ASTROSAT CZTI

Data Quality Report

Orbit 17797

Creation date: 2024-06-27T17:41:00.757479
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/AS1A05_015T01_9000002650_17797cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17797cztM0_level2_quad_clean.evt
Size (bytes)1,293,180,480204,442,560
Size1.2 GB 195.0 MB
Events in quadrant A8,393,3761,256,763
Events in quadrant B8,988,4421,267,409
Events in quadrant C8,933,0481,217,661
Events in quadrant D11,617,1231,193,562

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372133
B0383944
C0378123
D0469933

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182271680.921710%
B182272521.382564%
C182272631.442914%
D182278604.718275%

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 19977 18228 2 2 0.01% 0.01%
B 19977 18228 28 28 0.14% 0.15%
C 19977 18228 0 0 0.00% 0.00%
D 19977 18228 593 593 2.97% 3.25%

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 15 174 73966 163.55 2165 2113 439.3
A 0 226 18780 37.94 2165 2113 439.3
A 3 137 16410 32.54 2165 2113 439.3
B 0 229 163959 396.39 2158 2100 408.3
B 7 220 127428 306.93 2158 2100 408.3
B 0 219 98045 234.97 2158 2100 408.3
C 3 233 415304 848.99 2072 2085 486.7
C 14 238 317883 648.83 2072 2085 486.7
C 5 218 93950 188.74 2072 2085 486.7
D 7 238 2858264 5755.25 2067 2016 496.3
D 1 52 296850 594.08 2067 2016 496.3
D 1 255 230033 459.45 2067 2016 496.3

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