ASTROSAT CZTI

Data Quality Report

Orbit 20210211_A10_094T21_9000004166_level2

Creation date: 2021-02-12T10:31:18.961303
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_094T21_9000004166cztM0_level2_bc.evt modeM0/AS1A10_094T21_9000004166cztM0_level2_quad_clean.evt
Size (bytes)219,067,20087,480,000
Size208.9 MB 83.4 MB
Events in quadrant A1,698,951593,737
Events in quadrant B966,811606,416
Events in quadrant C895,388576,841
Events in quadrant D2,757,576553,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114530
B093610
C093070
D0151440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4525681.502762%
B4525150.331492%
C4525260.574586%
D45251593.513812%

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 4523 4523 43 43 0.95% 0.95%
B 4524 4524 0 0 0.00% 0.00%
C 4523 4523 0 0 0.00% 0.00%
D 4524 4524 55 55 1.22% 1.22%

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 1 113 766832 14074.74 238 234 54.5
A 13 254 8664 154.77 238 234 54.5
A 6 16 5866 103.4 238 234 54.5
B 3 209 14550 293.82 241 235 48.7
B 5 255 8478 169.19 241 235 48.7
B 0 190 5977 117.86 241 235 48.7
C 2 114 8663 149.4 228 226 56.5
C 2 16 5777 98.29 228 226 56.5
C 15 208 3660 60.81 228 226 56.5
D 8 195 943824 17081.32 230 222 55.2
D 1 52 852538 15428.83 230 222 55.2
D 2 250 41450 746.32 230 222 55.2

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