ASTROSAT CZTI

Data Quality Report

Orbit 50632

Creation date: 2025-02-06T20:35:22.668720
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/AS1T05_239T01_9000006444_50632cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50632cztM0_level2_quad_clean.evt
Size (bytes)2,624,935,680199,653,120
Size2.4 GB 190.4 MB
Events in quadrant A12,264,7041,653,904
Events in quadrant B34,307,927885,960
Events in quadrant C32,865,899750,797
Events in quadrant D16,276,8721,454,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490482
B01150152
C01106152
D0615124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188369264.916118%
B188361077257.188363%
C188371102658.533737%
D1883615518.234232%

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 19566 18838 540 540 2.76% 2.87%
B 19566 18838 9268 9268 47.37% 49.20%
C 19567 18839 9608 9608 49.10% 51.00%
D 19566 18838 1427 1427 7.29% 7.58%

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 12 250 824526 1685.44 1984 1938 488.1
A 4 3 614851 1255.83 1984 1938 488.1
A 6 161 445148 908.12 1984 1938 488.1
B 4 170 24938272 72483.52 1609 1554 344.0
B 5 172 607298 1760.72 1609 1554 344.0
B 5 185 565774 1640.02 1609 1554 344.0
C 15 174 19373169 50633.48 1365 1354 382.6
C 15 148 931520 2431.24 1365 1354 382.6
C 4 5 880118 2296.89 1365 1354 382.6
D 7 60 1061515 2002.36 1909 1845 529.2
D 2 249 876816 1653.35 1909 1845 529.2
D 7 126 670966 1264.38 1909 1845 529.2

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