ASTROSAT CZTI

Data Quality Report

Orbit 50670

Creation date: 2025-02-09T08:26:39.921344
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/AS1T05_241T01_9000006446_50670cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50670cztM0_level2_quad_clean.evt
Size (bytes)622,572,48094,720,320
Size593.7 MB 90.3 MB
Events in quadrant A8,411,846523,656
Events in quadrant B4,385,322686,868
Events in quadrant C4,497,449623,278
Events in quadrant D5,219,668556,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298031
B0179591
C0180771
D0206041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6857144621.087939%
B68572253.281318%
C68571902.770891%
D68575538.064751%

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 7597 6858 1325 1325 17.44% 19.32%
B 7597 6857 80 80 1.05% 1.17%
C 7597 6858 104 104 1.37% 1.52%
D 7597 6857 465 465 6.12% 6.78%

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 12 80 4680784 27326.17 686 668 171.3
A 12 113 479963 2798.5 686 668 171.3
A 8 38 128079 743.92 686 668 171.3
B 4 170 640009 4192.41 719 693 152.5
B 5 185 235966 1542.84 719 693 152.5
B 7 252 73165 475.25 719 693 152.5
C 13 113 740001 3795.26 708 702 194.8
C 14 254 139204 711.01 708 702 194.8
C 4 5 132700 677.62 708 702 194.8
D 8 129 852442 4487.24 682 659 189.8
D 7 110 427583 2249.06 682 659 189.8
D 2 249 351209 1846.72 682 659 189.8

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