ASTROSAT CZTI

Data Quality Report

Orbit 36087

Creation date: 2022-08-10T07:45:03.422783
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/AS1T04_069T01_9000005158_36087cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36087cztM0_level2_quad_clean.evt
Size (bytes)432,918,72050,777,280
Size412.9 MB 48.4 MB
Events in quadrant A2,692,486298,382
Events in quadrant B3,297,291305,138
Events in quadrant C3,014,570287,193
Events in quadrant D3,745,810274,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110773
B0129092
C0117692
D0144842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531380.150574%
B53131743.274986%
C53131092.051572%
D53132254.234896%

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 7407 5314 0 0 0.00% 0.00%
B 7407 5314 130 130 1.76% 2.45%
C 7407 5314 86 86 1.16% 1.62%
D 7407 5314 187 187 2.52% 3.52%

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 10 83 168912 1281.15 650 639 131.3
A 13 6 12775 92.39 650 639 131.3
A 13 254 7851 54.91 650 639 131.3
B 5 172 604181 4917.81 644 626 122.7
B 0 190 73631 594.85 644 626 122.7
B 0 229 32597 260.5 644 626 122.7
C 0 10 327325 2238.81 629 637 145.9
C 15 214 220494 1506.69 629 637 145.9
C 9 187 6124 37.6 629 637 145.9
D 12 6 460579 3054.0 619 602 150.6
D 12 233 297612 1971.99 619 602 150.6
D 1 52 142550 942.46 619 602 150.6

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