ASTROSAT CZTI

Data Quality Report

Orbit 20170905_G07_027T01_9000001516_level2

Creation date: 2017-10-18T12:18:37.418368
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_027T01_9000001516cztM0_level2.evt modeM0/AS1G07_027T01_9000001516cztM0_level2_quad_clean.evt
Size (bytes)938,352,960170,642,880
Size894.9 MB 162.7 MB
Events in quadrant A6,762,5401,085,472
Events in quadrant B6,649,1661,030,638
Events in quadrant C6,280,8871,132,623
Events in quadrant D7,820,761998,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283870
B0281090
C0286410
D0315810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B03010
C03060
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135403512.592319%
B129984403.385136%
C140332942.095062%
D135263732.757652%

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 17040 15183 7 7 0.04% 0.05%
B 17040 14629 81 81 0.48% 0.55%
C 17041 15473 1 1 0.01% 0.01%
D 17041 14641 41 41 0.24% 0.28%

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 15 239 367481 1146.35 1569 1534 319.2
A 3 80 201788 627.31 1569 1534 319.2
A 5 16 69306 212.3 1569 1534 319.2
B 4 239 495295 1715.54 1515 1475 287.9
B 0 214 83625 285.39 1515 1475 287.9
B 11 51 66525 225.99 1515 1475 287.9
C 14 234 14991 36.11 1602 1609 370.6
C 13 61 11935 27.86 1602 1609 370.6
C 8 128 10803 24.81 1602 1609 370.6
D 8 195 730740 1997.62 1519 1476 365.1
D 1 52 628885 1718.62 1519 1476 365.1
D 1 20 480832 1313.07 1519 1476 365.1

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