ASTROSAT CZTI

Data Quality Report

Orbit 12422

Creation date: 2024-06-27T16:27:06.340652
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_085T02_9000001846_12422cztM0_level2.evt modeM0/AS1A04_085T02_9000001846_12422cztM0_level2_quad_clean.evt
Size (bytes)567,576,00080,133,120
Size541.3 MB 76.4 MB
Events in quadrant A4,503,515486,736
Events in quadrant B4,360,606493,714
Events in quadrant C3,617,768485,018
Events in quadrant D4,226,627467,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179072
B0174061
C0154861
D0173961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70852213.119266%
B70853745.278758%
C70851932.724065%
D70852954.163726%

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 7087 39 39 0.52% 0.55%
B 7501 7087 171 171 2.28% 2.41%
C 7501 7087 49 49 0.65% 0.69%
D 7501 7087 156 156 2.08% 2.20%

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 13 251 777550 4400.36 859 839 176.5
A 1 162 107980 606.99 859 839 176.5
A 12 189 88453 496.37 859 839 176.5
B 4 239 633458 3834.98 849 828 165.0
B 3 64 152913 921.93 849 828 165.0
B 0 190 84023 504.33 849 828 165.0
C 15 208 353778 1789.71 835 838 197.2
C 13 61 6064 26.5 835 838 197.2
C 8 128 3809 15.07 835 838 197.2
D 1 52 746304 3726.52 831 806 200.1
D 2 14 147956 735.56 831 806 200.1
D 7 71 57059 281.19 831 806 200.1

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