ASTROSAT CZTI

Data Quality Report

Orbit 20220209_A10_058T05_9000004918_level2

Creation date: 2022-02-11T11:14:12.634482
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/AS1A10_058T05_9000004918cztM0_level2_bc.evt modeM0/AS1A10_058T05_9000004918cztM0_level2_quad_clean.evt
Size (bytes)4,416,963,840923,014,080
Size4.1 GB 880.3 MB
Events in quadrant A16,580,5935,973,240
Events in quadrant B27,145,5575,932,964
Events in quadrant C22,824,1435,875,186
Events in quadrant D62,110,0225,014,380

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550100
B02041280
C01710820
D03277730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015360
B015360
C015360
D015360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A752341240.164819%
B7523447606.326927%
C752345090.676556%
D752341298017.252838%

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 102992 75245 4 4 0.00% 0.01%
B 102991 75232 175 175 0.17% 0.23%
C 102991 75234 98 98 0.10% 0.13%
D 102991 75234 2003 2003 1.94% 2.66%

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 10 83 335713 373.26 4116 4064 888.5
A 13 254 117051 127.16 4116 4064 888.5
A 13 6 115000 124.86 4116 4064 888.5
B 5 172 6916673 8899.08 4008 3930 776.8
B 4 171 2017891 2592.66 4008 3930 776.8
B 0 190 1036115 1328.78 4008 3930 776.8
C 15 214 2979089 3264.66 4003 3984 911.3
C 4 254 2379373 2606.57 4003 3984 911.3
C 0 10 794053 866.96 4003 3984 911.3
D 8 195 21948492 25038.08 3715 3613 876.5
D 10 118 8261054 9421.35 3715 3613 876.5
D 7 223 3779820 4308.47 3715 3613 876.5

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