ASTROSAT CZTI

Data Quality Report

Orbit 24655

Creation date: 2024-06-27T19:08:26.147044
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/AS1T03_191T01_9000003618_24655cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24655cztM0_level2_quad_clean.evt
Size (bytes)575,835,840144,777,600
Size549.2 MB 138.1 MB
Events in quadrant A3,592,798993,004
Events in quadrant B3,722,719997,934
Events in quadrant C4,109,735940,299
Events in quadrant D5,496,266922,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158572
B0160972
C0172682
D0216572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7638590.772454%
B7639771.007985%
C76391141.492342%
D76392303.010865%

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 8378 7640 2 2 0.02% 0.03%
B 8379 7641 0 0 0.00% 0.00%
C 8379 7641 8 8 0.10% 0.10%
D 8379 7641 154 154 1.84% 2.02%

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 6 16 39984 211.22 921 899 185.0
A 13 254 13284 66.93 921 899 185.0
A 3 137 8419 40.64 921 899 185.0
B 0 189 42722 239.79 912 886 174.5
B 15 32 31619 176.15 912 886 174.5
B 0 190 25378 140.38 912 886 174.5
C 7 247 317649 1575.13 869 875 201.1
C 3 233 208987 1034.82 869 875 201.1
C 14 238 139628 689.94 869 875 201.1
D 8 195 1039952 4874.37 878 852 213.2
D 1 52 895008 4194.45 878 852 213.2
D 7 238 126870 591.14 878 852 213.2

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