ASTROSAT CZTI

Data Quality Report

Orbit 20181010_A05_069T01_9000002424_level2

Creation date: 2018-10-12T10:37:32.904486
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_069T01_9000002424cztM0_level2_bc.evt modeM0/AS1A05_069T01_9000002424cztM0_level2_quad_clean.evt
Size (bytes)2,392,136,640808,424,640
Size2.2 GB 771.0 MB
Events in quadrant A14,413,0305,092,757
Events in quadrant B17,076,4645,205,032
Events in quadrant C14,379,2074,936,216
Events in quadrant D22,092,8504,740,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01399730
B01499420
C01399160
D01656870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013360
B013360
C013360
D013360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580612931.964866%
B6580616542.513449%
C6580612831.949670%
D6580624043.653162%

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 76423 65809 19 19 0.02% 0.03%
B 76423 65804 63 63 0.08% 0.10%
C 76423 65806 6 6 0.01% 0.01%
D 76423 65805 215 215 0.28% 0.33%

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 946182 1287.38 3408 3347 732.4
A 9 143 236332 318.13 3408 3347 732.4
A 15 223 113266 150.09 3408 3347 732.4
B 10 16 737286 1131.99 3467 3375 648.3
B 15 35 672960 1032.78 3467 3375 648.3
B 0 198 443032 678.13 3467 3375 648.3
C 3 233 1247365 1617.06 3297 3279 769.3
C 7 247 217513 278.46 3297 3279 769.3
C 0 207 132572 168.05 3297 3279 769.3
D 1 20 4274761 5627.36 3305 3184 759.1
D 12 218 2129864 2801.68 3305 3184 759.1
D 7 38 799968 1049.68 3305 3184 759.1

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