ASTROSAT CZTI

Data Quality Report

Orbit 20220804_T05_044T01_9000005270_level2

Creation date: 2022-08-05T12:35:40.850284
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/AS1T05_044T01_9000005270cztM0_level2_bc.evt modeM0/AS1T05_044T01_9000005270cztM0_level2_quad_clean.evt
Size (bytes)1,001,615,040280,437,120
Size955.2 MB 267.4 MB
Events in quadrant A5,348,8561,876,352
Events in quadrant B8,230,5201,810,885
Events in quadrant C6,750,4211,801,197
Events in quadrant D8,700,3131,688,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422800
B0551360
C0468480
D0560230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0860
C0890
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19106510.266932%
B1910710965.736118%
C190973942.063151%
D190969504.974864%

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 28122 19120 3 3 0.01% 0.02%
B 28122 19118 242 242 0.86% 1.27%
C 28122 19111 106 106 0.38% 0.55%
D 28122 19110 103 103 0.37% 0.54%

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 804689 3490.34 1034 1018 230.3
A 11 254 401256 1738.23 1034 1018 230.3
A 13 248 62877 268.65 1034 1018 230.3
B 0 182 887723 4407.23 1007 986 201.2
B 5 184 675229 3351.1 1007 986 201.2
B 0 213 576240 2859.11 1007 986 201.2
C 15 214 776073 3410.91 985 982 227.2
C 0 207 590307 2593.42 985 982 227.2
C 0 10 470481 2066.1 985 982 227.2
D 12 235 1461623 6198.86 983 955 235.6
D 2 250 991519 4203.81 983 955 235.6
D 2 249 369405 1563.65 983 955 235.6

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