ASTROSAT CZTI

Data Quality Report

Orbit 45744

Creation date: 2024-06-27T23:15:40.470141
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_183T01_9000006124_45744cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45744cztM0_level2_quad_clean.evt
Size (bytes)614,905,920116,864,640
Size586.4 MB 111.5 MB
Events in quadrant A7,080,502767,659
Events in quadrant B5,282,430796,348
Events in quadrant C3,893,147783,998
Events in quadrant D5,925,930669,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259164
B0206222
C0168732
D0228172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74853164.221777%
B74863244.328079%
C74861592.123965%
D74867309.751536%

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 8835 7487 118 118 1.34% 1.58%
B 8836 7488 118 118 1.34% 1.58%
C 8836 7488 97 97 1.10% 1.30%
D 8836 7488 689 689 7.80% 9.20%

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 3227488 18513.22 837 819 174.3
A 7 191 220695 1261.55 837 819 174.3
A 13 248 178315 1018.39 837 819 174.3
B 3 112 1206879 7178.91 845 819 168.0
B 5 172 249137 1478.08 845 819 168.0
B 5 32 199994 1185.56 845 819 168.0
C 14 254 401463 2012.59 840 844 199.1
C 0 239 178503 892.51 840 844 199.1
C 3 233 33837 165.75 840 844 199.1
D 1 52 1603219 7801.94 810 787 205.4
D 7 38 751955 3657.29 810 787 205.4
D 2 249 122107 590.68 810 787 205.4

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