ASTROSAT CZTI

Data Quality Report

Orbit 20201102_A09_038T32_9000003962_level2

Creation date: 2021-01-07T15:35:20.412459
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/AS1A09_038T32_9000003962cztM0_level2_bc.evt modeM0/AS1A09_038T32_9000003962cztM0_level2_quad_clean.evt
Size (bytes)185,425,92078,808,320
Size176.8 MB 75.2 MB
Events in quadrant A1,033,933519,214
Events in quadrant B1,079,187524,779
Events in quadrant C1,155,253494,160
Events in quadrant D1,981,689480,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107050
B0108010
C0114380
D0137210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5246360.686237%
B5246330.629051%
C5246781.486847%
D52461783.393061%

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 5981 5246 0 0 0.00% 0.00%
B 5981 5246 0 0 0.00% 0.00%
C 5981 5247 0 0 0.00% 0.00%
D 5981 5246 30 30 0.50% 0.57%

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 8 192 8593 136.97 264 258 60.9
A 13 254 8394 133.7 264 258 60.9
A 13 248 2973 44.62 264 258 60.9
B 15 32 12875 232.71 266 258 54.2
B 10 245 11787 212.64 266 258 54.2
B 0 230 9755 175.16 266 258 54.2
C 15 208 127226 2039.64 252 250 62.3
C 2 16 46603 744.58 252 250 62.3
C 10 22 4811 73.26 252 250 62.3
D 1 52 807089 13130.32 254 244 61.4
D 7 80 42888 693.97 254 244 61.4
D 2 250 38365 620.37 254 244 61.4

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