ASTROSAT CZTI

Data Quality Report

Orbit 19955

Creation date: 2024-06-27T18:09:10.373661
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/AS1A05_160T01_9000002970_19955cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19955cztM0_level2_quad_clean.evt
Size (bytes)600,451,20073,149,120
Size572.6 MB 69.8 MB
Events in quadrant A6,157,926423,751
Events in quadrant B3,070,162480,982
Events in quadrant C3,516,740456,513
Events in quadrant D5,021,607422,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222321
B0128271
C0142521
D0191151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169137822.337494%
B6169540.875344%
C61691151.864160%
D617085613.873582%

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 7129 6169 1134 1134 15.91% 18.38%
B 7129 6169 10 10 0.14% 0.16%
C 7129 6169 39 39 0.55% 0.63%
D 7130 6170 642 642 9.00% 10.41%

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 3077783 22657.5 665 653 135.8
A 5 16 484075 3559.53 665 653 135.8
A 14 254 33200 239.65 665 653 135.8
B 7 220 52923 359.3 752 733 145.3
B 0 230 23473 156.55 752 733 145.3
B 0 214 21529 143.17 752 733 145.3
C 3 233 431343 2557.24 719 723 168.4
C 9 221 160819 950.73 719 723 168.4
C 14 238 112483 663.69 719 723 168.4
D 12 218 2033474 11896.95 693 672 170.9
D 12 233 196500 1146.08 693 672 170.9
D 12 250 89449 519.57 693 672 170.9

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