ASTROSAT CZTI

Data Quality Report

Orbit 02337

Creation date: 2024-06-27T14:16:26.737373
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/AS1T01_056T01_9000000356_02337cztM0_level2.evt modeM0/AS1T01_056T01_9000000356_02337cztM0_level2_quad_clean.evt
Size (bytes)570,888,00082,958,400
Size544.4 MB 79.1 MB
Events in quadrant A3,152,574520,503
Events in quadrant B3,082,822521,418
Events in quadrant C7,662,975491,808
Events in quadrant D2,930,123504,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142532
B0139071
C0275031
D0139521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6807691.013662%
B6807220.323197%
C680780811.870134%
D6807210.308506%

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 7342 6808 34 34 0.46% 0.50%
B 7342 6808 0 0 0.00% 0.00%
C 7342 6808 789 789 10.75% 11.59%
D 7342 6808 6 6 0.08% 0.09%

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 0 149 160791 1004.88 773 753 159.3
A 0 226 23410 142.26 773 753 159.3
A 12 194 8669 49.7 773 753 159.3
B 8 3 27146 172.56 787 764 152.9
B 12 111 10628 64.52 787 764 152.9
B 11 111 9048 54.18 787 764 152.9
C 5 234 4675906 26929.63 735 738 173.6
C 2 53 45474 257.69 735 738 173.6
C 8 112 24938 139.4 735 738 173.6
D 6 112 39771 219.11 744 726 178.2
D 10 172 19464 105.15 744 726 178.2
D 15 194 13585 72.16 744 726 178.2

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