ASTROSAT CZTI

Data Quality Report

Orbit 20220215_A06_005T01_9000004932_level2

Creation date: 2022-02-17T16:00:59.662448
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A06_005T01_9000004932cztM0_level2_bc.evt modeM0/AS1A06_005T01_9000004932cztM0_level2_quad_clean.evt
Size (bytes)2,768,866,560710,582,400
Size2.6 GB 677.7 MB
Events in quadrant A11,752,2784,651,765
Events in quadrant B20,026,0654,505,933
Events in quadrant C14,732,2994,569,298
Events in quadrant D33,655,9114,073,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02010
B02010
C02010
D02010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011040
B011040
C011040
D011040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01113610
B01482160
C01169090
D01932400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542431120.206478%
B5424338197.040540%
C542431590.293125%
D54243582510.738713%

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 72557 54251 7 7 0.01% 0.01%
B 72556 54241 281 281 0.39% 0.52%
C 72557 54247 24 24 0.03% 0.04%
D 72556 54242 1046 1046 1.44% 1.93%

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 9 143 300128 472.63 2855 2813 629.1
A 10 83 252998 397.71 2855 2813 629.1
A 13 6 110143 170.62 2855 2813 629.1
B 5 172 7097556 13010.84 2780 2730 545.3
B 0 190 401689 731.63 2780 2730 545.3
B 4 171 345298 628.22 2780 2730 545.3
C 15 214 2295143 3587.88 2791 2770 638.9
C 14 67 1061703 1657.38 2791 2770 638.9
C 0 10 392628 610.18 2791 2770 638.9
D 8 195 7739725 12051.75 2670 2588 642.0
D 7 80 5588531 8700.94 2670 2588 642.0
D 10 118 2432246 3784.56 2670 2588 642.0

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