ASTROSAT CZTI

Data Quality Report

Orbit 38158

Creation date: 2024-06-27T21:49:08.419280
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/AS1A07_145T01_9000005370_38158cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38158cztM0_level2_quad_clean.evt
Size (bytes)323,372,160100,319,040
Size308.4 MB 95.7 MB
Events in quadrant A2,944,979680,265
Events in quadrant B2,714,559705,574
Events in quadrant C2,683,105672,200
Events in quadrant D3,225,446618,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117633
B0111662
C0108082
D0131072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5163210.406740%
B5163410.794112%
C516390.174317%
D5163260.503583%

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 7286 5164 13 13 0.18% 0.25%
B 7286 5164 26 26 0.36% 0.50%
C 7286 5164 5 5 0.07% 0.10%
D 7286 5164 22 22 0.30% 0.43%

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 357342 2842.41 629 621 125.5
A 12 16 49670 390.83 629 621 125.5
A 9 143 46642 366.7 629 621 125.5
B 4 171 120231 1003.56 630 615 119.2
B 5 172 56574 469.49 630 615 119.2
B 15 85 25065 205.13 630 615 119.2
C 15 214 217394 1531.18 617 623 141.6
C 2 16 21724 149.05 617 623 141.6
C 0 10 21048 144.27 617 623 141.6
D 10 203 385610 2610.98 611 593 147.5
D 12 235 158003 1067.47 611 593 147.5
D 7 223 107091 722.21 611 593 147.5

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