ASTROSAT CZTI

Data Quality Report

Orbit 28350

Creation date: 2024-06-27T19:50:47.790709
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_116T01_9000004082_28350cztM0_level2.evt modeM0/AS1A10_116T01_9000004082_28350cztM0_level2_quad_clean.evt
Size (bytes)1,152,861,120210,769,920
Size1.1 GB 201.0 MB
Events in quadrant A8,413,8551,345,636
Events in quadrant B7,576,7011,373,189
Events in quadrant C7,416,2321,310,151
Events in quadrant D10,444,8821,270,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349980
B0324400
C0322460
D0413870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157233872.461362%
B157242361.500890%
C157242831.799796%
D157235513.504420%

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 17413 15725 170 170 0.98% 1.08%
B 17414 15724 3 3 0.02% 0.02%
C 17414 15727 0 0 0.00% 0.00%
D 17413 15726 303 303 1.74% 1.93%

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 15 174 1037744 2673.45 1903 1859 387.5
A 12 96 40519 99.78 1903 1859 387.5
A 13 254 24174 57.59 1903 1859 387.5
B 0 230 63034 166.84 1898 1850 366.7
B 12 111 46605 122.04 1898 1850 366.7
B 11 111 42372 110.5 1898 1850 366.7
C 14 238 293743 684.42 1825 1832 426.5
C 3 233 14164 28.91 1825 1832 426.5
C 13 61 12571 25.18 1825 1832 426.5
D 1 52 2093836 4815.87 1821 1774 434.4
D 8 195 919137 2111.74 1821 1774 434.4
D 2 250 235021 536.93 1821 1774 434.4

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