ASTROSAT CZTI

Data Quality Report

Orbit 26783

Creation date: 2024-06-27T19:32:53.325066
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/AS1A09_079T01_9000003864_26783cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26783cztM0_level2_quad_clean.evt
Size (bytes)540,910,08097,056,000
Size515.9 MB 92.6 MB
Events in quadrant A4,115,722618,865
Events in quadrant B3,303,992631,164
Events in quadrant C3,374,802613,001
Events in quadrant D5,121,243597,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166320
B0142850
C0145040
D0197000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68701382.008734%
B68711612.343181%
C68701832.663755%
D68703975.778748%

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 7070 6871 7 7 0.10% 0.10%
B 7071 6872 3 3 0.04% 0.04%
C 7070 6871 10 10 0.14% 0.15%
D 7070 6871 244 244 3.45% 3.55%

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 0 13 873618 5239.22 831 812 166.6
A 12 96 31071 181.64 831 812 166.6
A 13 254 11721 65.48 831 812 166.6
B 0 229 25516 156.91 827 804 157.5
B 12 111 19096 116.14 827 804 157.5
B 11 111 16807 101.61 827 804 157.5
C 14 238 127955 683.82 800 804 185.9
C 2 16 78005 415.19 800 804 185.9
C 15 208 50180 265.54 800 804 185.9
D 7 80 976205 4963.01 804 782 196.5
D 1 52 658512 3346.57 804 782 196.5
D 2 250 334098 1695.93 804 782 196.5

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