ASTROSAT CZTI

Data Quality Report

Orbit 46953

Creation date: 2024-06-27T23:29:51.229489
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_077T01_9000006286_46953cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46953cztM0_level2_quad_clean.evt
Size (bytes)640,670,400101,324,160
Size611.0 MB 96.6 MB
Events in quadrant A6,664,819716,005
Events in quadrant B9,529,299559,974
Events in quadrant C2,981,951711,596
Events in quadrant D4,049,348637,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242881
B0326656
C0132771
D0161741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63322884.548326%
B6331206032.538304%
C6332881.389766%
D63323044.801011%

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 7467 6333 21 21 0.28% 0.33%
B 7466 6332 1846 1846 24.73% 29.15%
C 7467 6333 10 10 0.13% 0.16%
D 7467 6332 188 188 2.52% 2.97%

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 3681680 23870.6 741 725 154.2
A 15 235 33663 213.6 741 725 154.2
A 0 243 28243 178.45 741 725 154.2
B 3 112 6490032 47907.81 683 661 135.5
B 15 36 90675 664.53 683 661 135.5
B 4 171 63227 461.89 683 661 135.5
C 14 254 48734 277.3 732 736 173.1
C 1 3 36892 208.89 732 736 173.1
C 11 16 12287 66.73 732 736 173.1
D 13 249 426731 2320.09 729 708 183.6
D 1 52 400858 2179.19 729 708 183.6
D 1 47 136020 736.9 729 708 183.6

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