ASTROSAT CZTI

Data Quality Report

Orbit 12539

Creation date: 2024-06-27T16:28:53.256473
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_130T01_9000001856_12539cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12539cztM0_level2_quad_clean.evt
Size (bytes)550,200,96081,368,640
Size524.7 MB 77.6 MB
Events in quadrant A4,088,592481,896
Events in quadrant B4,051,213487,027
Events in quadrant C3,719,441481,751
Events in quadrant D4,268,356465,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169883
B0171282
C0163852
D0179472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78853063.880786%
B78853594.552949%
C78851371.737476%
D78852072.625238%

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 8276 7888 0 0 0.00% 0.00%
B 8276 7887 5 5 0.06% 0.06%
C 8276 7888 0 0 0.00% 0.00%
D 8276 7888 58 58 0.70% 0.74%

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 1 162 138410 699.33 960 938 196.6
A 1 178 81176 408.18 960 938 196.6
A 1 161 67402 338.11 960 938 196.6
B 4 239 239846 1280.99 961 937 186.5
B 0 205 37777 197.53 961 937 186.5
B 12 111 22258 114.32 961 937 186.5
C 3 0 30905 135.95 943 945 220.4
C 13 61 7009 27.52 943 945 220.4
C 8 128 3928 13.53 943 945 220.4
D 1 52 345695 1532.85 936 910 224.9
D 13 104 150578 665.4 936 910 224.9
D 8 195 109158 481.25 936 910 224.9

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