ASTROSAT CZTI

Data Quality Report

Orbit 26017

Creation date: 2024-06-27T19:23:53.734524
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/AS1A07_068T01_9000003760_26017cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26017cztM0_level2_quad_clean.evt
Size (bytes)616,150,08096,886,080
Size587.6 MB 92.4 MB
Events in quadrant A3,978,520642,749
Events in quadrant B3,484,147643,054
Events in quadrant C3,343,931615,154
Events in quadrant D7,367,037532,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165410
B0150110
C0146860
D0267950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7178660.919476%
B7178290.404012%
C7178510.710504%
D7178128017.832265%

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 7618 7179 45 45 0.59% 0.63%
B 7618 7179 0 0 0.00% 0.00%
C 7618 7179 0 0 0.00% 0.00%
D 7618 7179 1189 1189 15.61% 16.56%

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 670577 3867.35 858 841 173.2
A 13 254 11353 60.7 858 841 173.2
A 3 137 8094 41.88 858 841 173.2
B 10 245 88032 532.8 849 828 163.7
B 0 190 42065 251.95 849 828 163.7
B 12 111 20425 119.73 849 828 163.7
C 14 238 129079 676.15 812 817 189.7
C 14 225 18181 91.54 812 817 189.7
C 3 233 18175 91.51 812 817 189.7
D 1 52 2737106 14538.47 737 715 188.2
D 12 2 1745535 9270.25 737 715 188.2
D 12 233 49841 261.01 737 715 188.2

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