ASTROSAT CZTI

Data Quality Report

Orbit 20201203_A10_045T02_9000004048_level2

Creation date: 2021-01-07T03:05:21.134413
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_045T02_9000004048cztM0_level2_bc.evt modeM0/AS1A10_045T02_9000004048cztM0_level2_quad_clean.evt
Size (bytes)825,180,480284,109,120
Size787.0 MB 270.9 MB
Events in quadrant A4,354,6381,915,886
Events in quadrant B4,387,7501,926,349
Events in quadrant C4,431,5351,797,937
Events in quadrant D10,592,8181,731,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390410
B0394530
C0405980
D0600220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179123341.864672%
B179124192.339214%
C179124902.735596%
D179129665.393033%

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 21216 17909 0 0 0.00% 0.00%
B 21217 17908 2 2 0.01% 0.01%
C 21216 17909 0 0 0.00% 0.00%
D 21217 17908 322 322 1.52% 1.80%

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 38028 158.31 1106 1094 233.3
A 8 34 37761 157.16 1106 1094 233.3
A 13 254 26574 109.21 1106 1094 233.3
B 10 245 51574 245.26 1113 1095 205.8
B 0 190 28941 135.3 1113 1095 205.8
B 4 200 18086 82.55 1113 1095 205.8
C 3 233 415757 1714.58 1040 1045 241.9
C 2 16 7664 27.37 1040 1045 241.9
C 5 206 6640 23.13 1040 1045 241.9
D 8 195 2873959 12117.35 1053 1025 237.1
D 1 52 2718438 11461.4 1053 1025 237.1
D 7 80 700273 2949.26 1053 1025 237.1

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