ASTROSAT CZTI

Data Quality Report

Orbit 32191

Creation date: 2024-06-27T20:37:25.119598
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_131T01_9000004690_32191cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32191cztM0_level2_quad_clean.evt
Size (bytes)589,187,520120,597,120
Size561.9 MB 115.0 MB
Events in quadrant A3,163,648811,914
Events in quadrant B5,268,754825,806
Events in quadrant C3,739,621810,822
Events in quadrant D5,250,416769,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135253
B0202702
C0151542
D0198862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226540.867331%
B62261862.987472%
C62263986.392547%
D62265218.368134%

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 7496 6228 0 0 0.00% 0.00%
B 7496 6228 35 35 0.47% 0.56%
C 7496 6227 49 49 0.65% 0.79%
D 7496 6228 327 327 4.36% 5.25%

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 6 12840 74.37 815 801 161.9
A 13 254 11622 66.84 815 801 161.9
A 3 137 7641 42.25 815 801 161.9
B 6 159 1797994 12007.0 814 796 149.7
B 5 172 126656 840.86 814 796 149.7
B 0 190 58446 385.15 814 796 149.7
C 0 10 255857 1423.49 783 790 179.2
C 14 238 171546 952.96 783 790 179.2
C 3 233 139332 773.18 783 790 179.2
D 8 195 1642925 8888.98 784 764 184.7
D 14 52 355688 1921.2 784 764 184.7
D 12 233 63696 340.65 784 764 184.7

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