ASTROSAT CZTI

Data Quality Report

Orbit 20211025_C06_010T05_9000004736_level2

Creation date: 2021-10-26T15:52:13.954033
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_010T05_9000004736cztM0_level2_bc.evt modeM0/AS1C06_010T05_9000004736cztM0_level2_quad_clean.evt
Size (bytes)1,276,352,640349,479,360
Size1.2 GB 333.3 MB
Events in quadrant A3,980,0132,434,892
Events in quadrant B6,625,5772,438,245
Events in quadrant C7,892,4892,372,445
Events in quadrant D18,874,0652,041,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380900
B0496300
C0511600
D0890470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18806400.212698%
B1880611366.040625%
C188064702.499202%
D18806430322.880995%

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 26426 18806 11 11 0.04% 0.06%
B 26426 18806 52 52 0.20% 0.28%
C 26426 18806 77 77 0.29% 0.41%
D 26426 18807 1356 1356 5.13% 7.21%

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 103639 476.21 976 963 215.6
A 13 254 36000 162.5 976 963 215.6
A 13 6 25742 114.92 976 963 215.6
B 5 172 1728568 8841.12 973 954 195.4
B 0 197 225911 1151.22 973 954 195.4
B 8 128 186022 947.09 973 954 195.4
C 3 233 2858115 13277.79 941 938 215.2
C 9 160 891696 4139.5 941 938 215.2
C 0 10 242899 1124.43 941 938 215.2
D 8 195 4506562 19926.12 863 842 226.1
D 12 227 3510847 15522.66 863 842 226.1
D 7 80 1765881 7805.72 863 842 226.1

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