ASTROSAT CZTI

Data Quality Report

Orbit 13872

Creation date: 2024-06-27T16:47:13.865149
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/AS1A04_115T02_9000002042_13872cztM0_level2.evt modeM0/AS1A04_115T02_9000002042_13872cztM0_level2_quad_clean.evt
Size (bytes)593,714,88093,303,360
Size566.2 MB 89.0 MB
Events in quadrant A4,073,400561,065
Events in quadrant B4,408,046564,191
Events in quadrant C4,063,697562,862
Events in quadrant D4,858,649547,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177434
B0181013
C0177743
D0201683

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84982593.047776%
B84982923.436103%
C84981962.306425%
D84983133.683220%

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 9070 8499 0 0 0.00% 0.00%
B 9070 8500 8 8 0.09% 0.09%
C 9070 8501 0 0 0.00% 0.00%
D 9070 8501 115 115 1.27% 1.35%

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 23 29352 132.48 1042 1016 213.9
A 1 162 13892 60.2 1042 1016 213.9
A 0 226 10947 46.43 1042 1016 213.9
B 10 244 298133 1461.84 1033 1005 203.3
B 4 80 51528 248.57 1033 1005 203.3
B 12 111 25715 121.57 1033 1005 203.3
C 3 233 70871 292.6 1013 1018 238.7
C 8 112 26112 105.11 1013 1018 238.7
C 5 254 11077 42.13 1013 1018 238.7
D 5 222 846804 3507.18 1004 980 241.2
D 13 189 42085 170.44 1004 980 241.2
D 1 52 33672 135.55 1004 980 241.2

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