ASTROSAT CZTI

Data Quality Report

Orbit 18192

Creation date: 2024-06-27T17:46:30.691005
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/AS1A05_160T02_9000002710_18192cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18192cztM0_level2_quad_clean.evt
Size (bytes)2,475,423,360413,311,680
Size2.3 GB 394.2 MB
Events in quadrant A15,570,4572,601,427
Events in quadrant B16,061,9282,641,791
Events in quadrant C19,390,0352,535,753
Events in quadrant D21,732,3272,484,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06720
B06720
C06720
D06720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0678336
B0688966
C0793246
D0871066

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A328062530.771200%
B328062880.877888%
C3280614914.544900%
D328069913.020789%

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 37911 32812 38 38 0.10% 0.12%
B 37911 32812 23 23 0.06% 0.07%
C 37911 32812 550 550 1.45% 1.68%
D 37911 32812 692 692 1.83% 2.11%

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 15 174 223437 273.81 3978 3891 801.8
A 4 2 64246 75.27 3978 3891 801.8
A 0 226 34652 38.36 3978 3891 801.8
B 0 229 154877 200.95 3957 3856 751.5
B 7 220 123379 159.04 3957 3856 751.5
B 0 189 105334 135.03 3957 3856 751.5
C 4 254 4194166 4795.04 3742 3761 873.9
C 14 238 580920 660.44 3742 3761 873.9
C 13 61 26772 26.33 3742 3761 873.9
D 7 238 3289305 3539.38 3829 3720 928.3
D 5 222 1921330 2065.74 3829 3720 928.3
D 8 230 658726 705.6 3829 3720 928.3

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