ASTROSAT CZTI

Data Quality Report

Orbit 34770

Creation date: 2022-03-04T10:48:56.624411
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/AS1C07_004T01_9000004990_34770cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34770cztM0_level2_quad_clean.evt
Size (bytes)552,594,24047,082,240
Size527.0 MB 44.9 MB
Events in quadrant A2,770,227282,416
Events in quadrant B2,857,024295,564
Events in quadrant C3,025,979293,147
Events in quadrant D7,732,142191,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110542
B0113121
C0120431
D0265781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176420.811437%
B5176160.309119%
C5176190.367079%
D5176145328.071870%

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 7299 5177 26 26 0.36% 0.50%
B 7299 5177 6 6 0.08% 0.12%
C 7299 5177 14 14 0.19% 0.27%
D 7299 5177 1270 1270 17.40% 24.53%

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 15 174 118629 886.07 672 659 133.1
A 10 83 47699 353.32 672 659 133.1
A 13 254 9173 63.95 672 659 133.1
B 5 255 72246 564.61 679 662 126.8
B 0 190 50781 395.31 679 662 126.8
B 0 189 24767 190.13 679 662 126.8
C 15 214 224050 1459.26 671 679 153.1
C 14 67 96517 626.1 671 679 153.1
C 0 10 79790 516.82 671 679 153.1
D 10 118 1903556 13679.08 577 564 139.1
D 2 250 1243756 8936.31 577 564 139.1
D 8 195 1233537 8862.85 577 564 139.1

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