ASTROSAT CZTI

Data Quality Report

Orbit 20255

Creation date: 2024-06-27T18:13:06.242590
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_117T01_9000003002_20255cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20255cztM0_level2_quad_clean.evt
Size (bytes)572,489,28083,773,440
Size546.0 MB 79.9 MB
Events in quadrant A4,197,791513,132
Events in quadrant B4,003,902512,145
Events in quadrant C4,020,302486,088
Events in quadrant D4,592,248488,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173982
B0167652
C0167212
D0187192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77212493.224971%
B77212353.043647%
C77212623.393343%
D77212573.328584%

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 8451 7723 41 41 0.49% 0.53%
B 8451 7723 15 15 0.18% 0.19%
C 8451 7723 45 45 0.53% 0.58%
D 8451 7723 135 135 1.60% 1.75%

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 312301 1569.79 973 951 198.3
A 12 96 118274 591.53 973 951 198.3
A 4 2 18282 87.38 973 951 198.3
B 6 36 58723 310.28 960 936 186.2
B 7 220 53217 280.71 960 936 186.2
B 0 230 30891 160.84 960 936 186.2
C 9 54 208384 948.9 923 928 218.6
C 14 238 142808 648.96 923 928 218.6
C 3 233 44012 197.07 923 928 218.6
D 7 238 568832 2443.35 947 920 232.4
D 9 1 169677 726.05 947 920 232.4
D 7 38 83608 355.75 947 920 232.4

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