ASTROSAT CZTI

Data Quality Report

Orbit 20170927_A03_086T01_9000001568_level2

Creation date: 2021-08-27T22:03:35.168409
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A03_086T01_9000001568cztM0_level2_bc.evt modeM0/AS1A03_086T01_9000001568cztM0_level2_quad_clean.evt
Size (bytes)10,259,821,4402,683,745,280
Size9.6 GB 2.5 GB
Events in quadrant A96,238,62716,495,462
Events in quadrant B73,852,68317,101,181
Events in quadrant C44,539,59117,354,241
Events in quadrant D81,975,50816,108,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03170
B03170
C03170
D03170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042320
B042380
C042340
D042320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06546910
B05630420
C04330970
D05585990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207578207139.978418%
B207651133736.440133%
C20773218350.883350%
D207628100784.853873%

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 242018 208167 2518 2518 1.04% 1.21%
B 242018 208215 191 191 0.08% 0.09%
C 242018 208299 53 53 0.02% 0.03%
D 242018 208189 3514 3514 1.45% 1.69%

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 8 5 48680060 20519.27 10678 10472 2371.9
A 8 15 1784151 747.79 10678 10472 2371.9
A 13 251 1762710 738.75 10678 10472 2371.9
B 4 239 27007298 12579.9 11003 10771 2146.0
B 0 214 1057473 487.74 11003 10771 2146.0
B 0 219 621668 284.67 11003 10771 2146.0
C 4 254 1222224 497.38 10970 10917 2435.4
C 14 234 146688 55.75 10970 10917 2435.4
C 15 48 125556 47.07 10970 10917 2435.4
D 1 52 14916815 5848.59 10808 10447 2548.7
D 8 195 7199598 2820.7 10808 10447 2548.7
D 5 222 2649573 1035.47 10808 10447 2548.7

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