ASTROSAT CZTI

Data Quality Report

Orbit 20200821_A09_120T02_9000003834_level2

Creation date: 2021-01-09T03:56:16.032459
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/AS1A09_120T02_9000003834cztM0_level2_bc.evt modeM0/AS1A09_120T02_9000003834cztM0_level2_quad_clean.evt
Size (bytes)170,654,40063,449,280
Size162.7 MB 60.5 MB
Events in quadrant A668,452441,145
Events in quadrant B683,874446,959
Events in quadrant C738,933426,847
Events in quadrant D2,856,256383,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062870
B063070
C065010
D0139860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A312630.095969%
B312640.127959%
C3126130.415867%
D312650916.282790%

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 3126 3126 0 0 0.00% 0.00%
B 3126 3126 0 0 0.00% 0.00%
C 3126 3126 0 0 0.00% 0.00%
D 3126 3126 164 164 5.25% 5.25%

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 4762 107.22 173 170 42.8
A 0 226 1083 21.32 173 170 42.8
A 12 194 1024 19.94 173 170 42.8
B 0 219 9781 251.49 174 171 38.2
B 0 229 7140 182.37 174 171 38.2
B 3 112 2159 52.02 174 171 38.2
C 3 233 94277 2142.65 166 166 43.9
C 4 254 4102 89.61 166 166 43.9
C 13 61 967 18.24 166 166 43.9
D 1 52 1538213 37927.5 157 152 40.6
D 7 80 533016 13140.04 157 152 40.6
D 12 233 166485 4101.64 157 152 40.6

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