ASTROSAT CZTI

Data Quality Report

Orbit 38952

Creation date: 2024-06-27T21:58:33.349740
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/AS1T05_064T01_9000005416_38952cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38952cztM0_level2_quad_clean.evt
Size (bytes)340,104,96091,169,280
Size324.3 MB 86.9 MB
Events in quadrant A2,746,743625,579
Events in quadrant B2,471,726627,989
Events in quadrant C2,924,949597,403
Events in quadrant D4,049,934552,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113342
B0107231
C0118541
D0155231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5090270.530452%
B5090430.844794%
C5090761.493124%
D50901683.300589%

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 6943 5091 13 13 0.19% 0.26%
B 6943 5091 32 32 0.46% 0.63%
C 6943 5091 74 74 1.07% 1.45%
D 6943 5091 173 173 2.49% 3.40%

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 359649 3103.8 580 571 115.7
A 13 248 82632 709.32 580 571 115.7
A 12 16 28877 244.67 580 571 115.7
B 5 172 139666 1278.52 573 557 108.8
B 0 230 36987 334.82 573 557 108.8
B 0 229 14780 130.72 573 557 108.8
C 14 254 481407 3688.92 566 569 130.3
C 15 214 219016 1675.89 566 569 130.3
C 3 233 5600 38.6 566 569 130.3
D 12 235 587780 4255.21 567 552 138.0
D 12 227 490766 3552.22 567 552 138.0
D 2 250 334835 2422.3 567 552 138.0

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