ASTROSAT CZTI

Data Quality Report

Orbit 20170509_G07_005T02_9000001214_level2

Creation date: 2017-09-23T21:45:44.167481
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/AS1G07_005T02_9000001214cztM0_level2.evt modeM0/AS1G07_005T02_9000001214cztM0_level2_quad_clean.evt
Size (bytes)1,326,720,960316,569,600
Size1.2 GB 301.9 MB
Events in quadrant A9,318,1562,075,897
Events in quadrant B9,464,6012,096,131
Events in quadrant C10,324,7702,039,740
Events in quadrant D9,717,1361,997,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413910
B0416800
C0449540
D0430590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200342201.098133%
B200342301.148048%
C200344542.266148%
D200342341.168014%

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 22849 20035 18 18 0.08% 0.09%
B 22849 20035 41 41 0.18% 0.20%
C 22849 20036 285 285 1.25% 1.42%
D 22849 20036 91 91 0.40% 0.45%

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 13 251 418300 900.13 2283 2229 462.2
A 15 174 78752 165.55 2283 2229 462.2
A 5 16 35526 72.03 2283 2229 462.2
B 10 16 231915 524.79 2296 2239 437.7
B 0 214 74179 164.38 2296 2239 437.7
B 5 255 73757 163.41 2296 2239 437.7
C 4 254 1030616 2026.09 2206 2213 507.6
C 1 16 543555 1066.51 2206 2213 507.6
C 14 234 99168 191.01 2206 2213 507.6
D 7 71 577973 976.75 2200 2151 589.5
D 11 129 222511 373.79 2200 2151 589.5
D 13 122 162287 271.63 2200 2151 589.5

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