ASTROSAT CZTI

Data Quality Report

Orbit 39736

Creation date: 2024-06-27T22:08:22.737285
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/AS1A12_022T01_9000005494_39736cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39736cztM0_level2_quad_clean.evt
Size (bytes)388,031,04098,631,360
Size370.1 MB 94.1 MB
Events in quadrant A3,394,405685,112
Events in quadrant B2,720,730705,993
Events in quadrant C3,360,921653,525
Events in quadrant D4,482,999577,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133062
B0111901
C0133311
D0166661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52021412.710496%
B5202340.653595%
C5202701.345636%
D52024498.631296%

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 7295 5203 96 96 1.32% 1.85%
B 7295 5203 17 17 0.23% 0.33%
C 7295 5203 57 57 0.78% 1.10%
D 7295 5203 424 424 5.81% 8.15%

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 462941 3607.69 636 627 128.1
A 13 248 400513 3120.53 636 627 128.1
A 15 174 32331 247.4 636 627 128.1
B 5 172 92082 765.85 630 614 119.4
B 5 255 55591 460.32 630 614 119.4
B 15 85 27815 227.75 630 614 119.4
C 9 187 416357 2945.69 616 621 141.1
C 15 214 229096 1618.86 616 621 141.1
C 15 208 217294 1535.23 616 621 141.1
D 12 227 1872315 12743.22 605 590 146.9
D 12 233 67158 453.21 605 590 146.9
D 2 250 63011 424.98 605 590 146.9

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