ASTROSAT CZTI

Data Quality Report

Orbit 44899

Creation date: 2024-06-27T23:07:48.249034
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_017T02_9000006032_44899cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44899cztM0_level2_quad_clean.evt
Size (bytes)739,382,400127,776,960
Size705.1 MB 121.9 MB
Events in quadrant A6,462,703873,333
Events in quadrant B4,491,106898,889
Events in quadrant C5,628,376870,669
Events in quadrant D10,164,119665,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254252
B0188214
C0223753
D0358372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80612322.878055%
B80612052.543109%
C80611622.009676%
D8061167520.779060%

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 8076 8062 27 27 0.33% 0.33%
B 8077 8063 34 34 0.42% 0.42%
C 8076 8062 131 131 1.62% 1.62%
D 8076 8062 1327 1327 16.43% 16.46%

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 2640859 13367.04 934 912 197.5
A 13 248 160420 807.65 934 912 197.5
A 0 243 20794 100.67 934 912 197.5
B 15 36 177280 941.44 937 908 187.3
B 0 155 161518 857.31 937 908 187.3
B 5 255 117375 621.68 937 908 187.3
C 9 54 1802173 8320.89 920 924 216.5
C 15 208 108047 494.86 920 924 216.5
C 1 3 27483 122.69 920 924 216.5
D 1 52 1668456 7735.73 852 827 215.6
D 5 235 1557559 7221.31 852 827 215.6
D 13 187 1107982 5135.83 852 827 215.6

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