ASTROSAT CZTI

Data Quality Report

Orbit 20180726_A04_223T01_9000002258_level2

Creation date: 2018-07-30T10:33:00.683107
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/AS1A04_223T01_9000002258cztM0_level2_bc.evt modeM0/AS1A04_223T01_9000002258cztM0_level2_quad_clean.evt
Size (bytes)3,502,840,3201,323,564,480
Size3.3 GB 1.2 GB
Events in quadrant A21,190,8738,382,812
Events in quadrant B28,367,8768,435,814
Events in quadrant C25,891,3598,263,264
Events in quadrant D23,548,1967,882,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02162780
B02429860
C02256910
D02228320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021260
B021260
C021260
D021260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10395910350.995585%
B10395934243.293606%
C10395910631.022518%
D10395912971.247607%

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 120545 103954 7 7 0.01% 0.01%
B 120545 103956 234 234 0.19% 0.23%
C 120545 103958 8 8 0.01% 0.01%
D 120545 103956 139 139 0.12% 0.13%

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 9 143 281065 234.96 5413 5312 1173.6
A 15 69 78375 62.26 5413 5312 1173.6
A 13 252 39331 28.99 5413 5312 1173.6
B 10 16 4797104 4715.42 5402 5255 1016.2
B 3 64 530982 517.34 5402 5255 1016.2
B 0 229 314230 304.05 5402 5255 1016.2
C 3 233 4295812 3740.07 5251 5180 1147.2
C 4 254 654521 566.02 5251 5180 1147.2
C 3 9 258074 220.44 5251 5180 1147.2
D 2 33 949431 779.08 5280 5095 1212.1
D 7 38 619121 506.57 5280 5095 1212.1
D 2 234 393608 320.52 5280 5095 1212.1

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