ASTROSAT CZTI

Data Quality Report

Orbit 42308

Creation date: 2024-06-27T22:38:04.910068
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/AS1P01_999T99_9000005772_42308cztM0_level2.fits modeM0/AS1P01_999T99_9000005772_42308cztM0_level2_quad_clean.evt
Size (bytes)405,959,040114,721,920
Size387.2 MB 109.4 MB
Events in quadrant A3,708,805756,889
Events in quadrant B3,276,855773,432
Events in quadrant C3,334,781750,675
Events in quadrant D4,144,358688,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153752
B0150642
C0148402
D0176882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7228120.166021%
B7228280.387382%
C7228130.179856%
D72281381.909242%

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 8541 7229 11 11 0.13% 0.15%
B 8541 7229 8 8 0.09% 0.11%
C 8541 7229 7 7 0.08% 0.10%
D 8541 7229 116 116 1.36% 1.60%

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 687605 4342.32 769 752 158.2
A 7 3 39962 247.89 769 752 158.2
A 3 137 8803 50.9 769 752 158.2
B 4 171 161622 1072.76 765 742 150.0
B 15 35 44634 292.67 765 742 150.0
B 0 245 34878 227.62 765 742 150.0
C 15 214 300089 1720.34 749 754 174.0
C 15 159 85877 489.22 749 754 174.0
C 12 249 20308 112.38 749 754 174.0
D 1 52 640710 3552.26 744 721 180.2
D 12 6 248628 1376.01 744 721 180.2
D 12 233 193506 1070.05 744 721 180.2

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