ASTROSAT CZTI

Data Quality Report

Orbit 30935

Creation date: 2024-06-27T20:21:21.487392
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_058T10_9000004472_30935cztM0_level2.evt modeM0/AS1A10_058T10_9000004472_30935cztM0_level2_quad_clean.evt
Size (bytes)549,164,16099,734,400
Size523.7 MB 95.1 MB
Events in quadrant A3,392,677653,381
Events in quadrant B5,352,334647,804
Events in quadrant C3,732,711624,179
Events in quadrant D3,694,811623,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014647329
B021318638
C015568351
D015569306

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01406
B01406
C01400
D01402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6778650.958985%
B67261872.780256%
C67752804.132841%
D6800490.720588%

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 8013 6917 0 0 0.00% 0.00%
B 8013 6903 1 1 0.01% 0.01%
C 8012 6915 6 6 0.07% 0.09%
D 8012 6925 17 17 0.21% 0.25%

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 12661 67.25 878 859 175.5
A 3 137 8405 43.0 878 859 175.5
A 0 226 7486 37.76 878 859 175.5
B 6 159 1839719 11259.84 864 845 163.3
B 0 190 58868 355.29 864 845 163.3
B 12 16 26883 159.44 864 845 163.3
C 14 238 185177 934.06 840 848 197.3
C 0 10 91444 459.08 840 848 197.3
C 14 254 71711 359.09 840 848 197.3
D 8 195 204223 1005.28 858 838 202.3
D 2 250 146814 721.52 858 838 202.3
D 12 233 64167 313.02 858 838 202.3

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