ASTROSAT CZTI

Data Quality Report

Orbit 34742

Creation date: 2022-03-03T11:23:24.372877
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/AS1A10_048T04_9000004984_34742cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34742cztM0_level2_quad_clean.evt
Size (bytes)490,936,32056,577,600
Size468.2 MB 54.0 MB
Events in quadrant A3,993,427345,813
Events in quadrant B3,808,076352,568
Events in quadrant C2,783,974349,828
Events in quadrant D3,954,284324,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152163
B0144172
C0108082
D0151342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48511723.545661%
B48513166.514121%
C4851511.051330%
D48511382.844774%

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 6974 4852 138 138 1.98% 2.84%
B 6974 4852 189 189 2.71% 3.90%
C 6974 4852 35 35 0.50% 0.72%
D 6974 4852 114 114 1.63% 2.35%

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 15 169 1021443 8177.79 619 608 124.8
A 15 223 428759 3429.87 619 608 124.8
A 15 174 58117 460.7 619 608 124.8
B 4 171 1028769 9005.89 602 588 114.2
B 5 255 195289 1705.4 602 588 114.2
B 5 172 172819 1508.58 602 588 114.2
C 15 214 208041 1475.34 609 615 140.6
C 0 10 145077 1027.5 609 615 140.6
C 14 67 24289 168.38 609 615 140.6
D 8 195 891823 5989.53 607 590 148.8
D 2 250 184144 1233.58 607 590 148.8
D 2 249 119092 796.39 607 590 148.8

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