ASTROSAT CZTI

Data Quality Report

Orbit 20160328_T01_105T01_9000000402_level2

Creation date: 2017-10-26T19:39:23.901568
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/AS1T01_105T01_9000000402cztM0_level2.evt modeM0/AS1T01_105T01_9000000402cztM0_level2_quad_clean.evt
Size (bytes)1,741,685,760299,151,360
Size1.6 GB 285.3 MB
Events in quadrant A11,256,0551,824,172
Events in quadrant B14,962,8081,872,411
Events in quadrant C11,491,3101,877,116
Events in quadrant D13,360,7871,780,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0514090
B0616050
C0517800
D0575700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248064811.939047%
B248068713.511247%
C248063131.261792%
D248066692.696928%

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 26644 24809 0 0 0.00% 0.00%
B 26644 24809 201 201 0.75% 0.81%
C 26644 24809 9 9 0.03% 0.04%
D 26644 24809 290 290 1.09% 1.17%

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 3 1 69626 111.99 2908 2835 596.4
A 12 194 32218 49.27 2908 2835 596.4
A 0 226 30639 46.62 2908 2835 596.4
B 14 53 2731157 4862.37 2937 2857 561.1
B 7 205 757787 1345.43 2937 2857 561.1
B 3 0 68493 116.98 2937 2857 561.1
C 14 223 113547 165.88 2860 2875 667.2
C 2 53 85188 123.37 2860 2875 667.2
C 8 112 30730 41.75 2860 2875 667.2
D 2 184 1341554 2015.13 2810 2742 664.4
D 9 64 428756 641.22 2810 2742 664.4
D 2 136 280829 418.57 2810 2742 664.4

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