ASTROSAT CZTI

Data Quality Report

Orbit 20191203_A07_049T01_9000003358_level2

Creation date: 2019-12-05T10:43:19.250439
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_049T01_9000003358cztM0_level2_bc.evt modeM0/AS1A07_049T01_9000003358cztM0_level2_quad_clean.evt
Size (bytes)2,344,550,400952,104,960
Size2.2 GB 908.0 MB
Events in quadrant A14,703,7836,137,930
Events in quadrant B15,339,7846,190,876
Events in quadrant C14,386,8375,870,424
Events in quadrant D21,724,4045,762,364

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014460
B014460
C014460
D014460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470250
B01492010
C01476570
D01677710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A711525950.836238%
B711527561.062514%
C711529121.281763%
D7115213671.921239%

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 82588 71152 0 0 0.00% 0.00%
B 82588 71153 6 6 0.01% 0.01%
C 82588 71152 0 0 0.00% 0.00%
D 82588 71153 246 246 0.30% 0.35%

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 109075 128.12 3802 3735 822.2
A 11 47 25947 27.01 3802 3735 822.2
A 0 226 24631 25.41 3802 3735 822.2
B 0 230 127684 172.31 3829 3742 719.3
B 0 229 112455 151.13 3829 3742 719.3
B 5 172 100535 134.56 3829 3742 719.3
C 10 222 214465 246.19 3635 3619 856.5
C 10 22 96864 108.87 3635 3619 856.5
C 0 10 47650 51.41 3635 3619 856.5
D 1 52 4457387 5089.15 3731 3591 875.2
D 1 239 574636 652.51 3731 3591 875.2
D 7 238 534047 606.13 3731 3591 875.2

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