ASTROSAT CZTI

Data Quality Report

Orbit 20200105_A07_138T05_9000003410_level2

Creation date: 2020-01-07T10:15:12.442243
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/AS1A07_138T05_9000003410cztM0_level2_bc.evt modeM0/AS1A07_138T05_9000003410cztM0_level2_quad_clean.evt
Size (bytes)1,723,317,120557,251,200
Size1.6 GB 531.4 MB
Events in quadrant A15,022,4293,487,498
Events in quadrant B9,404,6823,641,799
Events in quadrant C9,609,6813,506,308
Events in quadrant D15,327,9443,396,803

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08420
B08420
C08420
D08420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01056030
B0894010
C0911260
D01091160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4146120294.893756%
B414616571.584622%
C414619152.206893%
D4146114213.427317%

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 47171 41461 1009 1009 2.14% 2.43%
B 47171 41461 33 33 0.07% 0.08%
C 47171 41460 53 53 0.11% 0.13%
D 47171 41460 142 142 0.30% 0.34%

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 6 16 6588229 13947.38 2184 2142 472.2
A 13 254 57914 118.11 2184 2142 472.2
A 0 226 13953 25.01 2184 2142 472.2
B 0 190 213841 499.74 2255 2200 423.5
B 0 189 179397 418.41 2255 2200 423.5
B 4 216 96768 223.3 2255 2200 423.5
C 0 207 621641 1216.93 2166 2157 509.1
C 0 10 574316 1123.96 2166 2157 509.1
C 2 16 59432 112.51 2166 2157 509.1
D 7 238 2449597 4729.71 2187 2106 517.5
D 13 153 1881026 3630.96 2187 2106 517.5
D 1 52 989768 1908.63 2187 2106 517.5

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