ASTROSAT CZTI

Data Quality Report

Orbit 11244

Creation date: 2024-06-27T16:10:13.813513
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/AS1T01_202T01_9000001640_11244cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11244cztM0_level2_quad_clean.evt
Size (bytes)512,582,400115,678,080
Size488.8 MB 110.3 MB
Events in quadrant A5,127,273753,739
Events in quadrant B3,189,063805,555
Events in quadrant C2,719,464821,456
Events in quadrant D4,118,422741,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189732
B0129661
C0116281
D0160401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545358810.783055%
B54531432.622410%
C5453330.605171%
D54531773.245920%

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 6623 5454 419 419 6.33% 7.68%
B 6623 5454 58 58 0.88% 1.06%
C 6623 5454 2 2 0.03% 0.04%
D 6623 5454 118 118 1.78% 2.16%

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 8 5 1901220 12341.89 671 654 154.0
A 14 238 400323 2595.37 671 654 154.0
A 12 146 139994 904.85 671 654 154.0
B 4 239 354843 2518.56 697 684 140.6
B 15 204 38622 269.79 697 684 140.6
B 11 51 23932 165.33 697 684 140.6
C 4 254 12966 73.59 694 704 166.6
C 13 61 5169 26.79 694 704 166.6
C 12 4 2300 9.58 694 704 166.6
D 12 157 645709 3691.6 672 653 174.7
D 8 195 348021 1987.95 672 653 174.7
D 10 253 228037 1301.3 672 653 174.7

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