ASTROSAT CZTI

Data Quality Report

Orbit 19922

Creation date: 2024-06-27T18:08:50.095611
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/AS1A05_064T01_9000002964_19922cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19922cztM0_level2_quad_clean.evt
Size (bytes)764,395,200121,826,880
Size729.0 MB 116.2 MB
Events in quadrant A3,827,387815,237
Events in quadrant B4,332,364824,539
Events in quadrant C7,347,942755,825
Events in quadrant D7,099,028734,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171122
B0184372
C0273492
D0271102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80231131.408451%
B80221952.430815%
C8022126915.818998%
D802296712.054351%

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 8608 8024 17 17 0.20% 0.21%
B 8607 8023 16 16 0.19% 0.20%
C 8607 8022 307 307 3.57% 3.83%
D 8607 8023 859 859 9.98% 10.71%

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 14 238 218773 1154.47 935 915 188.7
A 0 226 8287 39.07 935 915 188.7
A 3 1 8220 38.71 935 915 188.7
B 3 112 267206 1495.09 942 916 178.1
B 7 220 121895 679.24 942 916 178.1
B 0 197 93871 521.9 942 916 178.1
C 9 221 3101846 15288.22 868 874 202.8
C 4 254 539603 2656.01 868 874 202.8
C 3 233 173351 850.34 868 874 202.8
D 7 38 1712951 8033.99 876 850 213.1
D 7 238 1580896 7414.33 876 850 213.1
D 1 52 208707 975.36 876 850 213.1

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