ASTROSAT CZTI

Data Quality Report

Orbit 28937

Creation date: 2024-06-27T19:58:16.516631
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_082T04_9000004150_28937cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28937cztM0_level2_quad_clean.evt
Size (bytes)580,786,560106,764,480
Size553.9 MB 101.8 MB
Events in quadrant A3,274,864708,185
Events in quadrant B3,345,516732,437
Events in quadrant C3,721,725694,465
Events in quadrant D6,790,096628,305

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140432
B0142262
C0152002
D0247572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6735230.341500%
B6735580.861173%
C67351682.494432%
D6735118417.579807%

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 7895 6736 0 0 0.00% 0.00%
B 7895 6736 1 1 0.01% 0.01%
C 7895 6736 36 36 0.46% 0.53%
D 7895 6736 1110 1110 14.06% 16.48%

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 5 98 20737 119.11 838 822 167.2
A 1 113 16202 91.98 838 822 167.2
A 13 254 11502 63.87 838 822 167.2
B 12 111 19645 119.2 841 821 157.9
B 11 111 17433 105.19 841 821 157.9
B 14 111 16592 99.87 841 821 157.9
C 3 233 278372 1489.45 804 809 186.4
C 14 238 149914 800.12 804 809 186.4
C 2 16 118446 631.26 804 809 186.4
D 8 195 2655862 14741.49 753 731 180.1
D 1 52 1267811 7034.92 753 731 180.1
D 2 234 24328 131.01 753 731 180.1

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