ASTROSAT CZTI

Data Quality Report

Orbit 20191216_A07_054T01_9000003370_level2

Creation date: 2019-12-18T10:36:54.937522
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/AS1A07_054T01_9000003370cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003370cztM0_level2_quad_clean.evt
Size (bytes)2,920,040,6401,567,336,320
Size2.7 GB 1.5 GB
Events in quadrant A17,058,37710,907,852
Events in quadrant B17,605,42010,846,096
Events in quadrant C16,094,80510,268,279
Events in quadrant D32,280,61410,028,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01625940
B01653420
C01626410
D02183660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A791755180.654247%
B791757630.963688%
C7917510171.284496%
D7917541675.263025%

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 91760 79174 0 0 0.00% 0.00%
B 91760 79175 3 3 0.00% 0.00%
C 91760 79175 1 1 0.00% 0.00%
D 91760 79173 536 536 0.58% 0.68%

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 13 254 139692 143.23 4364 4302 945.3
A 13 252 133462 136.64 4364 4302 945.3
A 11 47 94501 95.42 4364 4302 945.3
B 0 190 313142 380.18 4323 4234 812.5
B 0 230 211765 255.41 4323 4234 812.5
B 0 229 131497 156.62 4323 4234 812.5
C 0 207 95796 95.11 4102 4097 964.2
C 10 22 88344 87.38 4102 4097 964.2
C 2 16 73182 71.65 4102 4097 964.2
D 1 52 12655119 12832.9 4189 4059 985.8
D 13 172 744434 751.02 4189 4059 985.8
D 2 152 664169 669.6 4189 4059 985.8

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