ASTROSAT CZTI

Data Quality Report

Orbit 20160301_T01_029T01_9000000352_level2

Creation date: 2017-10-27T00:34:42.219325
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/AS1T01_029T01_9000000352cztM0_level2.evt modeM0/AS1T01_029T01_9000000352cztM0_level2_quad_clean.evt
Size (bytes)4,936,478,400520,750,080
Size4.6 GB 496.6 MB
Events in quadrant A19,338,9843,336,878
Events in quadrant B40,083,4293,266,922
Events in quadrant C22,293,4963,280,739
Events in quadrant D64,811,6532,839,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0904820
B01507440
C0969030
D02238950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A443602020.455365%
B4436043119.718215%
C443604451.003156%
D443601195426.947701%

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 47864 44363 5 5 0.01% 0.01%
B 47864 44362 2485 2485 5.19% 5.60%
C 47864 44361 186 186 0.39% 0.42%
D 47865 44361 10085 10085 21.07% 22.73%

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 0 149 182383 177.47 4953 4837 1000.5
A 0 226 73117 68.25 4953 4837 1000.5
A 12 194 56236 51.38 4953 4837 1000.5
B 0 85 20156097 21907.43 4915 4784 919.8
B 8 3 447383 481.17 4915 4784 919.8
B 4 48 283298 302.78 4915 4784 919.8
C 5 234 1405864 1260.74 4827 4838 1111.3
C 14 223 1251385 1121.73 4827 4838 1111.3
C 9 247 294232 260.42 4827 4838 1111.3
D 9 66 44796995 44015.34 4334 4229 1017.7
D 8 195 3162337 3103.3 4334 4229 1017.7
D 6 112 153261 146.44 4334 4229 1017.7

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