ASTROSAT CZTI

Data Quality Report

Orbit 32071

Creation date: 2024-06-27T20:35:34.931184
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_109T01_9000004678_32071cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32071cztM0_level2_quad_clean.evt
Size (bytes)672,782,400104,302,080
Size641.6 MB 99.5 MB
Events in quadrant A3,284,504706,764
Events in quadrant B5,447,421696,768
Events in quadrant C5,220,377647,612
Events in quadrant D5,965,375634,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141222
B0210142
C0201012
D0225882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6784300.442217%
B67841171.724646%
C67835177.621996%
D67832553.759398%

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 7674 6784 0 0 0.00% 0.00%
B 7674 6784 22 22 0.29% 0.32%
C 7673 6783 213 213 2.78% 3.14%
D 7673 6784 151 151 1.97% 2.23%

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 15 174 20512 115.79 844 827 170.0
A 13 254 13614 75.22 844 827 170.0
A 13 6 8414 44.63 844 827 170.0
B 6 159 1871125 11619.32 832 812 161.0
B 10 245 146941 907.83 832 812 161.0
B 5 172 85379 525.37 832 812 161.0
C 3 233 1686071 9059.25 791 800 186.0
C 0 10 196963 1054.48 791 800 186.0
C 14 238 144122 770.43 791 800 186.0
D 8 195 2250854 11482.17 810 788 196.0
D 12 227 302942 1541.9 810 788 196.0
D 12 218 167937 852.97 810 788 196.0

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