ASTROSAT CZTI

Data Quality Report

Orbit 40320

Creation date: 2024-06-27T22:14:55.730914
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_056T02_9000005538_40320cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40320cztM0_level2_quad_clean.evt
Size (bytes)389,088,00098,035,200
Size371.1 MB 93.5 MB
Events in quadrant A3,408,443669,685
Events in quadrant B2,888,110687,304
Events in quadrant C3,178,595640,022
Events in quadrant D4,479,597568,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137983
B0125122
C0128992
D0174142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5757560.972729%
B5757230.399514%
C57571342.327601%
D57573856.687511%

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 7160 5758 38 38 0.53% 0.66%
B 7160 5758 8 8 0.11% 0.14%
C 7160 5758 132 132 1.84% 2.29%
D 7160 5758 353 353 4.93% 6.13%

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 498880 3762.88 643 631 132.4
A 13 248 248800 1874.23 643 631 132.4
A 6 10 79172 593.16 643 631 132.4
B 7 202 116674 929.79 643 626 124.8
B 0 245 68744 545.77 643 626 124.8
B 5 255 49173 388.96 643 626 124.8
C 14 254 452848 3092.98 627 631 146.2
C 15 214 243714 1662.59 627 631 146.2
C 0 10 19701 130.43 627 631 146.2
D 12 227 1091379 7138.74 615 598 152.8
D 12 233 501933 3281.05 615 598 152.8
D 1 47 127727 832.01 615 598 152.8

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