ASTROSAT CZTI

Data Quality Report

Orbit 22889

Creation date: 2024-06-27T18:47:08.133147
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/AS1A08_009T01_9000003382_22889cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22889cztM0_level2_quad_clean.evt
Size (bytes)490,371,84094,446,720
Size467.7 MB 90.1 MB
Events in quadrant A3,196,026607,209
Events in quadrant B3,426,141615,727
Events in quadrant C3,174,806585,090
Events in quadrant D4,580,634566,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141481
B0147021
C0141041
D0182371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6967370.531075%
B6968620.889782%
C6968680.975890%
D69682763.960964%

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 7302 6968 0 0 0.00% 0.00%
B 7303 6969 0 0 0.00% 0.00%
C 7303 6969 0 0 0.00% 0.00%
D 7303 6969 183 183 2.51% 2.63%

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 11780 66.38 825 806 165.3
A 13 252 8408 45.98 825 806 165.3
A 0 226 7229 38.85 825 806 165.3
B 0 190 162116 1026.32 818 797 157.2
B 0 229 25322 156.03 818 797 157.2
B 12 111 18849 114.85 818 797 157.2
C 14 238 124776 680.4 781 783 182.2
C 13 61 5485 25.8 781 783 182.2
C 7 247 4249 19.02 781 783 182.2
D 1 52 561830 2948.25 783 758 190.3
D 7 238 363227 1904.66 783 758 190.3
D 12 227 219354 1148.65 783 758 190.3

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