ASTROSAT CZTI

Data Quality Report

Orbit 16994

Creation date: 2024-06-27T17:30:24.912919
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/AS1A05_143T01_9000002524_16994cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16994cztM0_level2_quad_clean.evt
Size (bytes)529,012,80080,282,880
Size504.5 MB 76.6 MB
Events in quadrant A2,852,515528,140
Events in quadrant B3,074,596539,787
Events in quadrant C3,396,941520,927
Events in quadrant D6,300,472433,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120512
B0126751
C0138051
D0226671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5853190.324620%
B5854410.700376%
C5854671.144517%
D5854108518.534335%

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 7144 5855 0 0 0.00% 0.00%
B 7145 5856 0 0 0.00% 0.00%
C 7145 5856 0 0 0.00% 0.00%
D 7145 5856 944 944 13.21% 16.12%

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 0 226 6692 39.85 742 727 149.7
A 12 194 5510 31.95 742 727 149.7
A 3 137 5016 28.65 742 727 149.7
B 15 35 44643 313.82 739 723 140.0
B 3 64 35047 245.26 739 723 140.0
B 0 229 34451 241.0 739 723 140.0
C 3 233 462668 2711.85 724 731 170.3
C 14 238 111566 650.67 724 731 170.3
C 13 61 5105 25.68 724 731 170.3
D 1 52 3711295 22873.11 668 650 162.2
D 2 152 25437 152.79 668 650 162.2
D 2 234 20960 125.19 668 650 162.2

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