ASTROSAT CZTI

Data Quality Report

Orbit 43778

Creation date: 2024-06-27T22:55:40.054917
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/AS1A13_026T01_9000005904_43778cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43778cztM0_level2_quad_clean.evt
Size (bytes)653,575,68097,110,720
Size623.3 MB 92.6 MB
Events in quadrant A4,580,843706,136
Events in quadrant B4,210,392743,140
Events in quadrant C5,757,051640,888
Events in quadrant D9,195,522444,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181675
B0163641
C0207761
D0313841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58023896.704585%
B58032804.825090%
C580393116.043426%
D5803223738.549026%

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 7007 5803 151 151 2.15% 2.60%
B 7008 5804 117 117 1.67% 2.02%
C 7008 5804 824 824 11.76% 14.20%
D 7008 5803 1910 1910 27.25% 32.91%

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 837168 5611.14 725 710 149.1
A 15 223 584870 3918.67 725 710 149.1
A 13 248 213377 1426.62 725 710 149.1
B 0 200 421701 3026.43 719 699 139.1
B 5 235 414556 2975.07 719 699 139.1
B 5 172 121286 866.86 719 699 139.1
C 15 174 1953066 12508.94 672 679 156.1
C 15 158 784433 5021.51 672 679 156.1
C 15 157 113400 722.2 672 679 156.1
D 12 33 4666852 29219.58 623 603 159.7
D 5 235 378705 2367.64 623 603 159.7
D 12 128 377751 2361.66 623 603 159.7

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