ASTROSAT CZTI

Data Quality Report

Orbit 20190321_A05_173T01_9000002812_level2

Creation date: 2019-03-25T11:57:20.661786
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/AS1A05_173T01_9000002812cztM0_level2_bc.evt modeM0/AS1A05_173T01_9000002812cztM0_level2_quad_clean.evt
Size (bytes)6,151,904,6402,192,448,960
Size5.7 GB 2.0 GB
Events in quadrant A37,875,56014,049,953
Events in quadrant B41,604,98614,149,540
Events in quadrant C40,970,25313,556,516
Events in quadrant D54,364,58013,087,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034440
B034440
C034440
D034440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03552690
B03735600
C03760810
D04192000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16882119631.162770%
B16882131141.844557%
C16882140292.386551%
D16882172284.281458%

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 203133 168826 34 34 0.02% 0.02%
B 203133 168822 48 48 0.02% 0.03%
C 203133 168827 82 82 0.04% 0.05%
D 203133 168814 1325 1325 0.65% 0.78%

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 8 144 1194305 585.6 9168 8983 2024.1
A 4 2 306455 146.96 9168 8983 2024.1
A 15 174 268427 128.18 9168 8983 2024.1
B 10 245 1012024 576.59 9178 8951 1739.7
B 7 220 978040 557.06 9178 8951 1739.7
B 0 229 818815 465.53 9178 8951 1739.7
C 3 233 5532711 2705.42 8730 8693 2041.8
C 0 207 1034257 502.28 8730 8693 2041.8
C 9 54 618056 298.44 8730 8693 2041.8
D 12 110 7225105 3538.07 8828 8521 2039.7
D 7 238 5061044 2477.1 8828 8521 2039.7
D 7 38 3209760 1569.47 8828 8521 2039.7

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