ASTROSAT CZTI

Data Quality Report

Orbit 20118

Creation date: 2024-06-27T18:11:32.067896
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/AS1A05_180T01_9000002992_20118cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20118cztM0_level2_quad_clean.evt
Size (bytes)583,894,08092,928,960
Size556.8 MB 88.6 MB
Events in quadrant A3,775,951618,579
Events in quadrant B4,453,476619,521
Events in quadrant C3,377,117584,403
Events in quadrant D5,649,860551,753

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149662
B0172972
C0137962
D0209062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63021672.649952%
B63021512.396065%
C6302821.301174%
D630284413.392574%

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 7597 6303 80 80 1.05% 1.27%
B 7597 6303 29 29 0.38% 0.46%
C 7597 6303 0 0 0.00% 0.00%
D 7597 6302 549 549 7.23% 8.71%

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 14 238 386044 2231.36 877 865 172.6
A 9 143 9569 50.42 877 865 172.6
A 0 226 7634 39.21 877 865 172.6
B 10 245 1028495 6305.78 866 848 163.0
B 0 198 19930 117.09 866 848 163.0
B 12 111 18687 109.46 866 848 163.0
C 14 238 134192 705.82 822 829 188.9
C 3 233 30269 155.81 822 829 188.9
C 0 207 8248 39.26 822 829 188.9
D 1 52 2429990 12893.08 783 764 188.4
D 11 176 185191 978.84 783 764 188.4
D 7 96 54488 285.14 783 764 188.4

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