ASTROSAT CZTI

Data Quality Report

Orbit 20181016_A05_174T01_9000002440_level2

Creation date: 2018-10-22T11:52:40.356549
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_174T01_9000002440cztM0_level2_bc.evt modeM0/AS1A05_174T01_9000002440cztM0_level2_quad_clean.evt
Size (bytes)6,673,481,2802,245,904,640
Size6.2 GB 2.1 GB
Events in quadrant A41,474,04514,196,411
Events in quadrant B39,381,52914,537,110
Events in quadrant C66,142,23113,564,286
Events in quadrant D43,026,02513,571,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03872120
B03785560
C04853990
D03908400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036200
B036200
C036200
D036200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17748929451.659258%
B17749029551.664883%
C177488125357.062449%
D17749031571.778692%

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 204636 177470 90 90 0.04% 0.05%
B 204636 177460 28 28 0.01% 0.02%
C 204636 177462 317 317 0.15% 0.18%
D 204636 177465 218 218 0.11% 0.12%

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 6563994 3361.35 8954 8769 1950.2
A 15 223 341348 170.54 8954 8769 1950.2
A 3 1 160034 77.56 8954 8769 1950.2
B 15 35 956514 550.51 9133 8893 1721.4
B 4 48 627692 359.48 9133 8893 1721.4
B 10 16 561956 321.29 9133 8893 1721.4
C 3 233 32092586 16145.39 8518 8449 1987.2
C 7 247 1220547 609.95 8518 8449 1987.2
C 8 128 53148 22.49 8518 8449 1987.2
D 5 222 4893171 2418.94 8826 8511 2019.3
D 13 249 771434 377.81 8826 8511 2019.3
D 12 218 659223 322.24 8826 8511 2019.3

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