ASTROSAT CZTI

Data Quality Report

Orbit 20800

Creation date: 2024-06-27T18:19:43.840955
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_013T01_9000003070_20800cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20800cztM0_level2_quad_clean.evt
Size (bytes)470,715,840124,251,840
Size448.9 MB 118.5 MB
Events in quadrant A3,163,340864,882
Events in quadrant B3,592,693852,156
Events in quadrant C3,160,131825,161
Events in quadrant D3,942,401812,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130801
B0145291
C0132061
D0155981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5855761.298036%
B58561312.237022%
C58561212.066257%
D58561292.202869%

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 7220 5855 0 0 0.00% 0.00%
B 7221 5857 40 40 0.55% 0.68%
C 7221 5856 0 0 0.00% 0.00%
D 7221 5857 78 78 1.08% 1.33%

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 7230 39.82 823 810 161.2
A 3 137 5910 31.63 823 810 161.2
A 12 194 5894 31.54 823 810 161.2
B 0 182 184860 1254.47 799 783 146.7
B 7 220 124508 843.18 799 783 146.7
B 0 189 54713 367.53 799 783 146.7
C 14 238 126354 709.37 777 785 177.0
C 13 61 5424 26.21 777 785 177.0
C 7 247 4011 18.22 777 785 177.0
D 1 52 449852 2366.68 797 776 189.7
D 1 239 104326 545.72 797 776 189.7
D 9 1 99587 520.74 797 776 189.7

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