ASTROSAT CZTI

Data Quality Report

Orbit 12037

Creation date: 2024-06-27T16:21:30.624228
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/AS1A04_044T01_9000001782_12037cztM0_level2.evt modeM0/AS1A04_044T01_9000001782_12037cztM0_level2_quad_clean.evt
Size (bytes)771,330,24072,060,480
Size735.6 MB 68.7 MB
Events in quadrant A3,642,465452,051
Events in quadrant B4,309,206448,485
Events in quadrant C3,548,612445,534
Events in quadrant D11,365,795327,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154983
B0176442
C0154222
D0387632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72961371.877741%
B72962703.700658%
C72961251.713268%
D7296298540.912829%

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 9012 7297 2 2 0.02% 0.03%
B 9011 7296 62 62 0.69% 0.85%
C 9012 7297 17 17 0.19% 0.23%
D 9011 7296 2839 2839 31.51% 38.91%

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 1 162 62563 330.7 901 882 186.5
A 1 178 30840 160.62 901 882 186.5
A 1 161 27028 140.18 901 882 186.5
B 4 239 735708 4261.75 893 871 172.4
B 15 204 63706 364.42 893 871 172.4
B 0 85 21725 120.94 893 871 172.4
C 14 234 110034 531.44 882 886 205.4
C 13 61 6554 27.6 882 886 205.4
C 12 4 3072 10.64 882 886 205.4
D 1 52 8014577 48476.07 682 662 165.3
D 8 195 294583 1777.92 682 662 165.3
D 2 136 263233 1588.29 682 662 165.3

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