ASTROSAT CZTI

Data Quality Report

Orbit 20160701_G05_191T01_9000000524_level2

Creation date: 2016-09-06T17:48:44.894258
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/AS1G05_191T01_9000000524cztM0_level2_bc.evt modeM0/AS1G05_191T01_9000000524cztM0_level2_quad_clean.evt
Size (bytes)1,974,631,680740,494,080
Size1.8 GB 706.2 MB
Events in quadrant A14,074,5444,679,353
Events in quadrant B14,705,1114,670,280
Events in quadrant C13,822,7084,603,417
Events in quadrant D13,204,9854,458,272

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01276400
B01286880
C01315600
D01256940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5857912112.067294%
B5858014482.471833%
C5858013572.316490%
D5858010181.737794%

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 65380 58574 2 2 0.00% 0.00%
B 65380 58573 139 139 0.21% 0.24%
C 65380 58574 14 14 0.02% 0.02%
D 65380 58575 24 24 0.04% 0.04%

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 0 199 1775021 2583.72 3004 2937 685.9
A 0 50 393013 568.74 3004 2937 685.9
A 0 226 156094 223.3 3004 2937 685.9
B 14 167 1622705 2754.29 3027 2963 588.1
B 3 0 450379 760.81 3027 2963 588.1
B 10 16 445695 752.84 3027 2963 588.1
C 9 144 2160256 3253.07 2945 2919 663.2
C 8 128 60653 87.06 2945 2919 663.2
C 8 112 23895 31.63 2945 2919 663.2
D 10 172 817471 1160.65 2955 2843 701.9
D 13 239 339335 479.42 2955 2843 701.9
D 2 14 239977 337.86 2955 2843 701.9

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