ASTROSAT CZTI

Data Quality Report

Orbit 08943

Creation date: 2024-06-27T15:39:16.153780
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/AS1A03_092T01_9000001240_08943cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08943cztM0_level2_quad_clean.evt
Size (bytes)469,483,20067,299,840
Size447.7 MB 64.2 MB
Events in quadrant A3,551,936400,701
Events in quadrant B3,216,999409,786
Events in quadrant C3,020,455405,629
Events in quadrant D4,006,314387,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143623
B0133622
C0130182
D0158562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62251442.313253%
B62251141.831325%
C6225851.365462%
D62252373.807229%

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 7415 6225 24 24 0.32% 0.39%
B 7415 6225 4 4 0.05% 0.06%
C 7415 6225 0 0 0.00% 0.00%
D 7415 6225 144 144 1.94% 2.31%

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 8 5 416384 2614.33 790 773 159.0
A 5 16 65127 404.81 790 773 159.0
A 0 128 9493 54.85 790 773 159.0
B 0 219 61198 404.1 797 780 149.5
B 6 51 23159 149.68 797 780 149.5
B 0 197 17641 112.77 797 780 149.5
C 13 61 5917 29.07 773 777 176.8
C 12 4 4675 22.04 773 777 176.8
C 3 202 1991 6.87 773 777 176.8
D 1 52 315779 1636.26 763 744 192.5
D 13 29 188419 974.76 763 744 192.5
D 10 199 150597 778.32 763 744 192.5

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