ASTROSAT CZTI

Data Quality Report

Orbit 49776

Creation date: 2024-12-11T11:34:54.463346
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/AS1A13_037T01_9000006440_49776cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49776cztM0_level2_quad_clean.evt
Size (bytes)3,262,752,000138,905,280
Size3.0 GB 132.5 MB
Events in quadrant A32,707,416926,935
Events in quadrant B10,892,5661,831,892
Events in quadrant C30,204,46313,774
Events in quadrant D45,521,730136,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011024010
B0451993
C01029333
D01482203

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18814898947.778250%
B188155813.087962%
C188151868699.314377%
D188151749092.957746%

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 20058 18815 7896 7896 39.37% 41.97%
B 20060 18818 235 235 1.17% 1.25%
C 20060 18812 5192 5192 25.88% 27.60%
D 20060 18818 15027 15027 74.91% 79.85%

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 12 50 5226010 12545.09 1563 1519 416.5
A 0 98 3284714 7883.63 1563 1519 416.5
A 8 8 2373104 5694.67 1563 1519 416.5
B 5 185 417219 997.13 1989 1921 416.5
B 4 206 350149 836.1 1989 1921 416.5
B 7 0 298795 712.79 1989 1921 416.5
C 15 148 5157860 36025.29 230 215 143.2
C 15 147 4880314 34086.68 230 215 143.2
C 15 197 2467565 17234.03 230 215 143.2
D 8 129 14534899 45800.04 694 646 317.3
D 15 168 8182641 25782.93 694 646 317.3
D 15 142 3295531 10382.77 694 646 317.3

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