ASTROSAT CZTI

Data Quality Report

Orbit 20414

Creation date: 2024-06-27T18:15:07.830148
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_140T01_9000003016_20414cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20414cztM0_level2_quad_clean.evt
Size (bytes)486,515,520101,954,880
Size464.0 MB 97.2 MB
Events in quadrant A3,431,441665,828
Events in quadrant B3,642,899663,512
Events in quadrant C3,435,909637,766
Events in quadrant D3,746,972631,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145601
B0152351
C0145971
D0158911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70172193.120992%
B70182543.619265%
C70182583.676261%
D70182763.932744%

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 7072 7018 0 0 0.00% 0.00%
B 7073 7019 1 1 0.01% 0.01%
C 7073 7019 0 0 0.00% 0.00%
D 7073 7019 44 44 0.62% 0.63%

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 8 205 28128 152.78 882 864 178.4
A 11 29 8195 41.08 882 864 178.4
A 0 226 7555 37.5 882 864 178.4
B 10 245 166081 981.56 867 843 168.3
B 0 189 42893 249.79 867 843 168.3
B 12 111 20653 117.68 867 843 168.3
C 14 238 131998 659.54 841 847 198.9
C 7 220 7884 35.39 841 847 198.9
C 3 233 6698 29.42 841 847 198.9
D 13 153 275898 1302.4 856 832 211.2
D 1 52 223569 1054.63 856 832 211.2
D 2 234 32308 149.03 856 832 211.2

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