ASTROSAT CZTI

Data Quality Report

Orbit 44830

Creation date: 2024-06-27T23:06:58.557417
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/AS1A13_017T01_9000006028_44830cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44830cztM0_level2_quad_clean.evt
Size (bytes)1,261,244,160289,137,600
Size1.2 GB 275.7 MB
Events in quadrant A13,700,7991,921,279
Events in quadrant B9,475,6081,979,256
Events in quadrant C8,675,0031,917,190
Events in quadrant D13,373,9551,634,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0572822
B0415472
C0399627
D05304010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188895102.699984%
B188896133.245275%
C188882701.429479%
D1888714557.703712%

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 19914 18891 17 17 0.09% 0.09%
B 19914 18891 191 191 0.96% 1.01%
C 19915 18891 63 63 0.32% 0.33%
D 19914 18890 1021 1021 5.13% 5.40%

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 5394583 12341.67 2092 2046 436.9
A 13 248 108166 242.87 2092 2046 436.9
A 7 3 43024 93.78 2092 2046 436.9
B 5 172 542828 1329.75 2066 1995 406.7
B 5 255 214023 521.31 2066 1995 406.7
B 4 171 135537 328.34 2066 1995 406.7
C 14 254 344162 713.32 2042 2050 479.6
C 15 158 128730 264.14 2042 2050 479.6
C 1 3 73561 149.1 2042 2050 479.6
D 1 52 1838853 3702.99 1979 1917 496.1
D 5 235 1683407 3389.64 1979 1917 496.1
D 2 249 557606 1120.19 1979 1917 496.1

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