ASTROSAT CZTI

Data Quality Report

Orbit 32311

Creation date: 2024-06-27T20:38:44.299968
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/AS1A10_005T01_9000004700_32311cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32311cztM0_level2_quad_clean.evt
Size (bytes)619,583,04068,734,080
Size590.9 MB 65.5 MB
Events in quadrant A3,263,771446,642
Events in quadrant B5,622,291435,010
Events in quadrant C4,088,421315,833
Events in quadrant D5,333,102413,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139592
B0214171
C0164561
D0205081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6735580.861173%
B67351822.702301%
C6735166824.766147%
D67352523.741648%

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 7655 6736 2 2 0.03% 0.03%
B 7655 6736 48 48 0.63% 0.71%
C 7655 6732 16 16 0.21% 0.24%
D 7655 6736 175 175 2.29% 2.60%

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 9 143 22656 132.18 827 809 165.3
A 13 6 19171 111.1 827 809 165.3
A 0 6 16295 93.7 827 809 165.3
B 6 159 2007587 12845.07 817 797 156.2
B 5 172 157437 1002.62 817 797 156.2
B 0 190 118053 750.53 817 797 156.2
C 14 254 540315 3361.74 680 685 160.5
C 14 238 494300 3075.08 680 685 160.5
C 3 233 184354 1144.2 680 685 160.5
D 8 195 1619957 8671.18 785 765 186.7
D 13 249 633592 3388.94 785 765 186.7
D 2 234 29801 155.49 785 765 186.7

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