ASTROSAT CZTI

Data Quality Report

Orbit 26726

Creation date: 2024-06-27T19:32:11.850793
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/AS1T03_223T01_9000003850_26726cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26726cztM0_level2_quad_clean.evt
Size (bytes)681,586,56088,591,680
Size650.0 MB 84.5 MB
Events in quadrant A3,966,915564,771
Events in quadrant B8,144,953526,318
Events in quadrant C3,488,098562,059
Events in quadrant D4,565,117538,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164430
B0288090
C0147360
D0181920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70491752.482622%
B7049161422.896865%
C70491051.489573%
D70502463.489362%

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 7424 7050 108 108 1.45% 1.53%
B 7424 7050 1392 1392 18.75% 19.74%
C 7424 7050 4 4 0.05% 0.06%
D 7425 7051 155 155 2.09% 2.20%

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 0 13 648540 3745.44 852 833 172.9
A 11 29 18375 101.44 852 833 172.9
A 6 16 15642 85.63 852 833 172.9
B 0 189 4597088 29709.48 811 791 154.7
B 10 251 219186 1411.66 811 791 154.7
B 3 112 104081 667.64 811 791 154.7
C 14 238 131165 677.01 822 826 192.5
C 3 233 81168 417.31 822 826 192.5
C 15 208 35151 178.29 822 826 192.5
D 1 52 958423 4741.39 825 799 202.0
D 7 80 163798 807.04 825 799 202.0
D 2 250 153311 755.12 825 799 202.0

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