ASTROSAT CZTI

Data Quality Report

Orbit 43947

Creation date: 2024-06-27T22:57:31.996187
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/AS1A13_025T01_9000005920_43947cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43947cztM0_level2_quad_clean.evt
Size (bytes)502,554,240111,280,320
Size479.3 MB 106.1 MB
Events in quadrant A5,467,191743,335
Events in quadrant B3,854,554752,643
Events in quadrant C3,509,341736,392
Events in quadrant D5,228,294649,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212842
B0162582
C0153862
D0202913

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70031291.842068%
B70031502.141939%
C7003711.013851%
D70024386.255356%

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 7848 7004 10 10 0.13% 0.14%
B 7848 7004 86 86 1.10% 1.23%
C 7848 7004 40 40 0.51% 0.57%
D 7847 7003 355 355 4.52% 5.07%

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 1322915 8301.23 772 755 159.3
A 15 222 1048535 6578.53 772 755 159.3
A 15 223 40860 251.8 772 755 159.3
B 0 200 163386 1075.49 768 744 151.2
B 4 171 141848 933.06 768 744 151.2
B 4 222 141845 933.04 768 744 151.2
C 1 241 265155 1469.47 762 767 179.9
C 3 233 166432 920.77 762 767 179.9
C 14 254 49281 269.64 762 767 179.9
D 7 204 767883 4014.46 749 726 191.1
D 12 17 260250 1358.06 749 726 191.1
D 5 235 238115 1242.23 749 726 191.1

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