ASTROSAT CZTI

Data Quality Report

Orbit 20210610_A10_071T38_9000004454_level2

Creation date: 2021-06-12T16:45:51.621925
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_071T38_9000004454cztM0_level2_bc.evt modeM0/AS1A10_071T38_9000004454cztM0_level2_quad_clean.evt
Size (bytes)3,774,404,160854,637,120
Size3.5 GB 815.0 MB
Events in quadrant A15,177,9595,532,859
Events in quadrant B36,645,4545,489,146
Events in quadrant C17,486,0185,175,235
Events in quadrant D40,271,3524,913,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01458360
B02200760
C01581600
D02368500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014160
B014160
C014160
D014160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A696299751.400279%
B6962924163.469819%
C6962931614.539775%
D6962959298.515130%

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 80935 69621 7 7 0.01% 0.01%
B 80935 69616 65 65 0.08% 0.09%
C 80935 69618 34 34 0.04% 0.05%
D 80935 69620 598 598 0.74% 0.86%

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 13 184164 217.46 3877 3822 829.3
A 13 254 123995 144.91 3877 3822 829.3
A 0 226 24404 24.82 3877 3822 829.3
B 6 159 18837609 25907.47 3871 3780 727.0
B 5 255 856625 1173.16 3871 3780 727.0
B 6 36 474355 647.31 3871 3780 727.0
C 3 233 1671312 1968.04 3623 3616 847.4
C 0 10 974360 1145.57 3623 3616 847.4
C 2 16 289544 337.42 3623 3616 847.4
D 8 195 16958714 20539.31 3607 3508 825.5
D 12 218 3644147 4410.22 3607 3508 825.5
D 13 174 2863855 3464.99 3607 3508 825.5

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