ASTROSAT CZTI

Data Quality Report

Orbit 20191130_A07_054T01_9000003348_level2

Creation date: 2019-12-02T15:03:52.026127
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/AS1A07_054T01_9000003348cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003348cztM0_level2_quad_clean.evt
Size (bytes)2,274,615,3601,191,585,600
Size2.1 GB 1.1 GB
Events in quadrant A15,751,2087,967,481
Events in quadrant B15,616,4817,985,214
Events in quadrant C14,547,3127,734,321
Events in quadrant D18,230,2477,640,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014200
B014200
C014200
D014200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470250
B01496550
C01458490
D01546720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A695326020.865788%
B6953210251.474141%
C695329531.370592%
D695329821.412299%

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 80837 69535 0 0 0.00% 0.00%
B 80837 69534 1 1 0.00% 0.00%
C 80837 69533 0 0 0.00% 0.00%
D 80837 69534 191 191 0.24% 0.27%

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 13 34 1191191 1464.89 3760 3701 810.6
A 13 254 110548 131.81 3760 3701 810.6
A 0 226 24217 25.31 3760 3701 810.6
B 15 33 588112 835.98 3757 3673 699.1
B 0 190 114270 158.2 3757 3673 699.1
B 0 230 103057 142.16 3757 3673 699.1
C 10 222 399237 461.63 3632 3624 857.0
C 10 22 86164 96.31 3632 3624 857.0
C 0 10 35396 37.07 3632 3624 857.0
D 1 52 2448747 2787.19 3730 3608 877.3
D 12 33 353872 399.26 3730 3608 877.3
D 2 234 290041 326.5 3730 3608 877.3

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