ASTROSAT CZTI

Data Quality Report

Orbit 20211023_C06_002T09_9000004734_level2

Creation date: 2021-10-26T15:40:30.798898
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/AS1C06_002T09_9000004734cztM0_level2_bc.evt modeM0/AS1C06_002T09_9000004734cztM0_level2_quad_clean.evt
Size (bytes)4,697,150,4001,383,243,840
Size4.4 GB 1.3 GB
Events in quadrant A18,782,6959,502,465
Events in quadrant B26,423,4129,323,936
Events in quadrant C24,539,4679,313,638
Events in quadrant D67,094,3848,285,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680320
B02038550
C01877030
D03351680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016340
B016340
C016340
D016340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A798043780.473660%
B7980435744.478472%
C7980411301.415969%
D79804966412.109669%

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 111679 79805 35 35 0.03% 0.04%
B 111679 79800 156 156 0.14% 0.20%
C 111679 79801 166 166 0.15% 0.21%
D 111679 79784 2441 2441 2.19% 3.06%

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 14 238 925201 976.57 4254 4197 943.1
A 14 239 315811 330.42 4254 4197 943.1
A 14 207 310164 324.43 4254 4197 943.1
B 5 172 5450810 6588.5 4185 4098 826.7
B 0 219 1664957 2009.02 4185 4098 826.7
B 0 189 563891 677.14 4185 4098 826.7
C 3 233 3461305 3652.38 4118 4102 946.6
C 9 160 2169471 2287.61 4118 4102 946.6
C 0 10 1175751 1237.79 4118 4102 946.6
D 8 195 23857684 25261.58 3875 3789 944.3
D 7 80 7799314 8255.56 3875 3789 944.3
D 2 250 5319981 5629.92 3875 3789 944.3

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