ASTROSAT CZTI

Data Quality Report

Orbit 20200110_A07_148T05_9000003424_level2

Creation date: 2020-01-13T12:50:13.830759
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_148T05_9000003424cztM0_level2_bc.evt modeM0/AS1A07_148T05_9000003424cztM0_level2_quad_clean.evt
Size (bytes)2,268,161,280731,721,600
Size2.1 GB 697.8 MB
Events in quadrant A16,732,7864,636,387
Events in quadrant B12,820,0884,817,107
Events in quadrant C14,665,0194,634,620
Events in quadrant D20,899,2774,474,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010660
B010660
C010660
D010660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01269840
B01165800
C01227520
D01400330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5248619413.698129%
B5248613012.478756%
C5248616613.164653%
D5248526174.986187%

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 66437 52486 869 869 1.31% 1.66%
B 66437 52482 174 174 0.26% 0.33%
C 66437 52484 26 26 0.04% 0.05%
D 66437 52484 1196 1196 1.80% 2.28%

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 5659883 9173.08 2868 2811 616.7
A 13 254 74076 115.56 2868 2811 616.7
A 0 226 18461 25.38 2868 2811 616.7
B 0 245 1188143 2188.44 2928 2865 541.6
B 0 190 239525 436.96 2928 2865 541.6
B 4 216 40737 69.92 2928 2865 541.6
C 0 10 1948193 2972.28 2817 2812 654.5
C 8 208 1494348 2278.87 2817 2812 654.5
C 2 16 260974 394.44 2817 2812 654.5
D 7 238 7456848 11362.59 2847 2754 656.0
D 1 52 756262 1148.6 2847 2754 656.0
D 1 239 737213 1119.57 2847 2754 656.0

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