ASTROSAT CZTI

Data Quality Report

Orbit 20220514_A10_071T19_9000005144_level2

Creation date: 2022-05-20T13:15:20.998532
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_071T19_9000005144cztM0_level2_bc.evt modeM0/AS1A10_071T19_9000005144cztM0_level2_quad_clean.evt
Size (bytes)1,972,290,240499,921,920
Size1.8 GB 476.8 MB
Events in quadrant A18,540,0033,011,839
Events in quadrant B10,706,5353,346,927
Events in quadrant C10,087,1863,287,934
Events in quadrant D17,867,3902,943,935

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01295100
B0868410
C0806100
D01223220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07600
B07600
C07600
D07600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37099663817.892666%
B370987512.024368%
C370993731.005418%
D37098436811.774220%

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 51084 37107 366 366 0.72% 0.99%
B 51083 37097 86 86 0.17% 0.23%
C 51083 37100 31 31 0.06% 0.08%
D 51083 37093 107 107 0.21% 0.29%

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 15 169 10581262 26418.7 1820 1794 400.5
A 10 83 738839 1840.52 1820 1794 400.5
A 13 6 105775 259.66 1820 1794 400.5
B 5 172 1452685 3759.23 1978 1942 385.9
B 5 255 720881 1862.95 1978 1942 385.9
B 4 232 245771 631.82 1978 1942 385.9
C 15 214 1464610 3290.34 1929 1912 444.5
C 0 10 670640 1504.3 1929 1912 444.5
C 0 207 332347 743.31 1929 1912 444.5
D 2 250 3587109 8164.98 1851 1798 439.1
D 7 223 3285473 7478.05 1851 1798 439.1
D 13 249 964571 2192.56 1851 1798 439.1

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