ASTROSAT CZTI

Data Quality Report

Orbit 31134

Creation date: 2024-06-27T20:24:02.452063
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/AS1T04_018T01_9000004494_31134cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31134cztM0_level2_quad_clean.evt
Size (bytes)190,054,08039,991,680
Size181.2 MB 38.1 MB
Events in quadrant A1,148,809271,255
Events in quadrant B1,749,380270,312
Events in quadrant C1,157,976261,321
Events in quadrant D1,553,461253,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047340
B065740
C048360
D063120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212420.094162%
B2125200.941176%
C2125241.129412%
D212590.423529%

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 2124 2124 0 0 0.00% 0.00%
B 2125 2125 2 2 0.09% 0.09%
C 2125 2125 0 0 0.00% 0.00%
D 2125 2125 4 4 0.19% 0.19%

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 13 254 3652 55.6 298 293 60.4
A 3 137 2681 39.52 298 293 60.4
A 0 226 2644 38.91 298 293 60.4
B 6 159 570750 10096.74 289 282 56.5
B 0 190 14321 248.48 289 282 56.5
B 0 230 9036 154.94 289 282 56.5
C 14 238 47461 715.3 280 282 66.0
C 12 175 6780 98.52 280 282 66.0
C 0 10 4795 68.42 280 282 66.0
D 8 195 426077 5570.13 286 282 76.4
D 2 250 13702 175.56 286 282 76.4
D 12 218 8576 108.5 286 282 76.4

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