ASTROSAT CZTI

Data Quality Report

Orbit 20181112_A05_004T03_9000002508_level2

Creation date: 2018-11-16T12:01:55.865819
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/AS1A05_004T03_9000002508cztM0_level2_bc.evt modeM0/AS1A05_004T03_9000002508cztM0_level2_quad_clean.evt
Size (bytes)3,092,506,560838,445,760
Size2.9 GB 799.6 MB
Events in quadrant A34,557,6164,996,101
Events in quadrant B15,758,2215,468,942
Events in quadrant C14,688,9225,233,614
Events in quadrant D24,041,7965,052,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02383550
B01465390
C01437370
D01757040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013840
B013840
C013840
D013840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A676641184017.498227%
B676649441.395129%
C676649581.415819%
D6766424993.693249%

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 78876 67662 180 180 0.23% 0.27%
B 78876 67666 7 7 0.01% 0.01%
C 78876 67666 6 6 0.01% 0.01%
D 78876 67662 213 213 0.27% 0.31%

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 15 174 21143967 29773.62 3287 3224 710.0
A 12 189 593213 830.91 3287 3224 710.0
A 4 2 147881 203.73 3287 3224 710.0
B 15 35 845813 1263.83 3564 3479 666.5
B 4 216 273962 405.83 3564 3479 666.5
B 0 229 233171 344.63 3564 3479 666.5
C 3 233 1487305 1883.78 3396 3377 787.7
C 14 225 57877 69.19 3396 3377 787.7
C 5 112 41553 48.46 3396 3377 787.7
D 1 52 8177278 10371.16 3427 3313 788.1
D 12 235 1538229 1947.51 3427 3313 788.1
D 2 234 287335 360.37 3427 3313 788.1

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