ASTROSAT CZTI

Data Quality Report

Orbit 21868

Creation date: 2024-06-27T18:33:13.927028
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/AS1A07_118T01_9000003232_21868cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21868cztM0_level2_quad_clean.evt
Size (bytes)562,968,000109,886,400
Size536.9 MB 104.8 MB
Events in quadrant A3,815,285739,347
Events in quadrant B3,731,977749,242
Events in quadrant C3,521,355714,069
Events in quadrant D5,504,095635,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159472
B0156812
C0150272
D0209432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70301412.005690%
B70311422.019627%
C70311602.275636%
D703174910.652823%

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 9135 7030 32 32 0.35% 0.46%
B 9136 7031 15 15 0.16% 0.21%
C 9136 7031 0 0 0.00% 0.00%
D 9136 7031 524 524 5.74% 7.45%

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 4 2 165416 894.12 918 900 184.0
A 6 16 88749 477.44 918 900 184.0
A 5 16 22226 115.9 918 900 184.0
B 0 190 62415 358.8 907 886 171.5
B 3 64 56486 324.23 907 886 171.5
B 0 230 31769 180.09 907 886 171.5
C 14 238 136807 672.79 866 872 202.0
C 13 61 6054 25.65 866 872 202.0
C 4 191 4402 17.47 866 872 202.0
D 1 52 2063152 10245.6 829 806 201.3
D 7 238 113221 558.47 829 806 201.3
D 2 136 81275 399.76 829 806 201.3

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