ASTROSAT CZTI

Data Quality Report

Orbit 20210310_A10_102T09_9000004242_level2

Creation date: 2021-03-15T21:20:25.157701
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/AS1A10_102T09_9000004242cztM0_level2_bc.evt modeM0/AS1A10_102T09_9000004242cztM0_level2_quad_clean.evt
Size (bytes)4,358,347,200749,848,320
Size4.1 GB 715.1 MB
Events in quadrant A13,646,7694,918,308
Events in quadrant B13,940,2924,998,004
Events in quadrant C17,221,3014,722,411
Events in quadrant D82,915,1153,752,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012700
B012740
C012740
D012700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01319000
B01334560
C01465520
D03604650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296512962.058286%
B6296815062.391691%
C6295223373.712352%
D627982093533.337049%

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 82073 63066 2 2 0.00% 0.00%
B 82073 63056 12 12 0.01% 0.02%
C 82073 63047 0 0 0.00% 0.00%
D 82073 62857 8381 8381 10.21% 13.33%

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 12 96 126011 164.08 3465 3403 747.2
A 13 254 111761 145.01 3465 3403 747.2
A 0 13 54620 68.54 3465 3403 747.2
B 0 190 118271 174.59 3509 3431 657.8
B 0 230 90710 132.69 3509 3431 657.8
B 0 156 88599 129.48 3509 3431 657.8
C 3 233 4227623 5420.0 3293 3282 779.4
C 7 247 144662 181.4 3293 3282 779.4
C 2 114 124736 155.83 3293 3282 779.4
D 8 195 50902421 75291.05 2930 2835 676.0
D 1 52 10540326 15587.13 2930 2835 676.0
D 7 80 5558654 8218.21 2930 2835 676.0

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