ASTROSAT CZTI

Data Quality Report

Orbit 20210313_A10_048T05_9000004250_level2

Creation date: 2021-03-24T21:29:50.999216
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_048T05_9000004250cztM0_level2_bc.evt modeM0/AS1A10_048T05_9000004250cztM0_level2_quad_clean.evt
Size (bytes)5,713,989,1201,046,868,480
Size5.3 GB 998.4 MB
Events in quadrant A17,647,0226,738,423
Events in quadrant B18,147,0636,894,191
Events in quadrant C21,992,0486,659,791
Events in quadrant D109,695,8215,783,306

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016720
B016720
C016720
D016720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01716960
B01736000
C01879830
D04697660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8210313101.595557%
B8210515521.890262%
C8210527813.387126%
D821022573131.340284%

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 98164 82111 4 4 0.00% 0.00%
B 98164 82110 26 26 0.03% 0.03%
C 98164 82108 119 119 0.12% 0.14%
D 98164 82104 8455 8455 8.61% 10.30%

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 12 96 147336 149.06 4499 4425 958.7
A 13 254 143587 145.15 4499 4425 958.7
A 0 13 81782 80.69 4499 4425 958.7
B 15 222 176088 201.98 4553 4446 849.8
B 0 190 150382 171.73 4553 4446 849.8
B 0 230 131825 149.89 4553 4446 849.8
C 3 233 2655828 2551.15 4403 4388 1039.3
C 7 247 2165222 2079.1 4403 4388 1039.3
C 2 114 159039 148.8 4403 4388 1039.3
D 8 195 76057991 82573.75 4006 3870 921.0
D 12 33 9704387 10532.08 4006 3870 921.0
D 7 238 3667240 3977.41 4006 3870 921.0

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