ASTROSAT CZTI

Data Quality Report

Orbit 20151007_P01_140T01_9000000004_level2

Creation date: 2016-09-06T18:01:07.897230
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/AS1P01_140T01_9000000004cztM0_level2_bc.evt modeM0/AS1P01_140T01_9000000004cztM0_level2_quad_clean.evt
Size (bytes)1,695,093,120507,859,200
Size1.6 GB 484.3 MB
Events in quadrant A9,023,7793,137,214
Events in quadrant B10,681,9013,169,615
Events in quadrant C9,864,4153,103,508
Events in quadrant D18,715,3422,899,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01966850
B01972600
C01838570
D02262410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01570
C01580
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09220
B09140
C09160
D09180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447632290.511583%
B447261230.275008%
C447821310.292528%
D4468922254.978854%

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 83995 44940 60 60 0.07% 0.13%
B 83995 44882 17 17 0.02% 0.04%
C 83995 44957 63 63 0.08% 0.14%
D 83995 44820 425 425 0.51% 0.95%

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 22 371045 942.78 1870 1826 391.6
A 0 86 224330 568.15 1870 1826 391.6
A 13 17 134842 339.65 1870 1826 391.6
B 8 236 543806 1562.29 1922 1858 346.9
B 2 2 334792 959.76 1922 1858 346.9
B 10 199 227534 650.56 1922 1858 346.9
C 3 32 1546494 3873.18 1860 1828 398.8
C 0 186 148001 366.52 1860 1828 398.8
C 0 203 117512 290.07 1860 1828 398.8
D 0 243 2086056 4876.98 1831 1754 427.4
D 13 69 1273839 2976.51 1831 1754 427.4
D 14 53 487656 1136.94 1831 1754 427.4

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