ASTROSAT CZTI

Data Quality Report

Orbit 24167

Creation date: 2024-06-27T19:03:00.849511
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_067T01_9000003578_24167cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24167cztM0_level2_quad_clean.evt
Size (bytes)747,889,92096,719,040
Size713.2 MB 92.2 MB
Events in quadrant A3,167,087657,656
Events in quadrant B3,237,624674,488
Events in quadrant C3,364,200649,720
Events in quadrant D12,422,439473,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138902
B0139962
C0143572
D0416032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6774250.369058%
B6774470.693829%
C67741001.476233%
D6774350051.668143%

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 7684 6775 1 1 0.01% 0.01%
B 7684 6775 1 1 0.01% 0.01%
C 7684 6775 16 16 0.21% 0.24%
D 7683 6773 3128 3128 40.71% 46.18%

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 10932 61.1 820 801 165.8
A 3 137 7436 40.02 820 801 165.8
A 0 226 6924 36.93 820 801 165.8
B 12 111 19382 117.71 823 802 157.8
B 11 111 16957 102.35 823 802 157.8
B 14 111 14864 89.09 823 802 157.8
C 14 238 125079 664.18 795 799 187.1
C 10 23 77819 411.61 795 799 187.1
C 10 9 52873 278.29 795 799 187.1
D 7 238 9761790 64380.38 619 599 151.6
D 8 195 252493 1661.38 619 599 151.6
D 1 52 47262 307.77 619 599 151.6

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