ASTROSAT CZTI

Data Quality Report

Orbit 21062

Creation date: 2024-06-27T18:23:06.084125
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/AS1A05_101T03_9000003112_21062cztM0_level2.evt modeM0/AS1A05_101T03_9000003112_21062cztM0_level2_quad_clean.evt
Size (bytes)1,079,421,120200,825,280
Size1.0 GB 191.5 MB
Events in quadrant A7,314,2111,266,886
Events in quadrant B7,848,0101,314,969
Events in quadrant C7,520,9091,271,658
Events in quadrant D9,000,7551,201,306

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310463
B0321963
C0311383
D0364143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14889670.449997%
B148901661.114842%
C148901440.967092%
D148902721.826729%

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 18869 14892 1 1 0.01% 0.01%
B 18870 14893 29 29 0.15% 0.19%
C 18870 14893 0 0 0.00% 0.00%
D 18870 14893 255 255 1.35% 1.71%

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 12 96 30317 76.39 1891 1856 372.6
A 13 254 19792 48.14 1891 1856 372.6
A 0 226 16191 38.48 1891 1856 372.6
B 7 220 115987 323.79 1913 1869 352.4
B 0 219 115075 321.2 1913 1869 352.4
B 3 64 73540 203.35 1913 1869 352.4
C 14 238 294845 682.38 1852 1866 429.3
C 13 61 12780 25.42 1852 1866 429.3
C 3 9 9952 18.83 1852 1866 429.3
D 7 238 790278 1788.35 1832 1785 440.9
D 1 52 659119 1490.87 1832 1785 440.9
D 9 1 468896 1059.43 1832 1785 440.9

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