ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_001T05_9000003550_level2

Creation date: 2020-03-06T15:41:36.412811
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_001T05_9000003550cztM0_level2_bc.evt modeM0/AS1A07_001T05_9000003550cztM0_level2_quad_clean.evt
Size (bytes)378,702,720183,165,120
Size361.2 MB 174.7 MB
Events in quadrant A2,060,9661,322,600
Events in quadrant B2,221,6391,325,180
Events in quadrant C2,345,7521,223,164
Events in quadrant D4,256,0401,088,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183840
B0188910
C0196780
D0312120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84681151.358054%
B84681391.641474%
C84682943.471894%
D8468176820.878602%

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 11083 8468 0 0 0.00% 0.00%
B 11083 8468 8 8 0.07% 0.09%
C 11083 8468 6 6 0.05% 0.07%
D 11083 8467 56 56 0.51% 0.66%

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 13 254 14253 117.63 533 527 116.7
A 0 226 3546 25.87 533 527 116.7
A 12 194 3385 24.49 533 527 116.7
B 0 197 75810 749.26 529 520 100.5
B 0 245 49066 483.11 529 520 100.5
B 5 172 26797 261.5 529 520 100.5
C 0 10 239859 2051.85 490 491 116.7
C 0 239 189535 1620.48 490 491 116.7
C 7 221 28046 236.2 490 491 116.7
D 12 218 2030868 18772.44 458 443 108.2
D 2 82 165510 1526.14 458 443 108.2
D 12 250 73695 677.26 458 443 108.2

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