ASTROSAT CZTI

Data Quality Report

Orbit 20190912_T03_140T01_9000003160_level2

Creation date: 2019-09-17T15:33:22.943525
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_140T01_9000003160cztM0_level2_bc.evt modeM0/AS1T03_140T01_9000003160cztM0_level2_quad_clean.evt
Size (bytes)11,187,898,5603,556,722,240
Size10.4 GB 3.3 GB
Events in quadrant A60,337,18223,088,991
Events in quadrant B60,059,71323,223,094
Events in quadrant C63,835,87422,402,429
Events in quadrant D136,575,64020,864,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054100
B054100
C054100
D054100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05619800
B05645120
C05856500
D08175010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04130
B04130
C04130
D04130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26499023460.885316%
B26498831961.206092%
C26498949861.881588%
D264989202947.658431%

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 307169 264965 0 0 0.00% 0.00%
B 307168 264960 77 77 0.03% 0.03%
C 307169 264959 31 31 0.01% 0.01%
D 307169 264954 7790 7790 2.54% 2.94%

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 5 168 3305703 1052.58 14477 14235 3127.1
A 11 47 943085 297.04 14477 14235 3127.1
A 13 254 390927 120.46 14477 14235 3127.1
B 0 230 865405 312.44 14537 14199 2724.4
B 3 64 619641 222.23 14537 14199 2724.4
B 0 190 594504 213.0 14537 14199 2724.4
C 3 233 10209898 3165.46 13829 13798 3221.0
C 10 91 255397 75.01 13829 13798 3221.0
C 0 236 94520 25.06 13829 13798 3221.0
D 12 235 43876778 13777.54 13808 13341 3183.7
D 1 52 12682674 3979.45 13808 13341 3183.7
D 1 20 9419798 2954.57 13808 13341 3183.7

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