ASTROSAT CZTI

Data Quality Report

Orbit 20191218_C05_001T01_9000003374_level2

Creation date: 2019-12-20T10:22:54.384479
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/AS1C05_001T01_9000003374cztM0_level2_bc.evt modeM0/AS1C05_001T01_9000003374cztM0_level2_quad_clean.evt
Size (bytes)2,955,110,4001,404,918,720
Size2.8 GB 1.3 GB
Events in quadrant A17,796,7399,689,380
Events in quadrant B16,742,5679,788,977
Events in quadrant C14,568,7959,381,025
Events in quadrant D35,562,4088,838,242

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014500
B014500
C014500
D014500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01539350
B01520100
C01474750
D02141760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A708677721.089365%
B708689801.382853%
C7086811421.611447%
D7086850057.062426%

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 82223 70870 1 1 0.00% 0.00%
B 82223 70868 8 8 0.01% 0.01%
C 82223 70871 2 2 0.00% 0.00%
D 82223 70866 1386 1386 1.69% 1.96%

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 11 47 2450117 2891.99 3907 3849 845.9
A 13 252 206973 240.13 3907 3849 845.9
A 13 254 122753 140.57 3907 3849 845.9
B 0 190 786682 1069.25 3927 3849 732.1
B 4 21 171158 228.52 3927 3849 732.1
B 0 230 148386 197.42 3927 3849 732.1
C 0 10 61314 65.67 3744 3743 876.6
C 7 247 48915 51.53 3744 3743 876.6
C 0 239 41702 43.3 3744 3743 876.6
D 1 52 7921113 9056.44 3740 3626 874.2
D 7 238 7142547 8165.88 3740 3626 874.2
D 1 239 2531841 2891.91 3740 3626 874.2

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