ASTROSAT CZTI

Data Quality Report

Orbit 20057

Creation date: 2024-06-27T18:10:42.273400
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_117T01_9000002988_20057cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20057cztM0_level2_quad_clean.evt
Size (bytes)431,781,12079,917,120
Size411.8 MB 76.2 MB
Events in quadrant A3,141,056507,969
Events in quadrant B3,045,334512,771
Events in quadrant C3,029,720485,103
Events in quadrant D3,441,648484,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130881
B0127631
C0127702
D0143591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6164811.314082%
B6165621.005677%
C6164711.151849%
D6164741.200519%

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 7214 6165 20 20 0.28% 0.32%
B 7215 6166 1 1 0.01% 0.02%
C 7214 6165 3 3 0.04% 0.05%
D 7214 6165 39 39 0.54% 0.63%

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 14 238 112133 712.76 781 766 156.2
A 12 16 9931 58.66 781 766 156.2
A 11 29 7777 44.87 781 766 156.2
B 12 111 18517 119.87 772 754 148.2
B 11 111 16168 104.02 772 754 148.2
B 14 111 15114 96.91 772 754 148.2
C 14 238 116009 666.92 738 745 172.8
C 4 254 27366 154.03 738 745 172.8
C 13 61 5058 24.96 738 745 172.8
D 1 52 327283 1755.48 756 734 186.0
D 2 184 166088 888.92 756 734 186.0
D 13 104 76942 409.68 756 734 186.0

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