ASTROSAT CZTI

Data Quality Report

Orbit 20180814_G08_028T01_9000002306_level2

Creation date: 2018-08-16T11:21:36.171720
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/AS1G08_028T01_9000002306cztM0_level2_bc.evt modeM0/AS1G08_028T01_9000002306cztM0_level2_quad_clean.evt
Size (bytes)1,026,515,520392,077,440
Size979.0 MB 373.9 MB
Events in quadrant A5,829,2222,567,602
Events in quadrant B6,501,6362,578,177
Events in quadrant C7,535,1572,444,155
Events in quadrant D9,332,8922,385,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580530
B0603480
C0640940
D0688430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05660
B05660
C05660
D05660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A276275782.092156%
B276277662.772650%
C2762715715.686466%
D2762712134.390632%

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 30743 27629 3 3 0.01% 0.01%
B 30743 27625 2 2 0.01% 0.01%
C 30743 27627 52 52 0.17% 0.19%
D 30742 27626 324 324 1.05% 1.17%

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 40216 119.11 1490 1461 325.4
A 15 223 25795 74.79 1490 1461 325.4
A 7 16 16853 47.31 1490 1461 325.4
B 4 48 210955 739.11 1492 1457 283.4
B 0 189 145787 509.2 1492 1457 283.4
B 3 64 75613 261.62 1492 1457 283.4
C 3 233 1961220 5935.32 1413 1407 330.2
C 7 247 44090 129.27 1413 1407 330.2
C 0 207 38339 111.85 1413 1407 330.2
D 15 0 1312617 3896.09 1452 1401 336.5
D 1 52 1070567 3176.87 1452 1401 336.5
D 5 222 302842 895.69 1452 1401 336.5

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