ASTROSAT CZTI

Data Quality Report

Orbit 31355

Creation date: 2024-06-27T20:27:11.237129
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_101T01_9000004546_31355cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31355cztM0_level2_quad_clean.evt
Size (bytes)560,718,72079,125,120
Size534.7 MB 75.5 MB
Events in quadrant A3,440,904499,756
Events in quadrant B5,446,573493,085
Events in quadrant C3,647,216466,735
Events in quadrant D3,995,242471,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139231
B0208371
C0146251
D0160281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66631111.665916%
B66632173.256791%
C66642563.841537%
D66641141.710684%

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 7698 6664 0 0 0.00% 0.00%
B 7698 6663 23 23 0.30% 0.35%
C 7699 6665 33 33 0.43% 0.50%
D 7699 6665 16 16 0.21% 0.24%

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 15590 82.66 891 876 178.0
A 3 137 8462 42.62 891 876 178.0
A 0 226 7717 38.43 891 876 178.0
B 6 159 1756187 10616.46 862 841 165.3
B 0 190 178183 1072.58 862 841 165.3
B 10 247 90231 540.64 862 841 165.3
C 3 233 178858 935.27 825 832 190.3
C 14 238 155330 811.66 825 832 190.3
C 0 10 29755 151.95 825 832 190.3
D 8 195 606699 3017.98 856 837 200.8
D 12 79 78211 385.42 856 837 200.8
D 2 250 54036 265.0 856 837 200.8

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