ASTROSAT CZTI

Data Quality Report

Orbit 20210415_A10_071T01_9000004310_level2

Creation date: 2021-04-17T15:39:46.412706
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_071T01_9000004310cztM0_level2_bc.evt modeM0/AS1A10_071T01_9000004310cztM0_level2_quad_clean.evt
Size (bytes)3,112,896,960727,355,520
Size2.9 GB 693.7 MB
Events in quadrant A13,114,1574,692,730
Events in quadrant B44,416,7284,420,995
Events in quadrant C13,756,3504,470,896
Events in quadrant D18,930,3344,351,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012200
B012200
C012200
D012200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01256220
B02433220
C01304720
D01451940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596397251.215647%
B59639895415.013666%
C5963913322.233438%
D5963922233.727427%

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 68599 59641 0 0 0.00% 0.00%
B 68599 59644 52 52 0.08% 0.09%
C 68599 59642 0 0 0.00% 0.00%
D 68598 59637 418 418 0.61% 0.70%

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 8 192 139742 191.48 3349 3294 712.6
A 13 254 101392 137.66 3349 3294 712.6
A 3 1 33792 42.8 3349 3294 712.6
B 6 36 16703848 27463.93 3214 3142 608.1
B 6 159 15227392 25035.93 3214 3142 608.1
B 0 183 63621 99.46 3214 3142 608.1
C 3 233 1381611 1863.08 3174 3164 739.9
C 2 114 113266 148.81 3174 3164 739.9
C 14 254 50567 64.07 3174 3164 739.9
D 7 80 4181673 5586.39 3187 3104 748.0
D 8 195 1403658 1872.42 3187 3104 748.0
D 11 135 492682 654.52 3187 3104 748.0

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