ASTROSAT CZTI

Data Quality Report

Orbit 36508

Creation date: 2022-06-29T19:41:57.278689
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T05_035T01_9000005214_36508cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36508cztM0_level2_quad_clean.evt
Size (bytes)468,826,56098,582,400
Size447.1 MB 94.0 MB
Events in quadrant A2,793,762680,844
Events in quadrant B3,330,816676,668
Events in quadrant C2,903,189669,677
Events in quadrant D4,821,447597,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113113
B0130712
C0115862
D0177772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515290.174689%
B51521482.872671%
C5152420.815217%
D515256210.908385%

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 9398 5154 1 1 0.01% 0.02%
B 9398 5154 94 94 1.00% 1.82%
C 9398 5154 28 28 0.30% 0.54%
D 9398 5154 457 457 4.86% 8.87%

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 10 83 199514 1497.66 664 654 132.8
A 13 6 11630 82.66 664 654 132.8
A 13 254 8774 61.15 664 654 132.8
B 5 172 419075 3421.26 644 630 122.3
B 5 255 113396 921.99 644 630 122.3
B 0 189 87187 707.7 644 630 122.3
C 15 214 225050 1524.32 635 641 147.2
C 0 10 188082 1273.22 635 641 147.2
C 10 49 9928 63.08 635 641 147.2
D 12 227 1393157 9387.71 613 598 148.3
D 13 249 264288 1777.62 613 598 148.3
D 12 235 165982 1114.91 613 598 148.3

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