ASTROSAT CZTI

Data Quality Report

Orbit 31835

Creation date: 2024-06-27T20:33:19.927999
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/AS1A10_109T01_9000004646_31835cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31835cztM0_level2_quad_clean.evt
Size (bytes)577,474,560111,093,120
Size550.7 MB 105.9 MB
Events in quadrant A3,516,082735,383
Events in quadrant B5,665,176727,945
Events in quadrant C4,031,463699,655
Events in quadrant D3,782,002693,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151351
B0223181
C0165911
D0160101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7294280.383877%
B7295981.343386%
C72952363.235093%
D7295490.671693%

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 7624 7296 0 0 0.00% 0.00%
B 7625 7297 7 7 0.09% 0.10%
C 7625 7297 45 45 0.59% 0.62%
D 7625 7297 17 17 0.22% 0.23%

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 13 254 14611 74.88 909 893 183.2
A 3 137 9137 45.0 909 893 183.2
A 0 226 7496 36.04 909 893 183.2
B 6 159 1954943 11410.91 894 870 171.2
B 10 245 77059 444.91 894 870 171.2
B 0 229 64728 372.9 894 870 171.2
C 0 10 267464 1300.72 870 878 205.0
C 14 238 169207 821.31 870 878 205.0
C 3 233 137265 665.46 870 878 205.0
D 8 195 236922 1125.72 883 864 209.7
D 12 218 64697 304.41 883 864 209.7
D 13 249 57497 270.07 883 864 209.7

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