ASTROSAT CZTI

Data Quality Report

Orbit 22670

Creation date: 2024-06-27T18:44:16.195643
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/AS1A08_007T01_9000003362_22670cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22670cztM0_level2_quad_clean.evt
Size (bytes)474,914,88087,200,640
Size452.9 MB 83.2 MB
Events in quadrant A3,014,418565,930
Events in quadrant B3,288,225567,523
Events in quadrant C3,025,683540,145
Events in quadrant D4,628,960530,045

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128821
B0136931
C0129151
D0178681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258951.518057%
B62591191.901262%
C62591061.693561%
D62595358.547691%

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 6998 6259 0 0 0.00% 0.00%
B 6999 6260 0 0 0.00% 0.00%
C 6999 6260 1 1 0.01% 0.02%
D 6999 6260 381 381 5.44% 6.09%

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 13 254 11808 70.41 781 765 156.8
A 0 226 6902 39.13 781 765 156.8
A 3 137 6176 34.5 781 765 156.8
B 0 230 85066 582.38 776 759 144.8
B 0 219 58409 398.24 776 759 144.8
B 0 229 39295 266.2 776 759 144.8
C 14 238 117729 683.75 740 744 171.1
C 10 22 16556 92.42 740 744 171.1
C 13 61 5199 26.04 740 744 171.1
D 1 52 1002873 5723.73 726 708 175.1
D 5 32 329994 1880.67 726 708 175.1
D 12 227 216143 1230.43 726 708 175.1

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