ASTROSAT CZTI

Data Quality Report

Orbit 20170215_T01_156T01_9000001034_level2

Creation date: 2017-09-23T04:32:59.238113
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/AS1T01_156T01_9000001034cztM0_level2.evt modeM0/AS1T01_156T01_9000001034cztM0_level2_quad_clean.evt
Size (bytes)5,581,224,0001,010,344,320
Size5.2 GB 963.5 MB
Events in quadrant A38,397,9046,334,060
Events in quadrant B41,332,7816,432,987
Events in quadrant C38,370,0206,357,661
Events in quadrant D45,494,0015,956,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016400
B016400
C016400
D016400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01662930
B01741140
C01668720
D01891360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A805497610.944767%
B805499721.206719%
C805495880.729990%
D8054822142.748672%

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 102369 80562 6 6 0.01% 0.01%
B 102369 80562 56 56 0.05% 0.07%
C 102369 80564 39 39 0.04% 0.05%
D 102369 80562 1475 1475 1.44% 1.83%

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 15 239 140381 65.68 9883 9691 1989.8
A 0 226 98082 44.42 9883 9691 1989.8
A 12 194 89472 40.09 9883 9691 1989.8
B 0 214 1368448 726.6 9958 9757 1869.9
B 0 219 532995 279.82 9958 9757 1869.9
B 0 229 245676 126.17 9958 9757 1869.9
C 1 16 443965 196.42 9623 9700 2210.9
C 8 229 237516 103.04 9623 9700 2210.9
C 13 61 74454 29.29 9623 9700 2210.9
D 1 52 3609926 1541.26 9553 9280 2336.2
D 2 152 1897812 808.39 9553 9280 2336.2
D 2 14 1314447 558.68 9553 9280 2336.2

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