ASTROSAT CZTI

Data Quality Report

Orbit 14782

Creation date: 2024-06-27T16:59:38.315023
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/AS1A04_022T02_9000002184_14782cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14782cztM0_level2_quad_clean.evt
Size (bytes)591,750,72089,334,720
Size564.3 MB 85.2 MB
Events in quadrant A4,322,222559,455
Events in quadrant B5,134,654547,038
Events in quadrant C4,398,393551,070
Events in quadrant D3,575,504543,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176402
B0201691
C0181261
D0156701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72402783.839779%
B72404135.704420%
C7240851.174033%
D72401161.602210%

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 7501 7242 179 179 2.39% 2.47%
B 7501 7242 126 126 1.68% 1.74%
C 7501 7242 1 1 0.01% 0.01%
D 7501 7242 57 57 0.76% 0.79%

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 14 237 895950 5053.13 864 845 177.1
A 12 189 90402 505.58 864 845 177.1
A 0 226 7971 40.23 864 845 177.1
B 3 64 1063531 6514.4 860 839 163.1
B 0 219 477427 2921.53 860 839 163.1
B 0 229 48481 292.05 860 839 163.1
C 3 233 1062051 5416.88 846 849 195.9
C 7 247 12278 58.34 846 849 195.9
C 3 232 11678 55.28 846 849 195.9
D 15 0 145188 688.21 854 827 209.8
D 12 233 102515 484.78 854 827 209.8
D 2 234 30332 140.66 854 827 209.8

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