytes)6,798,623,0402,131,784,640
Size6.3 GB 2.0 GB
Events in quadrant A39,609,62314,254,933
Events in quadrant B34,743,68614,300,729
Events in quadrant C32,903,00113,722,324
Events in quadrant D88,519,20112,093,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030420
B030420
C030420
D030420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02370
B02370
C02370
D02370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03335200
B03183830
C03188330
D05460190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14879216831.131109%
B14879218771.261493%
C14879225041.682886%
D1487922110014.180870%

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 172942 148770 64 64 0.04% 0.04%
B 172942 148771 37 37 0.02% 0.02%
C 172942 148773 11 11 0.01% 0.01%
D 172942 148704 2927 2927 1.69% 1.97%

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 6 16 6941635 3836.14 8419 8286 1807.4
A 13 254 216168 115.02 8419 8286 1807.4
A 4 2 117647 60.51 8419 8286 1807.4
B 3 112 1108565 707.26 8358 8176 1555.9
B 0 229 706796 449.03 8358 8176 1555.9
B 0 190 322746 202.18 8358 8176 1555.9
C 7 247 1751090 934.2 7979 7966 1865.9
C 2 16 173002 88.45 7979 7966 1865.9
C 7 87 127664 64.15 7979 7966 1865.9
D 1 52 29767780 17152.89 7543 7301 1735.0
D 8 195 14949980 8612.44 7543 7301 1735.0
D 7 238 7277171 4190.1 7543 7301 1735.0

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