ASTROSAT CZTI

Data Quality Report

Orbit 20180810_T02_085T01_9000002296_level2

Creation date: 2018-08-13T16:07:55.379545
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/AS1T02_085T01_9000002296cztM0_level2_bc.evt modeM0/AS1T02_085T01_9000002296cztM0_level2_quad_clean.evt
Size (bytes)4,256,818,5601,398,997,440
Size4.0 GB 1.3 GB
Events in quadrant A28,279,9508,921,144
Events in quadrant B24,648,0089,051,299
Events in quadrant C25,913,2498,724,049
Events in quadrant D42,937,1228,489,262

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021380
B021380
C021380
D021380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02428160
B02257220
C02298440
D02935730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10489031793.030794%
B10489015911.516827%
C10489017651.682715%
D10489063796.081609%

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 121206 104887 112 112 0.09% 0.11%
B 121207 104892 12 12 0.01% 0.01%
C 121206 104891 2 2 0.00% 0.00%
D 121206 104885 918 918 0.76% 0.88%

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 14 238 3502184 2947.92 5567 5473 1186.2
A 0 253 2063013 1734.62 5567 5473 1186.2
A 14 237 988014 828.34 5567 5473 1186.2
B 0 189 557327 531.93 5621 5493 1037.4
B 4 142 507286 483.7 5621 5493 1037.4
B 0 229 230473 216.87 5621 5493 1037.4
C 3 233 4671373 3677.12 5417 5402 1268.9
C 0 207 165280 126.0 5417 5402 1268.9
C 7 247 137788 104.33 5417 5402 1268.9
D 1 52 11587748 9166.15 5449 5273 1263.6
D 5 222 5017643 3966.69 5449 5273 1263.6
D 12 221 3450474 2726.47 5449 5273 1263.6

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