ASTROSAT CZTI

Data Quality Report

Orbit 20171029_A04_144T01_9000001652_level2

Creation date: 2017-11-09T14:34:23.209818
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/AS1A04_144T01_9000001652cztM0_level2_bc.evt modeM0/AS1A04_144T01_9000001652cztM0_level2_quad_clean.evt
Size (bytes)7,575,203,5201,952,167,680
Size7.1 GB 1.8 GB
Events in quadrant A62,690,89012,229,232
Events in quadrant B49,446,24312,784,930
Events in quadrant C30,172,64512,676,245
Events in quadrant D76,837,23811,087,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030720
B030720
C030720
D030720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04404890
B03961050
C03122590
D04925280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150972130138.619479%
B150972105767.005273%
C15097214660.971041%
D1509721704711.291498%

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 173250 150971 2024 2024 1.17% 1.34%
B 173250 150976 83 83 0.05% 0.05%
C 173250 150976 145 145 0.08% 0.10%
D 173250 150940 3142 3142 1.81% 2.08%

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 8 5 29132348 17474.2 7359 7150 1666.8
A 0 8 2927454 1752.09 7359 7150 1666.8
A 8 15 708189 420.6 7359 7150 1666.8
B 4 239 15380905 10008.19 7627 7352 1536.1
B 3 64 1644138 1065.55 7627 7352 1536.1
B 4 81 837821 540.64 7627 7352 1536.1
C 9 204 510989 302.23 7519 7390 1666.3
C 14 234 174493 100.28 7519 7390 1666.3
C 13 61 44837 22.47 7519 7390 1666.3
D 10 253 13474227 8267.9 7022 6757 1628.9
D 1 52 11298196 6932.0 7022 6757 1628.9
D 8 195 5907106 3622.32 7022 6757 1628.9

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