ASTROSAT CZTI

Data Quality Report

Orbit 20866

Creation date: 2024-06-27T18:18:29.483500
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_229T02_9000003060_20866cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20866cztM0_level2_quad_clean.evt
Size (bytes)1,775,439,360204,408,000
Size1.7 GB 194.9 MB
Events in quadrant A7,540,2941,384,958
Events in quadrant B7,933,3411,412,337
Events in quadrant C7,719,6371,336,132
Events in quadrant D29,483,464937,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370093691
B0378603821
C0372163762
D011343915153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037139
B037442
C037226
D037135

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191
B0180
C0180
D0191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16335790.483624%
B163301260.771586%
C163281661.016659%
D15699855054.462068%

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 19424 16927 0 0 0.00% 0.00%
B 19432 16882 13 13 0.07% 0.08%
C 19415 16865 0 0 0.00% 0.00%
D 19393 16306 7843 7843 40.44% 48.10%

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 0 226 16751 37.67 1959 1920 393.7
A 3 137 16478 36.98 1959 1920 393.7
A 12 194 13629 29.74 1959 1920 393.7
B 0 189 111654 295.06 1958 1912 371.9
B 12 111 46905 120.97 1958 1912 371.9
B 11 111 41447 106.3 1958 1912 371.9
C 14 238 293669 667.28 1874 1887 437.3
C 3 233 79648 177.83 1874 1887 437.3
C 9 54 23247 48.85 1874 1887 437.3
D 1 52 21912246 68702.02 1328 1293 318.9
D 1 239 1840616 5767.22 1328 1293 318.9
D 7 223 294021 917.85 1328 1293 318.9

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