ASTROSAT CZTI

Data Quality Report

Orbit 20190221_A05_094T01_9000002726_level2

Creation date: 2019-02-23T10:51:21.186443
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_094T01_9000002726cztM0_level2_bc.evt modeM0/AS1A05_094T01_9000002726cztM0_level2_quad_clean.evt
Size (bytes)2,578,124,160994,276,800
Size2.4 GB 948.2 MB
Events in quadrant A16,582,1326,399,517
Events in quadrant B16,768,5556,496,047
Events in quadrant C15,962,4666,121,817
Events in quadrant D23,546,2475,851,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015560
B015560
C015560
D015560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01605520
B01612420
C01601190
D01879910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7654311411.490665%
B7654312811.673569%
C7654315271.994957%
D7654338545.035078%

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 88304 76547 23 23 0.03% 0.03%
B 88304 76545 5 5 0.01% 0.01%
C 88304 76546 113 113 0.13% 0.15%
D 88304 76546 726 726 0.82% 0.95%

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 4 2 558161 631.35 3979 3896 877.9
A 15 174 417704 471.36 3979 3896 877.9
A 8 34 185461 206.82 3979 3896 877.9
B 3 64 409337 532.6 4033 3930 761.2
B 10 245 317686 412.19 4033 3930 761.2
B 0 189 121530 154.5 4033 3930 761.2
C 5 112 668934 735.39 3830 3810 904.4
C 3 233 426889 467.78 3830 3810 904.4
C 0 207 56048 57.76 3830 3810 904.4
D 1 52 6674581 7582.89 3788 3657 879.7
D 7 238 774595 876.33 3788 3657 879.7
D 12 110 408219 459.87 3788 3657 879.7

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