ASTROSAT CZTI

Data Quality Report

Orbit 35276

Creation date: 2022-04-07T14:47:04.993515
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_082T01_9000005056_35276cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35276cztM0_level2_quad_clean.evt
Size (bytes)489,643,20073,408,320
Size467.0 MB 70.0 MB
Events in quadrant A2,687,536487,714
Events in quadrant B4,362,431467,364
Events in quadrant C3,679,996465,576
Events in quadrant D3,759,372450,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108163
B0162432
C0143482
D0145722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011160.319298%
B50114999.958092%
C50111853.691878%
D50112154.290561%

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 7074 5012 5 5 0.07% 0.10%
B 7074 5012 364 364 5.15% 7.26%
C 7074 5012 157 157 2.22% 3.13%
D 7074 5012 174 174 2.46% 3.47%

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 10 83 93446 712.64 651 638 130.2
A 15 174 58526 444.5 651 638 130.2
A 13 6 11666 84.68 651 638 130.2
B 5 236 1161343 10028.04 616 602 115.7
B 5 172 533119 4600.59 616 602 115.7
B 14 207 176564 1520.2 616 602 115.7
C 0 10 930888 6506.13 621 627 143.0
C 15 214 208862 1456.37 621 627 143.0
C 0 207 65671 454.91 621 627 143.0
D 8 230 307467 2032.69 624 609 151.0
D 10 118 243629 1609.81 624 609 151.0
D 13 249 185756 1226.45 624 609 151.0

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