ASTROSAT CZTI

Data Quality Report

Orbit 20190303_A05_082T12_9000002754_level2

Creation date: 2019-03-04T12:14:43.752592
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_082T12_9000002754cztM0_level2_bc.evt modeM0/AS1A05_082T12_9000002754cztM0_level2_quad_clean.evt
Size (bytes)1,083,706,560295,194,240
Size1.0 GB 281.5 MB
Events in quadrant A10,897,1781,808,416
Events in quadrant B4,886,6172,009,811
Events in quadrant C4,134,3791,949,963
Events in quadrant D11,564,2931,823,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680980
B0437360
C0414730
D0689270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19567315116.103644%
B195674582.340676%
C195673091.579189%
D19567246412.592630%

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 24447 19566 413 413 1.69% 2.11%
B 24447 19567 27 27 0.11% 0.14%
C 24447 19567 0 0 0.00% 0.00%
D 24447 19565 237 237 0.97% 1.21%

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 0 13 6962370 32014.62 1005 986 217.4
A 13 254 27405 121.5 1005 986 217.4
A 13 210 24487 108.08 1005 986 217.4
B 3 64 352926 1694.32 1107 1079 207.7
B 4 80 114082 544.16 1107 1079 207.7
B 7 220 85608 407.05 1107 1079 207.7
C 3 233 15966 60.05 1068 1065 248.2
C 9 54 11676 42.76 1068 1065 248.2
C 13 61 6472 21.79 1068 1065 248.2
D 7 238 5750092 24231.96 1034 999 237.3
D 1 52 950549 4002.28 1034 999 237.3
D 13 153 660739 2780.75 1034 999 237.3

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