ASTROSAT CZTI

Data Quality Report

Orbit 20181118_A05_143T01_9000002524_level2

Creation date: 2018-11-21T12:29:57.080405
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/AS1A05_143T01_9000002524cztM0_level2.evt modeM0/AS1A05_143T01_9000002524cztM0_level2_quad_clean.evt
Size (bytes)8,224,735,6801,321,871,040
Size7.7 GB 1.2 GB
Events in quadrant A49,924,6138,490,967
Events in quadrant B56,893,2258,573,972
Events in quadrant C56,123,3228,319,637
Events in quadrant D79,474,8177,858,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01750
B01750
C01750
D01750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02143990
B02327850
C02315810
D03034220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020200
B020200
C020200
D020200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9914421382.156459%
B9914432593.287138%
C9914416851.699548%
D9914480168.085209%

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 116541 99163 735 735 0.63% 0.74%
B 116541 99162 1583 1583 1.36% 1.60%
C 116541 99164 8 8 0.01% 0.01%
D 116541 99164 5892 5892 5.06% 5.94%

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 15 174 3468018 1431.64 12057 11784 2414.2
A 12 189 150106 57.3 12057 11784 2414.2
A 0 226 106625 39.28 12057 11784 2414.2
B 3 64 6385922 2786.14 12060 11738 2287.8
B 15 35 705554 303.26 12060 11738 2287.8
B 0 229 642962 275.91 12060 11738 2287.8
C 3 233 8336039 3048.77 11761 11861 2730.3
C 14 238 1806060 657.13 11761 11861 2730.3
C 5 112 83318 26.17 11761 11861 2730.3
D 1 52 34034815 12223.57 11530 11210 2783.4
D 2 152 457101 160.19 11530 11210 2783.4
D 2 234 405151 141.53 11530 11210 2783.4

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