ASTROSAT CZTI

Data Quality Report

Orbit 38755

Creation date: 2024-06-27T21:56:01.777376
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_054T01_9000005392_38755cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38755cztM0_level2_quad_clean.evt
Size (bytes)346,141,44089,648,640
Size330.1 MB 85.5 MB
Events in quadrant A2,912,578602,120
Events in quadrant B2,471,852618,032
Events in quadrant C2,768,484582,198
Events in quadrant D4,241,624535,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117713
B0109842
C0115112
D0164832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5377410.762507%
B5377150.278966%
C5377430.799702%
D53771011.878371%

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 7051 5378 29 29 0.41% 0.54%
B 7051 5378 7 7 0.10% 0.13%
C 7051 5378 50 50 0.71% 0.93%
D 7051 5378 105 105 1.49% 1.95%

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 408090 3328.25 601 590 122.4
A 9 143 116605 947.55 601 590 122.4
A 13 248 33818 271.39 601 590 122.4
B 4 171 46915 399.71 597 582 115.9
B 15 85 39932 339.47 597 582 115.9
B 0 221 18802 157.18 597 582 115.9
C 15 214 240622 1754.43 583 587 136.8
C 0 10 130421 948.96 583 587 136.8
C 14 254 116663 848.4 583 587 136.8
D 2 16 1509052 10418.51 582 564 144.8
D 10 118 199101 1371.21 582 564 144.8
D 12 233 95808 657.81 582 564 144.8

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