ASTROSAT CZTI

Data Quality Report

Orbit 51833

Creation date: 2025-04-28T17:10:56.846579
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/AS1C09_011T05_9000006466_51833cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51833cztM0_level2_quad_clean.evt
Size (bytes)761,065,92097,637,760
Size725.8 MB 93.1 MB
Events in quadrant A7,502,286568,891
Events in quadrant B5,982,007711,179
Events in quadrant C6,957,381614,004
Events in quadrant D7,161,805549,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273820
B0229460
C0258580
D0263740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7355132818.055744%
B73555116.947655%
C73556969.462950%
D735598913.446635%

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 7355 7355 1042 1042 14.17% 14.17%
B 7355 7355 296 296 4.02% 4.02%
C 7355 7355 604 604 8.21% 8.21%
D 7355 7355 841 841 11.43% 11.43%

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 13 248 2610106 15110.47 707 691 172.7
A 12 3 678722 3926.31 707 691 172.7
A 11 3 529658 3063.11 707 691 172.7
B 5 185 644791 4063.53 744 719 158.5
B 4 206 472957 2979.41 744 719 158.5
B 10 254 377616 2377.89 744 719 158.5
C 15 192 1059422 5340.93 715 710 198.2
C 0 192 837368 4220.73 715 710 198.2
C 12 254 620938 3128.89 715 710 198.2
D 11 129 2405907 12375.44 696 671 194.4
D 12 6 659161 3388.07 696 671 194.4
D 8 176 299003 1534.98 696 671 194.4

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