ASTROSAT CZTI

Data Quality Report

Orbit 20170925_C02_045T03_9000001558_level2

Creation date: 2017-10-18T16:27:23.451497
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/AS1C02_045T03_9000001558cztM0_level2.evt modeM0/AS1C02_045T03_9000001558cztM0_level2_quad_clean.evt
Size (bytes)640,679,040154,200,960
Size611.0 MB 147.1 MB
Events in quadrant A3,956,2981,056,827
Events in quadrant B5,554,9921,053,393
Events in quadrant C3,577,7671,061,883
Events in quadrant D5,798,028968,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168320
B0215980
C0158200
D0224470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76132232.929200%
B76096508.542515%
C76181181.548963%
D76136768.879548%

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 10187 7626 47 47 0.46% 0.62%
B 10187 7627 342 342 3.36% 4.48%
C 10187 7629 0 0 0.00% 0.00%
D 10187 7628 433 433 4.25% 5.68%

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 248176 1320.69 945 927 187.2
A 1 162 32047 166.23 945 927 187.2
A 1 161 12017 59.24 945 927 187.2
B 4 239 1675741 9747.69 931 910 171.8
B 15 204 153498 888.08 931 910 171.8
B 0 219 48483 276.88 931 910 171.8
C 13 61 6904 28.99 914 919 206.5
C 8 222 5447 21.93 914 919 206.5
C 5 207 4140 15.6 914 919 206.5
D 13 104 713326 3473.56 879 856 205.1
D 10 199 552371 2688.85 879 856 205.1
D 5 222 298580 1451.52 879 856 205.1

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