ASTROSAT CZTI

Data Quality Report

Orbit 27735

Creation date: 2024-06-27T19:43:40.901520
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_263T01_9000003990_27735cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27735cztM0_level2_quad_clean.evt
Size (bytes)466,810,560123,220,800
Size445.2 MB 117.5 MB
Events in quadrant A3,190,354850,493
Events in quadrant B3,580,296871,321
Events in quadrant C3,552,456825,787
Events in quadrant D3,420,583779,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128100
B0141680
C0142810
D0136880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5799430.741507%
B58002113.637931%
C58001141.965517%
D5800951.637931%

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 7074 5800 3 3 0.04% 0.05%
B 7075 5800 31 31 0.44% 0.53%
C 7075 5800 2 2 0.03% 0.03%
D 7075 5801 49 49 0.69% 0.84%

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 33798 185.08 814 800 178.3
A 6 16 14657 77.72 814 800 178.3
A 13 254 9300 47.67 814 800 178.3
B 3 64 351704 2097.67 809 794 167.3
B 5 255 27971 162.46 809 794 167.3
B 0 230 18901 108.24 809 794 167.3
C 3 233 338554 1708.64 787 794 197.7
C 14 238 131509 661.25 787 794 197.7
C 15 208 12862 61.05 787 794 197.7
D 1 52 203326 1012.34 776 756 200.1
D 11 176 158321 787.43 776 756 200.1
D 2 250 99754 494.74 776 756 200.1

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