ASTROSAT CZTI

Data Quality Report

Orbit 22788

Creation date: 2024-06-27T18:45:46.509989
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_168T01_9000003368_22788cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22788cztM0_level2_quad_clean.evt
Size (bytes)554,607,360146,399,040
Size528.9 MB 139.6 MB
Events in quadrant A3,569,7841,003,519
Events in quadrant B3,767,5181,006,749
Events in quadrant C3,618,087962,591
Events in quadrant D5,321,089928,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157512
B0161622
C0159172
D0210603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7665540.704501%
B7665871.135029%
C76651091.422048%
D76643654.762526%

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 7885 7666 0 0 0.00% 0.00%
B 7885 7666 5 5 0.06% 0.07%
C 7885 7666 10 10 0.13% 0.13%
D 7884 7665 260 260 3.30% 3.39%

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 14959 74.97 925 906 187.4
A 0 226 8113 38.45 925 906 187.4
A 3 137 7608 35.75 925 906 187.4
B 0 230 66865 381.17 919 897 173.1
B 0 245 32115 180.38 919 897 173.1
B 0 228 20980 116.04 919 897 173.1
C 14 238 139974 677.16 875 879 205.4
C 10 22 60671 291.09 875 879 205.4
C 2 16 8549 37.34 875 879 205.4
D 1 52 1628896 7492.95 878 848 217.3
D 2 152 229955 1054.45 878 848 217.3
D 14 50 54484 246.86 878 848 217.3

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