ASTROSAT CZTI

Data Quality Report

Orbit 20160331_T01_112T01_9000000406_level2

Creation date: 2020-10-16T17:41:14.113000
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/AS1T01_112T01_9000000406cztM0_level2_bc.evt modeM0/AS1T01_112T01_9000000406cztM0_level2_quad_clean.evt
Size (bytes)6,852,896,6402,546,354,880
Size6.4 GB 2.4 GB
Events in quadrant A45,193,66016,208,512
Events in quadrant B47,227,00416,498,672
Events in quadrant C46,300,78916,108,826
Events in quadrant D55,758,70915,173,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04379670
B04431300
C04410320
D04764230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020860
B020860
C020860
D020860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02950
B02950
C02950
D02950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20519237711.837791%
B20519237841.844126%
C20519231741.546844%
D20519251112.490838%

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 252952 205196 317 317 0.13% 0.15%
B 252952 205190 172 172 0.07% 0.08%
C 252952 205198 226 226 0.09% 0.11%
D 252952 205191 506 506 0.20% 0.25%

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 0 128 4030639 1727.56 10295 10013 2327.4
A 8 15 750328 318.09 10295 10013 2327.4
A 0 149 520520 219.35 10295 10013 2327.4
B 14 167 3293258 1720.6 10510 10221 1908.1
B 10 244 941665 488.16 10510 10221 1908.1
B 6 36 805236 416.66 10510 10221 1908.1
C 2 53 3766980 1677.45 10183 10105 2239.6
C 14 223 1125232 497.91 10183 10105 2239.6
C 10 65 293057 126.34 10183 10105 2239.6
D 13 169 3396964 1440.18 9993 9685 2352.0
D 1 31 2279802 965.2 9993 9685 2352.0
D 13 53 2270940 961.43 9993 9685 2352.0

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