ASTROSAT CZTI

Data Quality Report

Orbit 26730

Creation date: 2024-06-27T19:32:13.319794
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/AS1T03_223T01_9000003850_26730cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26730cztM0_level2_quad_clean.evt
Size (bytes)594,521,28098,265,600
Size567.0 MB 93.7 MB
Events in quadrant A4,511,961622,989
Events in quadrant B4,976,803634,886
Events in quadrant C3,772,045624,466
Events in quadrant D4,265,729601,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180110
B0195830
C0157680
D0176840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70573825.413065%
B70585047.140833%
C70581522.153585%
D70582193.102862%

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 8927 7059 302 302 3.38% 4.28%
B 8928 7060 220 220 2.46% 3.12%
C 8928 7060 24 24 0.27% 0.34%
D 8928 7060 113 113 1.27% 1.60%

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 11 29 1194529 7043.92 848 831 169.5
A 0 13 48546 281.56 848 831 169.5
A 13 254 10805 58.86 848 831 169.5
B 0 189 1592933 9908.17 841 820 160.7
B 3 112 45787 279.84 841 820 160.7
B 10 246 30858 186.93 841 820 160.7
C 4 254 372723 1914.59 827 833 194.2
C 14 238 131739 673.94 827 833 194.2
C 15 208 27727 138.46 827 833 194.2
D 1 52 862375 3985.97 816 799 216.2
D 7 80 197569 910.33 816 799 216.2
D 2 250 43443 197.29 816 799 216.2

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