ASTROSAT CZTI

Data Quality Report

Orbit 35797

Creation date: 2022-05-14T11:16:03.531207
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/AS1A09_029T10_9000005140_35797cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35797cztM0_level2_quad_clean.evt
Size (bytes)515,937,600104,837,760
Size492.0 MB 100.0 MB
Events in quadrant A3,556,554709,962
Events in quadrant B3,977,379698,980
Events in quadrant C3,549,717671,649
Events in quadrant D4,115,993656,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144673
B0157564
C0142442
D0163152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6290380.604134%
B62891622.575926%
C62901131.796502%
D62901672.655008%

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 10266 6292 22 22 0.21% 0.35%
B 10266 6292 112 112 1.09% 1.78%
C 10266 6292 90 90 0.88% 1.43%
D 10266 6292 161 161 1.57% 2.56%

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 15 169 286732 1793.5 799 787 159.4
A 10 83 172357 1076.12 799 787 159.4
A 13 6 12248 71.89 799 787 159.4
B 5 172 271527 1867.15 776 759 145.0
B 5 255 261299 1796.62 776 759 145.0
B 0 229 182541 1253.52 776 759 145.0
C 0 10 319605 1861.27 746 750 171.3
C 15 214 262748 1529.38 746 750 171.3
C 0 207 52553 302.39 746 750 171.3
D 13 249 424067 2280.52 762 741 185.6
D 8 195 210361 1129.26 762 741 185.6
D 12 6 192989 1035.67 762 741 185.6

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