ASTROSAT CZTI

Data Quality Report

Orbit 18446

Creation date: 2024-06-27T17:49:56.675193
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/AS1A05_199T01_9000002732_18446cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18446cztM0_level2_quad_clean.evt
Size (bytes)512,671,68078,860,160
Size488.9 MB 75.2 MB
Events in quadrant A3,313,199476,204
Events in quadrant B4,458,935480,026
Events in quadrant C3,453,970466,660
Events in quadrant D3,808,559460,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147261
B0178401
C0149641
D0158691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72391081.491919%
B72392032.804255%
C72391472.030667%
D7239881.215638%

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 7584 7239 0 0 0.00% 0.00%
B 7583 7238 54 54 0.71% 0.75%
C 7584 7239 7 7 0.09% 0.10%
D 7584 7239 0 0 0.00% 0.00%

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 0 226 7537 38.26 859 838 175.1
A 3 137 6913 34.7 859 838 175.1
A 12 194 6215 30.71 859 838 175.1
B 10 245 1107035 6675.98 852 829 165.7
B 12 111 20339 117.74 852 829 165.7
B 11 111 17745 102.09 852 829 165.7
C 14 238 125685 643.77 820 821 194.0
C 3 233 67238 342.43 820 821 194.0
C 9 54 37816 190.74 820 821 194.0
D 12 110 501028 2452.68 833 806 203.9
D 13 168 119681 582.86 833 806 203.9
D 2 234 32569 155.74 833 806 203.9

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