ASTROSAT CZTI

Data Quality Report

Orbit 14551

Creation date: 2024-06-27T16:56:45.730301
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/AS1G08_081T01_9000002144_14551cztM0_level2.evt modeM0/AS1G08_081T01_9000002144_14551cztM0_level2_quad_clean.evt
Size (bytes)507,021,12099,365,760
Size483.5 MB 94.8 MB
Events in quadrant A3,646,402639,921
Events in quadrant B3,466,522631,223
Events in quadrant C3,757,184623,321
Events in quadrant D3,997,051614,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153412
B0150521
C0152441
D0166981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71821932.687274%
B71822002.784740%
C71821311.824004%
D71822783.870788%

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 7293 7184 1 1 0.01% 0.01%
B 7293 7184 5 5 0.07% 0.07%
C 7293 7184 2 2 0.03% 0.03%
D 7293 7184 138 138 1.89% 1.92%

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 15 238122 1377.4 855 834 172.3
A 12 189 54762 313.04 855 834 172.3
A 0 23 39808 226.24 855 834 172.3
B 0 229 37318 222.83 850 829 163.7
B 0 189 34581 206.12 850 829 163.7
B 12 111 19595 114.6 850 829 163.7
C 3 233 509158 2663.39 826 830 190.9
C 14 225 11236 54.52 826 830 190.9
C 13 61 6023 27.21 826 830 190.9
D 10 199 535185 2649.91 827 801 201.7
D 12 110 181327 895.19 827 801 201.7
D 2 152 82142 403.35 827 801 201.7

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