ASTROSAT CZTI

Data Quality Report

Orbit 20201015_C05_013T06_9000003920_level2

Creation date: 2021-01-07T19:03:09.963723
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/AS1C05_013T06_9000003920cztM0_level2_bc.evt modeM0/AS1C05_013T06_9000003920cztM0_level2_quad_clean.evt
Size (bytes)792,426,240374,443,200
Size755.7 MB 357.1 MB
Events in quadrant A4,182,3482,512,412
Events in quadrant B4,514,9422,544,239
Events in quadrant C4,024,0842,459,102
Events in quadrant D9,841,1852,380,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429500
B0442970
C0429050
D0606560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20997690.328618%
B209972101.000143%
C209972010.957280%
D209979514.529218%

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 22447 20997 0 0 0.00% 0.00%
B 22447 20997 13 13 0.06% 0.06%
C 22447 20997 0 0 0.00% 0.00%
D 22447 20997 376 376 1.68% 1.79%

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 13 248 48158 203.6 1061 1043 231.4
A 13 254 34293 143.68 1061 1043 231.4
A 13 252 17503 71.13 1061 1043 231.4
B 5 172 123033 593.79 1064 1036 205.5
B 10 245 92135 443.4 1064 1036 205.5
B 7 205 61685 295.2 1064 1036 205.5
C 2 16 32943 130.07 1027 1024 245.4
C 8 128 13231 49.74 1027 1024 245.4
C 15 208 10492 38.58 1027 1024 245.4
D 1 52 5110868 20582.46 1029 1001 248.3
D 2 250 249072 999.23 1029 1001 248.3
D 12 233 124701 498.26 1029 1001 248.3

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