ASTROSAT CZTI

Data Quality Report

Orbit 20160504_G05_221T01_9000000442_level2

Creation date: 2016-09-17T18:22:52.502930
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/AS1G05_221T01_9000000442cztM0_level2_bc.evt modeM0/AS1G05_221T01_9000000442cztM0_level2_quad_clean.evt
Size (bytes)2,735,614,080851,673,600
Size2.5 GB 812.2 MB
Events in quadrant A14,641,5235,342,368
Events in quadrant B21,238,1265,353,413
Events in quadrant C23,978,1235,171,716
Events in quadrant D18,183,5065,088,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01484890
B01671660
C01780970
D01600360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014340
B014340
C014340
D014340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7057213121.859094%
B7057214952.118404%
C7057235655.051579%
D7057217742.513745%

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 80782 70574 52 52 0.06% 0.07%
B 80782 70573 57 57 0.07% 0.08%
C 80782 70574 1100 1100 1.36% 1.56%
D 80782 70575 82 82 0.10% 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 0 118 773016 1023.09 3373 3309 752.3
A 0 50 332049 436.96 3373 3309 752.3
A 3 1 215890 282.56 3373 3309 752.3
B 15 204 6340054 9541.36 3425 3331 664.1
B 2 249 671013 1005.34 3425 3331 664.1
B 5 200 638278 956.06 3425 3331 664.1
C 1 192 5588456 7649.08 3272 3234 730.2
C 14 223 3787198 5182.22 3272 3234 730.2
C 12 175 1018748 1390.77 3272 3234 730.2
D 13 223 1543958 1962.17 3313 3197 785.2
D 13 114 1396238 1774.04 3313 3197 785.2
D 12 233 1229883 1562.19 3313 3197 785.2

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