ASTROSAT CZTI

Data Quality Report

Orbit 26093

Creation date: 2024-06-27T19:24:38.474937
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_018T01_9000003774_26093cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26093cztM0_level2_quad_clean.evt
Size (bytes)492,324,48087,531,840
Size469.5 MB 83.5 MB
Events in quadrant A3,150,949568,837
Events in quadrant B3,232,177582,349
Events in quadrant C3,235,586541,304
Events in quadrant D4,843,294498,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134660
B0136390
C0136660
D0188500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6589270.409774%
B6589260.394597%
C6588801.214329%
D65885999.092289%

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 7614 6590 0 0 0.00% 0.00%
B 7614 6589 0 0 0.00% 0.00%
C 7613 6588 24 24 0.32% 0.36%
D 7613 6588 554 554 7.28% 8.41%

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 11343 64.29 816 800 164.0
A 3 137 7515 40.95 816 800 164.0
A 0 226 7092 38.37 816 800 164.0
B 0 190 19552 119.99 813 793 156.3
B 12 111 19162 117.5 813 793 156.3
B 11 111 16918 103.15 813 793 156.3
C 14 238 123871 673.48 773 776 182.8
C 14 225 64765 350.1 773 776 182.8
C 3 233 35839 191.84 773 776 182.8
D 7 80 931768 5214.89 745 728 178.5
D 1 52 875472 4899.57 745 728 178.5
D 12 233 182066 1015.7 745 728 178.5

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