ASTROSAT CZTI

Data Quality Report

Orbit 20200316_A07_047T06_9000003576_level2

Creation date: 2020-03-26T19:04:29.013200
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_047T06_9000003576cztM0_level2_bc.evt modeM0/AS1A07_047T06_9000003576cztM0_level2_quad_clean.evt
Size (bytes)1,356,379,200738,002,880
Size1.3 GB 703.8 MB
Events in quadrant A7,964,1935,109,369
Events in quadrant B8,548,0275,143,066
Events in quadrant C8,990,3094,871,411
Events in quadrant D13,149,8944,790,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07260
B07260
C07260
D07260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0742730
B0768700
C0794360
D0918260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A355482330.655452%
B355484831.358726%
C355487122.002926%
D355489182.582424%

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 46538 35543 0 0 0.00% 0.00%
B 46538 35543 35 35 0.08% 0.10%
C 46538 35545 92 92 0.20% 0.26%
D 46538 35543 141 141 0.30% 0.40%

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 13 254 58946 129.34 2057 2027 440.1
A 6 16 18457 37.34 2057 2027 440.1
A 0 226 13609 26.32 2057 2027 440.1
B 0 245 303309 785.57 2057 2018 383.5
B 4 216 86521 220.33 2057 2018 383.5
B 0 189 80530 204.71 2057 2018 383.5
C 10 9 510396 1113.22 1959 1960 456.7
C 2 16 437497 953.61 1959 1960 456.7
C 0 207 201161 436.15 1959 1960 456.7
D 7 238 3893002 8316.05 2009 1945 467.9
D 8 195 876871 1869.91 2009 1945 467.9
D 1 52 292839 621.7 2009 1945 467.9

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