ASTROSAT CZTI

Data Quality Report

Orbit 22164

Creation date: 2024-06-27T18:37:40.006607
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_145T01_9000003278_22164cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22164cztM0_level2_quad_clean.evt
Size (bytes)475,588,80095,558,400
Size453.6 MB 91.1 MB
Events in quadrant A3,082,909624,832
Events in quadrant B3,157,926634,742
Events in quadrant C3,105,235606,697
Events in quadrant D4,615,565574,586

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134032
B0135231
C0134431
D0181431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64941271.955651%
B64941302.001848%
C64941241.909455%
D64955488.437259%

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 6959 6495 0 0 0.00% 0.00%
B 6959 6495 1 1 0.01% 0.02%
C 6959 6495 0 0 0.00% 0.00%
D 6960 6496 417 417 5.99% 6.42%

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 10128 57.79 799 781 161.8
A 3 137 7032 38.65 799 781 161.8
A 0 226 6788 37.14 799 781 161.8
B 12 111 19013 120.76 793 773 151.0
B 11 111 16788 106.03 793 773 151.0
B 0 197 16485 104.02 793 773 151.0
C 14 238 121780 677.29 762 766 178.7
C 8 128 8359 42.5 762 766 178.7
C 13 61 5392 25.89 762 766 178.7
D 1 52 1726744 9523.35 742 720 181.2
D 2 136 35212 190.31 742 720 181.2
D 2 234 25849 138.65 742 720 181.2

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