ASTROSAT CZTI

Data Quality Report

Orbit 43540

Creation date: 2024-06-27T22:52:56.562457
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/AS1A12_102T01_9000005876_43540cztM0_level2.fits modeM0/AS1A12_102T01_9000005876_43540cztM0_level2_quad_clean.evt
Size (bytes)1,721,027,52075,885,120
Size1.6 GB 72.4 MB
Events in quadrant A14,108,816693,326
Events in quadrant B14,321,965625,907
Events in quadrant C19,933,768395,389
Events in quadrant D14,738,99725,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04737830
B04803227
C06449732
D04922922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7853399550.872278%
B7854440656.098803%
C7854758896.613191%
D78557855100.000000%

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 7898 7858 2939 2939 37.21% 37.40%
B 7897 7856 3776 3776 47.82% 48.07%
C 7897 7854 7256 7256 91.88% 92.39%
D 7897 7854 3683 3683 46.64% 46.89%

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 0 228 5952220 39783.95 723 707 149.6
A 0 227 2461046 16446.57 723 707 149.6
A 15 223 1077756 7199.72 723 707 149.6
B 3 42 9327915 75992.41 630 613 122.7
B 3 25 834345 6792.67 630 613 122.7
B 5 235 662160 5389.83 630 613 122.7
C 15 142 10054163 103865.62 412 414 96.8
C 15 158 2472411 25538.28 412 414 96.8
C 15 126 1936432 20001.07 412 414 96.8
D 4 216 6686863 185781.04 52 48 36.0
D 4 201 5102972 141775.5 52 48 36.0
D 4 215 454610 12629.18 52 48 36.0

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