ASTROSAT CZTI

Data Quality Report

Orbit 45161

Creation date: 2024-06-27T23:10:05.914668
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_049T04_9000006048_45161cztM0_level2.fits modeM0/AS1A13_049T04_9000006048_45161cztM0_level2_quad_clean.evt
Size (bytes)719,242,560117,840,960
Size685.9 MB 112.4 MB
Events in quadrant A12,327,131613,641
Events in quadrant B4,267,194844,510
Events in quadrant C3,749,748836,279
Events in quadrant D5,666,953723,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421591
B0178941
C0168111
D0222931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7908263533.320688%
B79083023.818918%
C79081171.479514%
D79085877.422863%

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 7968 7909 1799 1799 22.58% 22.75%
B 7968 7909 46 46 0.58% 0.58%
C 7968 7909 39 39 0.49% 0.49%
D 7968 7909 456 456 5.72% 5.77%

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 15 223 6313106 36600.97 822 801 172.5
A 10 83 2538362 14713.67 822 801 172.5
A 13 248 125205 721.34 822 801 172.5
B 5 172 220894 1218.59 902 871 180.6
B 0 155 92091 505.22 902 871 180.6
B 0 183 90603 496.98 902 871 180.6
C 1 3 109081 515.07 893 897 210.0
C 12 2 61889 290.39 893 897 210.0
C 3 233 58547 274.48 893 897 210.0
D 13 249 565569 2583.76 869 842 218.6
D 13 171 431308 1969.48 869 842 218.6
D 5 235 399537 1824.13 869 842 218.6

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