ASTROSAT CZTI

Data Quality Report

Orbit 20200311_T03_182T01_9000003560_level2

Creation date: 2020-03-14T17:00:22.393972
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/AS1T03_182T01_9000003560cztM0_level2_bc.evt modeM0/AS1T03_182T01_9000003560cztM0_level2_quad_clean.evt
Size (bytes)3,235,795,2001,034,461,440
Size3.0 GB 986.5 MB
Events in quadrant A17,477,0496,582,031
Events in quadrant B19,836,7856,639,753
Events in quadrant C17,582,9456,389,556
Events in quadrant D37,623,6286,207,023

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016380
B016380
C016380
D016380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01675600
B01776430
C01688940
D02356730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A804538241.024200%
B8045313811.716530%
C8045312291.527600%
D8045336434.528110%

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 93403 80452 2 2 0.00% 0.00%
B 93403 80449 73 73 0.08% 0.09%
C 93403 80452 1 1 0.00% 0.00%
D 93403 80448 620 620 0.66% 0.77%

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 2 250 197498 201.74 4451 4370 957.3
A 13 254 131781 133.09 4451 4370 957.3
A 6 16 63874 62.16 4451 4370 957.3
B 0 197 858135 1016.07 4460 4349 840.3
B 0 245 680430 804.59 4460 4349 840.3
B 0 189 394723 464.58 4460 4349 840.3
C 7 247 720373 708.31 4289 4279 1011.0
C 0 239 144024 138.23 4289 4279 1011.0
C 10 91 129451 123.81 4289 4279 1011.0
D 8 195 8313732 8208.35 4337 4190 1012.3
D 1 52 4727404 4665.69 4337 4190 1012.3
D 12 218 3977760 3925.18 4337 4190 1012.3

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