ASTROSAT CZTI

Data Quality Report

Orbit 33899

Creation date: 2024-06-27T20:53:54.539687
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/AS1T04_090T01_9000004840_33899cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33899cztM0_level2_quad_clean.evt
Size (bytes)518,535,36071,602,560
Size494.5 MB 68.3 MB
Events in quadrant A4,539,742446,827
Events in quadrant B2,961,856480,009
Events in quadrant C2,984,173459,075
Events in quadrant D4,863,749415,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168572
B0119491
C0117641
D0182761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52474678.900324%
B52471021.943968%
C5247811.543739%
D52472394.554984%

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 5248 376 376 5.25% 7.16%
B 7160 5248 66 66 0.92% 1.26%
C 7160 5248 66 66 0.92% 1.26%
D 7160 5248 207 207 2.89% 3.94%

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 15 169 2095860 17025.08 627 615 123.1
A 10 83 11401 87.64 627 615 123.1
A 13 6 9810 74.71 627 615 123.1
B 5 172 310579 2631.72 630 615 117.8
B 5 255 54846 460.44 630 615 117.8
B 3 112 36893 308.01 630 615 117.8
C 0 10 269512 1912.74 615 620 140.6
C 15 214 230651 1636.31 615 620 140.6
C 3 233 60526 426.14 615 620 140.6
D 12 235 919803 6243.98 606 588 147.2
D 1 52 757373 5140.64 606 588 147.2
D 8 195 559365 3795.62 606 588 147.2

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