ASTROSAT CZTI

Data Quality Report

Orbit 30976

Creation date: 2024-06-27T20:21:50.245144
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/AS1A10_071T42_9000004476_30976cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30976cztM0_level2_quad_clean.evt
Size (bytes)540,780,48097,349,760
Size515.7 MB 92.8 MB
Events in quadrant A3,234,447656,161
Events in quadrant B5,129,945665,888
Events in quadrant C3,899,774606,029
Events in quadrant D3,698,102591,652

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132602
B0190732
C0154642
D0149192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132270.440313%
B6132921.500326%
C61322634.288976%
D6132991.614481%

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 7507 6133 0 0 0.00% 0.00%
B 7507 6133 6 6 0.08% 0.10%
C 7507 6133 143 143 1.90% 2.33%
D 7507 6133 83 83 1.11% 1.35%

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 13 254 11851 66.29 839 826 166.3
A 3 137 7622 40.86 839 826 166.3
A 0 226 7043 37.38 839 826 166.3
B 6 159 1759469 11264.91 837 819 156.1
B 0 190 37680 236.11 837 819 156.1
B 6 36 22918 141.55 837 819 156.1
C 0 10 665257 3625.09 784 792 183.3
C 14 238 130215 706.08 784 792 183.3
C 3 233 15685 81.25 784 792 183.3
D 8 195 277594 1473.25 791 772 187.9
D 13 249 245045 1300.02 791 772 187.9
D 2 250 88735 468.14 791 772 187.9

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