ASTROSAT CZTI

Data Quality Report

Orbit 20170216_A02_134T01_9000001036_level2

Creation date: 2017-09-23T04:47:28.485318
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/AS1A02_134T01_9000001036cztM0_level2.evt modeM0/AS1A02_134T01_9000001036cztM0_level2_quad_clean.evt
Size (bytes)5,776,839,3601,188,308,160
Size5.4 GB 1.1 GB
Events in quadrant A38,684,9517,718,759
Events in quadrant B41,292,8157,783,540
Events in quadrant C43,993,0577,493,498
Events in quadrant D45,252,4267,178,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017360
B017360
C017360
D017360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01736460
B01796750
C01901100
D01950320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A848776620.779952%
B848778991.059180%
C8487710911.285389%
D8487717722.087727%

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 97793 84887 19 19 0.02% 0.02%
B 97793 84888 115 115 0.12% 0.14%
C 97793 84889 405 405 0.41% 0.48%
D 97793 84887 942 942 0.96% 1.11%

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 13 248 189217 90.37 9929 9720 1986.3
A 13 14 154850 73.07 9929 9720 1986.3
A 0 226 94561 42.71 9929 9720 1986.3
B 0 214 987026 528.08 9980 9734 1850.6
B 0 187 983915 526.4 9980 9734 1850.6
B 0 219 318203 166.68 9980 9734 1850.6
C 9 68 5486417 2500.24 9605 9631 2190.5
C 8 229 557158 249.95 9605 9631 2190.5
C 1 16 395587 176.19 9605 9631 2190.5
D 2 152 1838739 795.53 9561 9276 2299.7
D 5 233 1707713 738.55 9561 9276 2299.7
D 14 34 1495358 646.21 9561 9276 2299.7

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