ASTROSAT CZTI

Data Quality Report

Orbit 20180615_A04_101T01_9000002170_level2

Creation date: 2018-06-19T10:37:24.213975
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/AS1A04_101T01_9000002170cztM0_level2_bc.evt modeM0/AS1A04_101T01_9000002170cztM0_level2_quad_clean.evt
Size (bytes)3,680,265,6001,318,564,800
Size3.4 GB 1.2 GB
Events in quadrant A27,253,8518,425,819
Events in quadrant B23,127,9558,262,027
Events in quadrant C28,668,4438,302,367
Events in quadrant D25,681,0558,177,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02253930
B02183190
C02317220
D02212750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020140
B020140
C020140
D020140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9879910941.107299%
B9879922192.245974%
C987998010.810737%
D9879915571.575927%

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 113150 98791 3 3 0.00% 0.00%
B 113150 98782 86 86 0.08% 0.09%
C 113150 98787 7 7 0.01% 0.01%
D 113150 98790 223 223 0.20% 0.23%

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 15 5462217 4827.24 5207 5109 1130.5
A 0 253 1067008 939.33 5207 5109 1130.5
A 12 189 429584 375.48 5207 5109 1130.5
B 10 16 1984204 2054.28 5132 4994 963.5
B 0 219 305292 311.69 5132 4994 963.5
B 0 205 294986 300.99 5132 4994 963.5
C 3 233 8695613 7807.29 5056 4983 1113.1
C 0 207 73766 61.79 5056 4983 1113.1
C 3 234 39060 30.61 5056 4983 1113.1
D 12 110 2431396 1901.23 5100 4955 1276.2
D 10 199 886649 690.85 5100 4955 1276.2
D 5 222 559220 434.29 5100 4955 1276.2

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