ASTROSAT CZTI

Data Quality Report

Orbit 33426

Creation date: 2024-06-27T20:48:42.438525
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/AS1A11_046T04_9000004792_33426cztM0_level2.evt modeM0/AS1A11_046T04_9000004792_33426cztM0_level2_quad_clean.evt
Size (bytes)1,538,853,120288,092,160
Size1.4 GB 274.7 MB
Events in quadrant A8,974,5661,963,692
Events in quadrant B11,531,7531,935,444
Events in quadrant C8,645,9081,904,465
Events in quadrant D16,315,4541,757,997

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355845
B0451144
C0354204
D0606934

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16897140.082855%
B168978645.113334%
C16897800.473457%
D168979355.533527%

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 25177 16901 0 0 0.00% 0.00%
B 25177 16901 663 663 2.63% 3.92%
C 25177 16901 69 69 0.27% 0.41%
D 25177 16901 801 801 3.18% 4.74%

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 47 1189226 3040.64 2008 1973 390.5
A 13 254 30887 74.05 2008 1973 390.5
A 13 6 24354 57.32 2008 1973 390.5
B 5 172 2774728 7713.65 1951 1903 359.5
B 5 255 450703 1248.5 1951 1903 359.5
B 0 213 300068 829.46 1951 1903 359.5
C 15 214 730483 1698.8 1907 1918 428.9
C 0 10 275592 638.13 1907 1918 428.9
C 9 187 82433 187.74 1907 1918 428.9
D 8 195 4817872 10475.8 1892 1838 459.7
D 2 250 1725138 3748.51 1892 1838 459.7
D 13 249 517052 1120.69 1892 1838 459.7

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