ASTROSAT CZTI

Data Quality Report

Orbit 16441

Creation date: 2024-06-27T17:22:43.778353
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_069T04_9000002428_16441cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16441cztM0_level2_quad_clean.evt
Size (bytes)836,930,88082,370,880
Size798.2 MB 78.6 MB
Events in quadrant A12,511,360339,073
Events in quadrant B3,665,572608,445
Events in quadrant C5,181,348565,403
Events in quadrant D3,568,479546,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413273
B0149722
C0199852
D0148252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216449172.249035%
B6216991.592664%
C62163615.807593%
D62161171.882239%

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 7456 6216 4292 4292 57.56% 69.05%
B 7457 6217 34 34 0.46% 0.55%
C 7457 6217 52 52 0.70% 0.84%
D 7457 6218 82 82 1.10% 1.32%

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 10769004 119533.02 448 438 90.1
A 15 223 10901 116.14 448 438 90.1
A 3 1 4903 49.56 448 438 90.1
B 15 35 281290 1920.5 780 761 146.1
B 0 229 80414 545.31 780 761 146.1
B 4 173 79284 537.57 780 761 146.1
C 3 233 2131609 12331.54 739 744 172.8
C 14 238 114118 656.11 739 744 172.8
C 4 254 29865 168.53 739 744 172.8
D 5 222 610565 3347.97 747 725 182.2
D 13 168 42468 229.17 747 725 182.2
D 1 52 40702 219.47 747 725 182.2

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