ASTROSAT CZTI

Data Quality Report

Orbit 35050

Creation date: 2022-03-23T09:23:39.592260
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/AS1A10_057T01_9000005022_35050cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35050cztM0_level2_quad_clean.evt
Size (bytes)515,805,12067,654,080
Size491.9 MB 64.5 MB
Events in quadrant A2,940,417421,203
Events in quadrant B3,777,034411,218
Events in quadrant C3,433,886413,494
Events in quadrant D5,055,480375,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126763
B0151902
C0137492
D0192352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6112240.392670%
B61122994.892016%
C6112981.603403%
D61123205.235602%

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 8797 6113 11 11 0.13% 0.18%
B 8797 6113 209 209 2.38% 3.42%
C 8797 6113 96 96 1.09% 1.57%
D 8797 6113 301 301 3.42% 4.92%

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 10 83 81188 557.49 710 697 144.4
A 9 143 61625 421.99 710 697 144.4
A 15 237 14980 98.92 710 697 144.4
B 5 172 662009 4930.08 696 676 134.1
B 5 200 206577 1534.94 696 676 134.1
B 4 232 77824 575.12 696 676 134.1
C 15 214 254208 1571.66 691 696 161.3
C 0 10 247428 1529.63 691 696 161.3
C 9 54 177793 1097.92 691 696 161.3
D 8 195 1068384 6437.66 678 660 165.9
D 12 227 476199 2867.18 678 660 165.9
D 13 249 150993 906.41 678 660 165.9

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