ASTROSAT CZTI

Data Quality Report

Orbit 20180915_G08_012T01_9000002370_level2

Creation date: 2018-10-01T12:37:49.424790
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/AS1G08_012T01_9000002370cztM0_level2_bc.evt modeM0/AS1G08_012T01_9000002370cztM0_level2_quad_clean.evt
Size (bytes)4,298,590,0801,783,572,480
Size4.0 GB 1.7 GB
Events in quadrant A30,243,62511,211,229
Events in quadrant B29,367,83411,424,362
Events in quadrant C29,457,38411,106,079
Events in quadrant D31,864,72310,983,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02889950
B02874010
C02906840
D02950760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027620
B027620
C027620
D027620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13574215001.105037%
B13574216141.189020%
C13574223791.752589%
D13574215521.143345%

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 161721 135727 32 32 0.02% 0.02%
B 161720 135725 2 2 0.00% 0.00%
C 161720 135729 34 34 0.02% 0.03%
D 161720 135730 133 133 0.08% 0.10%

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 3 80 1833040 1183.33 7206 7075 1543.1
A 15 223 342886 217.62 7206 7075 1543.1
A 9 143 125468 76.73 7206 7075 1543.1
B 0 230 313567 225.74 7303 7120 1357.5
B 0 229 211251 150.37 7303 7120 1357.5
B 4 48 192293 136.4 7303 7120 1357.5
C 3 233 1315851 812.74 7043 7017 1610.4
C 9 236 689696 423.92 7043 7017 1610.4
C 15 48 124231 72.79 7043 7017 1610.4
D 1 52 1617136 984.15 7201 6964 1636.1
D 13 232 1072846 651.47 7201 6964 1636.1
D 2 152 730890 442.47 7201 6964 1636.1

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