ASTROSAT CZTI

Data Quality Report

Orbit 26145

Creation date: 2024-06-27T19:25:21.100237
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/AS1A09_138T04_9000003776_26145cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26145cztM0_level2_quad_clean.evt
Size (bytes)504,279,36096,534,720
Size480.9 MB 92.1 MB
Events in quadrant A3,576,344608,697
Events in quadrant B3,576,733627,493
Events in quadrant C3,521,614596,397
Events in quadrant D4,107,084588,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150450
B0150180
C0149080
D0169110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72181592.202826%
B72191812.507272%
C72191802.493420%
D72182673.699086%

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 7623 7218 0 0 0.00% 0.00%
B 7624 7219 5 5 0.07% 0.07%
C 7624 7219 0 0 0.00% 0.00%
D 7623 7218 152 152 1.99% 2.11%

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 13 132167 723.24 893 871 181.5
A 13 254 10353 52.23 893 871 181.5
A 3 137 8267 40.74 893 871 181.5
B 5 172 49942 287.6 884 862 170.7
B 0 190 25062 141.81 884 862 170.7
B 12 111 20716 116.34 884 862 170.7
C 14 238 138152 680.2 858 863 201.8
C 3 233 16548 77.71 858 863 201.8
C 2 16 11919 54.78 858 863 201.8
D 1 52 633014 3065.68 867 846 206.2
D 1 3 121359 584.42 867 846 206.2
D 12 233 37105 175.84 867 846 206.2

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