ASTROSAT CZTI

Data Quality Report

Orbit 20776

Creation date: 2024-06-27T18:19:28.719912
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/AS1A05_013T01_9000003070_20776cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20776cztM0_level2_quad_clean.evt
Size (bytes)530,156,160107,098,560
Size505.6 MB 102.1 MB
Events in quadrant A3,617,604702,404
Events in quadrant B3,746,963695,185
Events in quadrant C3,594,788674,684
Events in quadrant D4,602,059663,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156911
B0159464
C0156253
D01867516

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7291320.438897%
B7290731.001372%
C7290540.740741%
D7288931.276070%

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 7626 7292 15 15 0.20% 0.21%
B 7626 7292 25 25 0.33% 0.34%
C 7626 7292 7 7 0.09% 0.10%
D 7626 7291 67 67 0.88% 0.92%

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 5 16 154384 865.17 870 850 177.5
A 10 253 104259 582.71 870 850 177.5
A 13 252 17807 95.55 870 850 177.5
B 7 220 170154 1024.86 858 837 165.2
B 0 189 35331 208.79 858 837 165.2
B 0 182 32300 190.44 858 837 165.2
C 9 54 260150 1355.01 820 824 191.4
C 14 238 129437 672.02 820 824 191.4
C 13 61 5883 26.43 820 824 191.4
D 1 52 690799 3390.44 835 810 203.5
D 1 20 619464 3039.92 835 810 203.5
D 12 227 82028 399.08 835 810 203.5

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