ASTROSAT CZTI

Data Quality Report

Orbit 31531

Creation date: 2024-06-27T20:29:38.044609
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/AS1A10_056T01_9000004598_31531cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31531cztM0_level2_quad_clean.evt
Size (bytes)1,474,231,680223,704,000
Size1.4 GB 213.3 MB
Events in quadrant A10,536,8421,404,204
Events in quadrant B13,392,0231,434,413
Events in quadrant C9,345,5881,378,853
Events in quadrant D10,211,8191,369,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427024
B0529374
C0383445
D0415704

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1723210005.803157%
B172336693.882087%
C172325703.307799%
D172324092.373491%

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 18917 17234 501 501 2.65% 2.91%
B 18918 17233 68 68 0.36% 0.39%
C 18917 17235 30 30 0.16% 0.17%
D 18917 17234 97 97 0.51% 0.56%

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 0 13 2575322 6240.93 2063 2014 412.3
A 13 254 30623 69.38 2063 2014 412.3
A 3 137 21556 47.39 2063 2014 412.3
B 6 159 4573719 11704.98 2064 2013 390.6
B 4 80 200968 509.39 2064 2013 390.6
B 0 229 141562 357.29 2064 2013 390.6
C 3 233 791874 1717.89 1991 2002 459.8
C 14 238 322556 697.17 1991 2002 459.8
C 10 22 198845 428.11 1991 2002 459.8
D 8 195 1832300 3832.43 2027 1973 477.6
D 12 233 337865 703.31 2027 1973 477.6
D 2 250 269173 559.48 2027 1973 477.6

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