ASTROSAT CZTI

Data Quality Report

Orbit 20160311_G02_018T06_9000000370_level2

Creation date: 2017-10-27T22:39:11.088976
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/AS1G02_018T06_9000000370cztM0_level2.evt modeM0/AS1G02_018T06_9000000370cztM0_level2_quad_clean.evt
Size (bytes)9,590,080,3201,708,773,120
Size8.9 GB 1.6 GB
Events in quadrant A67,733,76610,374,247
Events in quadrant B69,252,48810,683,133
Events in quadrant C74,138,13210,452,571
Events in quadrant D69,410,26810,198,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02130
B02130
C02130
D02130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03038590
B03048710
C03238530
D03147190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029940
B029940
C029940
D029940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14663819541.332533%
B14663819071.300481%
C14663838572.630287%
D14663819791.349582%

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 171445 146670 232 232 0.14% 0.16%
B 171445 146670 81 81 0.05% 0.06%
C 171445 146670 2215 2215 1.29% 1.51%
D 171445 146670 714 714 0.42% 0.49%

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 8 192 759441 212.92 17165 16799 3487.8
A 8 15 700584 196.05 17165 16799 3487.8
A 12 194 192840 50.47 17165 16799 3487.8
B 10 244 426163 122.87 17510 17090 3329.4
B 4 48 350199 100.05 17510 17090 3329.4
B 4 200 271982 76.56 17510 17090 3329.4
C 2 53 5053722 1305.07 16616 16677 3859.6
C 14 223 2908701 749.3 16616 16677 3859.6
C 10 65 277050 67.46 16616 16677 3859.6
D 7 67 1542558 388.56 16590 16190 3928.2
D 12 33 763767 190.31 16590 16190 3928.2
D 13 53 732783 182.42 16590 16190 3928.2

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