ASTROSAT CZTI

Data Quality Report

Orbit 20240326_A13_033T03_9000006144_level2

Creation date: 2024-03-30T14:15:27.260734
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/AS1A13_033T03_9000006144cztM0_level2.fits modeM0/AS1A13_033T03_9000006144cztM0_level2_quad_clean.evt
Size (bytes)621,731,520617,339,520
Size592.9 MB 588.7 MB
Events in quadrant A3,714,6983,646,225
Events in quadrant B3,308,9843,292,732
Events in quadrant C3,772,0583,658,676
Events in quadrant D3,127,6383,201,716

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02293650
B02822250
C01551210
D02236670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014540
B014540
C014540
D014540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7138819462.725948%
B713881495620.950300%
C713889641.350367%
D7138847366.634168%

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 80773 71378 0 0 0.00% 0.00%
B 80773 71151 0 0 0.00% 0.00%
C 80773 71376 0 0 0.00% 0.00%
D 80773 71323 0 0 0.00% 0.00%

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 7 110 3077 8.74 967 899 249.2
A 0 29 2988 8.38 967 899 249.2
A 14 95 2927 8.14 967 899 249.2
B 2 9 3012 12.44 872 826 175.8
B 2 8 2425 9.1 872 826 175.8
B 3 17 2337 8.6 872 826 175.8
C 3 202 2900 7.61 997 923 259.9
C 1 81 2859 7.45 997 923 259.9
C 1 80 2782 7.15 997 923 259.9
D 8 176 2687 7.47 898 812 251.0
D 15 47 2235 5.67 898 812 251.0
D 10 189 2219 5.61 898 812 251.0

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