ASTROSAT CZTI

Data Quality Report

Orbit 31609

Creation date: 2024-06-27T20:30:41.404084
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/AS1A10_094T75_9000004614_31609cztM0_level2.evt modeM0/AS1A10_094T75_9000004614_31609cztM0_level2_quad_clean.evt
Size (bytes)682,505,280131,316,480
Size650.9 MB 125.2 MB
Events in quadrant A5,241,181835,147
Events in quadrant B5,551,867912,233
Events in quadrant C3,524,127900,432
Events in quadrant D5,867,400829,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204851
B0220642
C0151821
D0219351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7169101314.130283%
B71681421.981027%
C7168991.381138%
D716882511.509487%

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 11454 7171 629 629 5.49% 8.77%
B 11454 7170 52 52 0.45% 0.73%
C 11454 7170 22 22 0.19% 0.31%
D 11454 7170 694 694 6.06% 9.68%

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 2216473 14255.86 777 761 155.4
A 15 174 13820 84.02 777 761 155.4
A 13 254 13427 81.49 777 761 155.4
B 6 159 1933786 12182.34 833 811 158.7
B 0 229 129450 810.73 833 811 158.7
B 4 80 66682 415.14 833 811 158.7
C 3 233 135938 721.23 804 807 187.4
C 14 238 134857 715.46 804 807 187.4
C 12 175 75274 397.45 804 807 187.4
D 12 218 1992474 10674.14 773 749 186.6
D 8 195 293082 1566.68 773 749 186.6
D 12 233 222889 1190.5 773 749 186.6

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