ASTROSAT CZTI

Data Quality Report

Orbit 39980

Creation date: 2024-06-27T22:10:51.997487
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_054T03_9000005516_39980cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39980cztM0_level2_quad_clean.evt
Size (bytes)312,540,48092,266,560
Size298.1 MB 88.0 MB
Events in quadrant A2,755,584618,040
Events in quadrant B2,653,666640,117
Events in quadrant C2,760,590611,170
Events in quadrant D2,982,884550,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115713
B0116032
C0115822
D0127112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5343110.205877%
B5343440.823507%
C5343460.860940%
D53431222.283361%

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 8898 5345 4 4 0.04% 0.07%
B 8898 5344 21 21 0.24% 0.39%
C 8898 5344 40 40 0.45% 0.75%
D 8898 5344 120 120 1.35% 2.25%

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 445158 3666.22 593 583 121.3
A 13 254 8739 67.26 593 583 121.3
A 3 137 6299 47.14 593 583 121.3
B 4 171 257289 2232.14 593 577 115.0
B 5 255 23494 199.27 593 577 115.0
B 12 111 14065 117.28 593 577 115.0
C 15 214 223756 1646.48 580 583 135.5
C 0 10 152074 1117.64 580 583 135.5
C 14 254 66964 489.73 580 583 135.5
D 2 249 361943 2600.31 568 553 139.0
D 1 47 150380 1078.05 568 553 139.0
D 12 227 116508 834.33 568 553 139.0

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