ASTROSAT CZTI

Data Quality Report

Orbit 38653

Creation date: 2024-06-27T21:54:40.169205
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_061T03_9000005390_38653cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38653cztM0_level2_quad_clean.evt
Size (bytes)318,110,40089,856,000
Size303.4 MB 85.7 MB
Events in quadrant A2,966,371599,959
Events in quadrant B2,599,493614,366
Events in quadrant C2,618,493597,329
Events in quadrant D3,183,445542,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118053
B0110732
C0107632
D0128612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231240.458803%
B5231470.898490%
C523160.114701%
D52311212.313133%

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 7114 5232 18 18 0.25% 0.34%
B 7114 5232 34 34 0.48% 0.65%
C 7114 5232 1 1 0.01% 0.02%
D 7114 5232 90 90 1.27% 1.72%

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 429557 3465.14 602 589 123.8
A 15 174 74530 597.28 602 589 123.8
A 9 143 57310 458.18 602 589 123.8
B 5 172 56961 485.75 598 584 116.1
B 5 184 52768 449.62 598 584 116.1
B 5 200 31985 270.55 598 584 116.1
C 15 214 216631 1561.72 593 597 138.3
C 0 10 27062 191.32 593 597 138.3
C 3 110 26730 188.92 593 597 138.3
D 12 233 465294 3197.99 587 571 145.3
D 13 249 129321 885.99 587 571 145.3
D 2 249 103733 709.91 587 571 145.3

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