ASTROSAT CZTI

Data Quality Report

Orbit 20170204_G06_157T02_9000001008_level2

Creation date: 2018-05-17T21:32:28.929140
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/AS1G06_157T02_9000001008cztM0_level2.evt modeM0/AS1G06_157T02_9000001008cztM0_level2_quad_clean.evt
Size (bytes)10,730,413,4401,914,842,880
Size10.0 GB 1.8 GB
Events in quadrant A73,567,09611,952,530
Events in quadrant B73,414,47712,280,308
Events in quadrant C76,654,16912,119,830
Events in quadrant D91,231,07511,378,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02390
B02390
C02390
D02390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03225050
B03194830
C03283070
D03767840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030520
B030540
C030520
D030520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14986434132.277398%
B14986822561.505325%
C14986715771.052266%
D14985065314.358358%

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 180131 149931 1118 1118 0.62% 0.75%
B 180131 149931 117 117 0.06% 0.08%
C 180131 149925 22 22 0.01% 0.01%
D 180131 149919 4500 4500 2.50% 3.00%

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 15 234 3661786 1026.59 17657 17276 3550.1
A 15 239 1265124 351.5 17657 17276 3550.1
A 14 111 591228 161.67 17657 17276 3550.1
B 0 214 1801632 525.1 17958 17528 3397.6
B 11 51 888401 256.32 17958 17528 3397.6
B 4 81 601326 171.82 17958 17528 3397.6
C 9 68 8079374 1999.06 17380 17451 4032.9
C 12 80 414367 98.42 17380 17451 4032.9
C 13 61 135248 29.21 17380 17451 4032.9
D 1 52 11461347 2738.71 17042 16529 4178.9
D 2 216 5808060 1385.9 17042 16529 4178.9
D 14 34 2255457 535.77 17042 16529 4178.9

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