ASTROSAT CZTI

Data Quality Report

Orbit 46738

Creation date: 2024-06-27T23:27:02.532278
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_205T01_9000006260_46738cztM0_level2.fits modeM0/AS1T05_205T01_9000006260_46738cztM0_level2_quad_clean.evt
Size (bytes)533,344,320114,949,440
Size508.6 MB 109.6 MB
Events in quadrant A6,757,591753,989
Events in quadrant B4,443,157792,194
Events in quadrant C3,162,997768,017
Events in quadrant D4,816,006661,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247052
B0181642
C0149912
D0197582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72562653.652150%
B72561602.205072%
C7256250.344542%
D72574696.462726%

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 9131 7258 54 54 0.59% 0.74%
B 9131 7258 78 78 0.85% 1.07%
C 9131 7258 4 4 0.04% 0.06%
D 9132 7259 404 404 4.42% 5.57%

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 10 83 3571631 21604.87 795 777 165.3
A 9 191 86923 521.21 795 777 165.3
A 13 254 12719 72.25 795 777 165.3
B 3 112 632770 4003.32 797 771 157.9
B 12 3 513807 3249.76 797 771 157.9
B 4 171 49147 306.43 797 771 157.9
C 3 233 40913 212.94 793 795 188.4
C 14 254 16630 84.05 793 795 188.4
C 12 2 10134 49.57 793 795 188.4
D 13 249 1513929 7908.48 764 741 191.3
D 9 19 94403 489.51 764 741 191.3
D 7 204 55468 286.02 764 741 191.3

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