ASTROSAT CZTI

Data Quality Report

Orbit 20191224_T03_170T01_9000003388_level2

Creation date: 2019-12-26T09:48:32.611559
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/AS1T03_170T01_9000003388cztM0_level2_bc.evt modeM0/AS1T03_170T01_9000003388cztM0_level2_quad_clean.evt
Size (bytes)2,739,686,400927,921,600
Size2.6 GB 884.9 MB
Events in quadrant A15,338,3315,951,044
Events in quadrant B15,892,4476,042,149
Events in quadrant C15,796,9735,793,865
Events in quadrant D31,136,4805,479,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014360
B014360
C014360
D014360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470180
B01487280
C01506930
D02050720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705788021.136331%
B705789161.297855%
C7057812071.710165%
D7057840655.759585%

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 82144 70580 7 7 0.01% 0.01%
B 82144 70579 5 5 0.01% 0.01%
C 82144 70580 28 28 0.03% 0.04%
D 82144 70574 637 637 0.78% 0.90%

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 23 502521 608.46 3800 3733 819.8
A 13 254 114876 135.58 3800 3733 819.8
A 4 2 101385 119.12 3800 3733 819.8
B 0 190 294931 405.01 3851 3758 718.9
B 3 64 162504 220.81 3851 3758 718.9
B 0 189 132550 179.14 3851 3758 718.9
C 6 80 1236223 1422.99 3687 3671 866.2
C 7 247 225409 256.0 3687 3671 866.2
C 10 9 141727 159.39 3687 3671 866.2
D 1 52 10471998 12151.02 3671 3541 861.5
D 7 238 1900921 2202.34 3671 3541 861.5
D 13 153 1537644 1780.67 3671 3541 861.5

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