ASTROSAT CZTI

Data Quality Report

Orbit 25067

Creation date: 2024-06-27T19:13:25.340781
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_206T01_9000003672_25067cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25067cztM0_level2_quad_clean.evt
Size (bytes)548,608,32087,076,800
Size523.2 MB 83.0 MB
Events in quadrant A3,012,647572,070
Events in quadrant B3,294,112580,180
Events in quadrant C3,178,121543,926
Events in quadrant D6,703,098500,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130951
B0138401
C0134481
D0244071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6299210.333386%
B6300430.682540%
C6300661.047619%
D63005498.714286%

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 7409 6300 0 0 0.00% 0.00%
B 7410 6301 12 12 0.16% 0.19%
C 7410 6301 11 11 0.15% 0.17%
D 7410 6301 441 441 5.95% 7.00%

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 13 254 11077 65.74 779 763 156.9
A 0 226 6870 38.92 779 763 156.9
A 3 137 6782 38.36 779 763 156.9
B 5 172 91918 621.51 779 758 146.7
B 0 190 76165 514.1 779 758 146.7
B 3 64 28268 187.55 779 758 146.7
C 14 238 117523 667.75 748 754 174.9
C 7 247 58832 332.12 748 754 174.9
C 0 207 47323 266.31 748 754 174.9
D 8 195 1595623 8918.52 739 719 178.8
D 1 52 1062978 5940.03 739 719 178.8
D 9 35 458177 2558.05 739 719 178.8

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