ASTROSAT CZTI

Data Quality Report

Orbit 21783

Creation date: 2024-06-27T18:32:05.263915
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/AS1A07_005T01_9000003224_21783cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21783cztM0_level2_quad_clean.evt
Size (bytes)3,417,704,640367,911,360
Size3.2 GB 350.9 MB
Events in quadrant A15,531,6752,407,398
Events in quadrant B17,035,2832,447,535
Events in quadrant C15,664,3102,300,404
Events in quadrant D53,150,7151,815,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0664166
B0703206
C0663086
D01795176

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06420
B06420
C06420
D06420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315673531.118256%
B315675251.663129%
C315674711.492064%
D315671567049.640447%

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 37527 31569 1 1 0.00% 0.00%
B 37527 31569 103 103 0.27% 0.33%
C 37527 31570 1 1 0.00% 0.00%
D 37527 31567 13838 13838 36.87% 43.84%

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 13 254 59387 69.27 4021 3936 800.5
A 0 226 35274 39.15 4021 3936 800.5
A 3 137 32208 35.32 4021 3936 800.5
B 3 64 619590 822.46 4020 3934 748.6
B 0 190 230212 302.29 4020 3934 748.6
B 0 230 160740 209.48 4020 3934 748.6
C 14 238 607818 673.26 3851 3873 897.0
C 13 61 27113 25.91 3851 3873 897.0
C 10 23 16280 13.83 3851 3873 897.0
D 7 238 37618160 48566.45 3186 3094 774.5
D 1 52 1661403 2141.11 3186 3094 774.5
D 2 136 546759 701.95 3186 3094 774.5

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