ASTROSAT CZTI

Data Quality Report

Orbit 20201207_A10_073T04_9000004058_level2

Creation date: 2021-01-07T00:55:44.666354
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_073T04_9000004058cztM0_level2_bc.evt modeM0/AS1A10_073T04_9000004058cztM0_level2_quad_clean.evt
Size (bytes)577,944,000271,373,760
Size551.2 MB 258.8 MB
Events in quadrant A2,994,3401,870,915
Events in quadrant B2,927,4541,875,881
Events in quadrant C3,484,0351,796,277
Events in quadrant D7,088,7261,661,843

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300790
B0300350
C0318460
D0466000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14702750.510135%
B14702360.244865%
C147021691.149503%
D14702163511.120936%

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 16232 14702 13 13 0.08% 0.09%
B 16232 14702 0 0 0.00% 0.00%
C 16232 14702 1 1 0.01% 0.01%
D 16232 14698 113 113 0.70% 0.77%

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 13 170 78293 467.61 745 732 165.9
A 13 254 22748 132.73 745 732 165.9
A 0 13 22649 132.14 745 732 165.9
B 0 230 20777 139.3 744 728 143.9
B 4 52 14180 93.47 744 728 143.9
B 4 200 14142 93.2 744 728 143.9
C 3 233 637202 3687.05 712 709 172.6
C 15 208 109125 628.03 712 709 172.6
C 13 61 4143 19.89 712 709 172.6
D 12 1 1516897 9351.98 689 667 162.1
D 8 195 1180868 7279.38 689 667 162.1
D 1 52 631491 3890.87 689 667 162.1

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