ASTROSAT CZTI

Data Quality Report

Orbit 20160126_G02_020T01_9000000296_level2

Creation date: 2018-05-16T20:59:06.268294
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/AS1G02_020T01_9000000296cztM0_level2.evt modeM0/AS1G02_020T01_9000000296cztM0_level2_quad_clean.evt
Size (bytes)17,220,188,1601,442,499,840
Size16.0 GB 1.3 GB
Events in quadrant A130,831,5209,232,819
Events in quadrant B130,590,2219,348,117
Events in quadrant C125,053,4319,074,968
Events in quadrant D128,146,3938,851,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04632070
B04624720
C04458190
D04553830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020960
B020960
C020960
D020960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B1190
C1190
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1048886390.609221%
B1048945510.525292%
C1048945250.500505%
D10489419321.841859%

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 121327 104915 4552 4552 3.75% 4.34%
B 121327 104917 4538 4538 3.74% 4.33%
C 121327 104921 4171 4171 3.44% 3.98%
D 121327 104919 6253 6253 5.15% 5.96%

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 0 231 4216139 528.4 33049 33240 7916.2
A 15 236 137261 13.14 33049 33240 7916.2
A 10 2 126352 11.76 33049 33240 7916.2
B 0 220 217855 22.68 34279 34408 8086.9
B 4 216 190884 19.35 34279 34408 8086.9
B 0 234 165877 16.26 34279 34408 8086.9
C 8 208 3198777 366.62 31057 32120 8637.4
C 10 82 359243 37.87 31057 32120 8637.4
C 9 236 182999 17.47 31057 32120 8637.4
D 7 85 4811325 512.23 30247 31384 9331.7
D 13 169 1822495 191.94 30247 31384 9331.7
D 2 16 1784686 187.89 30247 31384 9331.7

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