ASTROSAT CZTI

Data Quality Report

Orbit 20210517_A10_058T03_9000004380_level2

Creation date: 2021-05-19T22:18:44.264139
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_058T03_9000004380cztM0_level2_bc.evt modeM0/AS1A10_058T03_9000004380cztM0_level2_quad_clean.evt
Size (bytes)3,511,644,480978,710,400
Size3.3 GB 933.4 MB
Events in quadrant A15,910,2466,450,336
Events in quadrant B35,312,6406,404,053
Events in quadrant C23,328,2036,021,659
Events in quadrant D26,986,3615,910,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01504160
B02160280
C01804160
D01884880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014420
B014420
C014420
D014420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A708497511.060001%
B7084913901.961919%
C7085034934.930134%
D7085025803.641496%

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 86002 70851 6 6 0.01% 0.01%
B 86002 70852 32 32 0.04% 0.05%
C 86002 70851 94 94 0.11% 0.13%
D 86002 70852 73 73 0.08% 0.10%

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 460339 539.48 3945 3891 846.1
A 8 192 131578 150.91 3945 3891 846.1
A 13 254 127443 146.03 3945 3891 846.1
B 6 159 19177568 25679.51 3929 3848 746.7
B 0 229 392482 520.5 3929 3848 746.7
B 4 171 266994 352.43 3929 3848 746.7
C 3 233 5177762 6067.76 3656 3650 852.7
C 15 208 2925482 3426.47 3656 3650 852.7
C 10 22 590094 687.73 3656 3650 852.7
D 13 104 6602046 7764.15 3782 3677 849.9
D 8 195 3469825 4078.54 3782 3677 849.9
D 2 250 695071 813.55 3782 3677 849.9

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