ASTROSAT CZTI

Data Quality Report

Orbit 06669

Creation date: 2024-06-27T15:10:18.780908
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/AS1G06_135T01_9000000908_06669cztM0_level2.evt modeM0/AS1G06_135T01_9000000908_06669cztM0_level2_quad_clean.evt
Size (bytes)535,489,92089,504,640
Size510.7 MB 85.4 MB
Events in quadrant A2,881,744605,108
Events in quadrant B3,115,560609,473
Events in quadrant C2,801,757593,763
Events in quadrant D6,984,977456,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131042
B0135991
C0130091
D0252341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376550.862610%
B6376861.348808%
C6376490.768507%
D6376159625.031368%

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 7431 6377 0 0 0.00% 0.00%
B 7431 6377 23 23 0.31% 0.36%
C 7431 6377 2 2 0.03% 0.03%
D 7431 6377 1356 1356 18.25% 21.26%

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 8 15 14168 88.97 738 723 151.1
A 0 226 7217 42.97 738 723 151.1
A 12 194 6861 40.62 738 723 151.1
B 0 214 105154 729.13 742 724 143.2
B 4 80 32446 221.48 742 724 143.2
B 4 81 23598 159.71 742 724 143.2
C 9 247 26861 158.9 707 712 164.6
C 9 221 7517 41.35 707 712 164.6
C 1 3 5929 31.7 707 712 164.6
D 2 33 4438737 29242.35 615 595 151.8
D 2 63 89884 588.31 615 595 151.8
D 2 152 57700 376.26 615 595 151.8

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