ASTROSAT CZTI

Data Quality Report

Orbit 20190518_T03_005T01_9000002928_level2

Creation date: 2019-05-20T10:19:51.608073
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/AS1T03_005T01_9000002928cztM0_level2_bc.evt modeM0/AS1T03_005T01_9000002928cztM0_level2_quad_clean.evt
Size (bytes)2,434,003,200933,396,480
Size2.3 GB 890.2 MB
Events in quadrant A15,536,7215,925,893
Events in quadrant B16,415,7946,011,817
Events in quadrant C15,166,4085,691,090
Events in quadrant D21,542,7385,562,972

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015100
B015100
C015100
D015100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01537580
B01570590
C01543810
D01730710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7409710811.458898%
B7409713851.869171%
C7409713341.800343%
D7409714441.948797%

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 86122 74091 9 9 0.01% 0.01%
B 86122 74088 19 19 0.02% 0.03%
C 86122 74088 0 0 0.00% 0.00%
D 86122 74088 173 173 0.20% 0.23%

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 13 252 233030 271.74 3917 3849 843.4
A 11 29 145595 168.07 3917 3849 843.4
A 13 254 62889 70.0 3917 3849 843.4
B 7 220 333313 441.81 3967 3869 745.7
B 0 198 223770 294.9 3967 3869 745.7
B 3 112 166121 217.59 3967 3869 745.7
C 3 233 508957 572.44 3761 3733 882.6
C 9 221 116819 128.13 3761 3733 882.6
C 4 175 31998 32.03 3761 3733 882.6
D 1 20 4016159 4521.25 3820 3680 887.5
D 1 52 1364158 1532.98 3820 3680 887.5
D 12 218 533757 597.29 3820 3680 887.5

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