ASTROSAT CZTI

Data Quality Report

Orbit 26942

Creation date: 2024-06-27T19:34:46.381130
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/AS1A09_134T01_9000003896_26942cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26942cztM0_level2_quad_clean.evt
Size (bytes)795,689,28095,814,720
Size758.8 MB 91.4 MB
Events in quadrant A9,935,615526,502
Events in quadrant B4,117,074642,017
Events in quadrant C3,713,356626,766
Events in quadrant D5,821,835581,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345920
B0169150
C0156890
D0222130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7536290138.495223%
B75352653.516921%
C75362012.667197%
D75365447.218684%

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 7780 7535 2100 2100 26.99% 27.87%
B 7780 7535 46 46 0.59% 0.61%
C 7781 7536 1 1 0.01% 0.01%
D 7781 7536 404 404 5.19% 5.36%

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 14 235 6961954 45485.2 756 739 153.0
A 8 192 27568 175.3 756 739 153.0
A 5 168 22522 142.33 756 739 153.0
B 0 189 270739 1521.43 930 905 177.4
B 15 33 111673 624.55 930 905 177.4
B 0 219 40538 223.47 930 905 177.4
C 14 238 145163 677.49 907 913 212.9
C 15 208 19919 89.26 907 913 212.9
C 13 61 6211 24.88 907 913 212.9
D 1 52 1416921 6696.39 892 867 211.5
D 2 250 426082 2010.8 892 867 211.5
D 7 80 379222 1789.21 892 867 211.5

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