ASTROSAT CZTI

Data Quality Report

Orbit 20190918_T03_141T01_9000003174_level2

Creation date: 2019-09-21T13:15:21.811113
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/AS1T03_141T01_9000003174cztM0_level2_bc.evt modeM0/AS1T03_141T01_9000003174cztM0_level2_quad_clean.evt
Size (bytes)6,864,932,1602,609,089,920
Size6.4 GB 2.4 GB
Events in quadrant A40,957,80716,688,961
Events in quadrant B44,700,78816,958,039
Events in quadrant C39,753,69216,517,786
Events in quadrant D69,476,74515,769,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02990
B02990
C02990
D02990

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03983640
B04100730
C04012480
D05009090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038920
B038940
C038920
D038940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19120318750.980633%
B19119426431.382366%
C19120229021.517767%
D19119382114.294613%

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 232293 191228 0 0 0.00% 0.00%
B 232293 191222 36 36 0.02% 0.02%
C 232293 191228 0 0 0.00% 0.00%
D 232293 191228 1244 1244 0.54% 0.65%

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 13 254 290934 123.64 10563 10382 2269.1
A 15 48 178303 74.0 10563 10382 2269.1
A 0 226 67534 25.19 10563 10382 2269.1
B 0 230 1061933 528.59 10701 10463 1989.2
B 3 64 839034 416.54 10701 10463 1989.2
B 0 190 535337 263.86 10701 10463 1989.2
C 0 239 161299 62.8 10269 10248 2405.2
C 3 233 100059 37.34 10269 10248 2405.2
C 13 61 60094 20.72 10269 10248 2405.2
D 1 52 12455175 4863.8 10257 9977 2558.7
D 7 38 4237049 1652.01 10257 9977 2558.7
D 14 35 3320508 1293.81 10257 9977 2558.7

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