ASTROSAT CZTI

Data Quality Report

Orbit 47884

Creation date: 2024-08-05T14:56:01.362878
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_053T01_9000006370_47884cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47884cztM0_level2_quad_clean.evt
Size (bytes)527,088,960111,908,160
Size502.7 MB 106.7 MB
Events in quadrant A7,048,348734,247
Events in quadrant B3,459,639755,533
Events in quadrant C3,159,778751,704
Events in quadrant D5,282,437643,993

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259681
B0155141
C0148722
D0209651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72243284.540421%
B72243094.277409%
C72231692.339748%
D72246679.233112%

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 7649 7225 6 6 0.08% 0.08%
B 7649 7225 72 72 0.94% 1.00%
C 7648 7224 6 6 0.08% 0.08%
D 7649 7225 505 505 6.60% 6.99%

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 3967395 24426.82 783 765 162.4
A 7 3 50481 306.16 783 765 162.4
A 3 137 9308 52.61 783 765 162.4
B 5 255 235630 1519.86 782 754 154.5
B 4 171 62670 400.65 782 754 154.5
B 4 21 32610 206.14 782 754 154.5
C 12 2 42827 225.36 794 795 186.5
C 14 254 11819 59.11 794 795 186.5
C 14 67 5726 26.44 794 795 186.5
D 2 37 1952224 10022.18 775 751 194.7
D 2 249 118664 605.57 775 751 194.7
D 2 165 110452 563.39 775 751 194.7

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