ASTROSAT CZTI

Data Quality Report

Orbit 45174

Creation date: 2024-06-27T23:10:14.154715
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_049T05_9000006050_45174cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45174cztM0_level2_quad_clean.evt
Size (bytes)579,363,840126,544,320
Size552.5 MB 120.7 MB
Events in quadrant A7,043,355818,699
Events in quadrant B4,187,233867,480
Events in quadrant C3,834,157850,964
Events in quadrant D5,763,760740,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263560
B0175840
C0170350
D0224740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79634605.776717%
B79631882.360919%
C7964700.878955%
D79644936.190357%

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 7963 7963 283 283 3.55% 3.55%
B 7963 7963 29 29 0.36% 0.36%
C 7964 7964 45 45 0.57% 0.57%
D 7964 7964 427 427 5.36% 5.36%

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 2671588 14008.27 909 889 190.7
A 15 223 737036 3861.22 909 889 190.7
A 15 174 104486 543.38 909 889 190.7
B 3 112 284412 1554.22 913 883 182.4
B 5 32 84640 459.13 913 883 182.4
B 0 183 81274 440.68 913 883 182.4
C 1 3 193238 905.89 902 907 212.3
C 3 233 54631 253.04 902 907 212.3
C 14 254 31047 141.96 902 907 212.3
D 13 249 1527942 6842.45 883 855 223.2
D 1 52 182988 816.09 883 855 223.2
D 2 249 140375 625.15 883 855 223.2

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