ASTROSAT CZTI

Data Quality Report

Orbit 00913

Creation date: 2024-06-27T14:04:37.906600
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/AS1P01_161T02_9000000184_00913cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00913cztM0_level2_quad_clean.evt
Size (bytes)1,005,439,68076,161,600
Size958.9 MB 72.6 MB
Events in quadrant A7,352,769474,787
Events in quadrant B8,089,110472,714
Events in quadrant C7,384,213467,365
Events in quadrant D7,211,045456,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262460
B0284390
C0263680
D0258730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226110.176678%
B6226460.738837%
C6227220.353300%
D6227180.289064%

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 7386 6227 231 231 3.13% 3.71%
B 7386 6227 396 396 5.36% 6.36%
C 7387 6228 231 231 3.13% 3.71%
D 7387 6228 231 231 3.13% 3.71%

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 15 127 208004 467.16 1859 1878 441.2
A 14 170 15479 30.82 1859 1878 441.2
A 11 79 6911 11.41 1859 1878 441.2
B 3 0 379709 829.1 1954 1962 455.6
B 7 221 79581 170.36 1954 1962 455.6
B 5 249 60480 128.44 1954 1962 455.6
C 15 241 141937 278.21 1821 1884 503.4
C 9 83 34012 63.82 1821 1884 503.4
C 2 53 28466 52.8 1821 1884 503.4
D 12 188 241205 445.95 1752 1815 536.8
D 1 4 176506 325.42 1752 1815 536.8
D 13 73 95487 174.5 1752 1815 536.8

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