ASTROSAT CZTI

Data Quality Report

Orbit 42856

Creation date: 2024-06-27T22:45:03.712100
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/AS1T05_138T01_9000005828_42856cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42856cztM0_level2_quad_clean.evt
Size (bytes)347,676,48092,672,640
Size331.6 MB 88.4 MB
Events in quadrant A3,216,815609,626
Events in quadrant B2,633,906626,288
Events in quadrant C3,013,635615,842
Events in quadrant D3,559,192553,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129082
B0119262
C0124953
D0144962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733250.436072%
B5733320.558172%
C5732160.279135%
D57321442.512212%

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 7075 5734 15 15 0.21% 0.26%
B 7075 5734 19 19 0.27% 0.33%
C 7074 5733 15 15 0.21% 0.26%
D 7074 5733 137 137 1.94% 2.39%

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 10 83 623807 4855.26 622 609 128.4
A 12 189 108734 842.39 622 609 128.4
A 15 237 54504 419.89 622 609 128.4
B 5 255 110260 918.79 619 603 119.3
B 4 171 38407 316.75 619 603 119.3
B 15 85 23308 190.24 619 603 119.3
C 12 2 251542 1747.52 611 615 143.6
C 15 214 235266 1634.17 611 615 143.6
C 14 254 53690 369.63 611 615 143.6
D 2 249 446471 3001.63 602 585 148.5
D 12 6 364410 2449.21 602 585 148.5
D 1 52 84064 561.96 602 585 148.5

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