ASTROSAT CZTI

Data Quality Report

Orbit 20170630_G05_230T06_9000001350_level2

Creation date: 2017-09-24T08:29:03.576528
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/AS1G05_230T06_9000001350cztM0_level2.evt modeM0/AS1G05_230T06_9000001350cztM0_level2_quad_clean.evt
Size (bytes)10,548,529,9201,854,547,200
Size9.8 GB 1.7 GB
Events in quadrant A86,459,36211,628,577
Events in quadrant B69,923,62311,964,603
Events in quadrant C72,115,05211,651,384
Events in quadrant D81,385,05911,194,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028560
B029140
C029120
D029020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02370
C02360
D02350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03517790
B03000760
C03130650
D03362620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14086525121.783268%
B14244014911.046757%
C14272442712.992489%
D14179726781.888615%

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 185447 147497 299 299 0.16% 0.20%
B 185447 148620 57 57 0.03% 0.04%
C 185447 149243 1559 1559 0.84% 1.04%
D 185447 148366 1548 1548 0.83% 1.04%

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 5 11047307 3234.08 17025 16729 3410.7
A 1 162 4252493 1241.89 17025 16729 3410.7
A 1 178 1828973 531.34 17025 16729 3410.7
B 0 214 1098933 331.81 17286 16877 3261.1
B 0 219 558325 166.03 17286 16877 3261.1
B 12 111 354503 103.53 17286 16877 3261.1
C 4 254 7690616 2034.75 16404 16477 3771.5
C 9 68 258610 64.2 16404 16477 3771.5
C 14 234 148947 35.12 16404 16477 3771.5
D 8 195 4940475 1206.57 16437 16032 4081.4
D 1 52 4802752 1172.82 16437 16032 4081.4
D 12 233 3105384 756.94 16437 16032 4081.4

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