ASTROSAT CZTI

Data Quality Report

Orbit 20190605_A05_160T01_9000002970_level2

Creation date: 2019-06-08T13:12:28.163413
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/AS1A05_160T01_9000002970cztM0_level2_bc.evt modeM0/AS1A05_160T01_9000002970cztM0_level2_quad_clean.evt
Size (bytes)5,869,840,3201,811,998,080
Size5.5 GB 1.7 GB
Events in quadrant A45,774,33511,229,704
Events in quadrant B33,739,35111,741,956
Events in quadrant C44,109,59511,066,117
Events in quadrant D44,384,65211,022,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029180
B029180
C029180
D029180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03887500
B03148940
C03633920
D03485530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143348124768.703295%
B14334824761.727265%
C14334862124.333510%
D14334850033.490108%

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 165807 143313 93 93 0.06% 0.06%
B 165807 143325 13 13 0.01% 0.01%
C 165807 143324 92 92 0.06% 0.06%
D 165808 143335 923 923 0.56% 0.64%

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 14 238 16007494 9781.49 7555 7413 1635.8
A 5 16 436172 262.12 7555 7413 1635.8
A 3 1 175313 102.64 7555 7413 1635.8
B 7 220 1195537 812.99 7881 7689 1461.1
B 0 189 418743 281.33 7881 7689 1461.1
B 0 197 403513 270.91 7881 7689 1461.1
C 3 233 7588326 4368.29 7443 7414 1735.4
C 4 254 4854529 2793.02 7443 7414 1735.4
C 9 221 2540578 1459.67 7443 7414 1735.4
D 1 52 7302182 4113.78 7696 7422 1773.2
D 1 20 2123022 1193.06 7696 7422 1773.2
D 7 38 1515779 850.62 7696 7422 1773.2

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