ASTROSAT CZTI

Data Quality Report

Orbit 47300

Creation date: 2024-06-27T23:33:54.456282
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_025T01_9000006312_47300cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47300cztM0_level2_quad_clean.evt
Size (bytes)487,514,880109,437,120
Size464.9 MB 104.4 MB
Events in quadrant A7,284,117685,012
Events in quadrant B3,297,935777,516
Events in quadrant C3,039,451737,654
Events in quadrant D3,930,169668,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258602
B0141132
C0134482
D0160922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63746189.695639%
B6374881.380609%
C6374250.392218%
D63741752.745529%

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 7609 6375 313 313 4.11% 4.91%
B 7609 6375 20 20 0.26% 0.31%
C 7609 6375 3 3 0.04% 0.05%
D 7609 6375 124 124 1.63% 1.95%

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 3780039 25068.96 728 714 150.8
A 9 191 533214 3532.17 728 714 150.8
A 15 235 84861 558.16 728 714 150.8
B 5 171 49131 330.25 757 737 146.5
B 0 190 45954 308.57 757 737 146.5
B 7 221 45619 306.28 757 737 146.5
C 3 233 57965 322.77 746 750 177.3
C 14 254 36089 199.36 746 750 177.3
C 3 110 11789 62.27 746 750 177.3
D 12 2 406975 2193.85 737 717 185.2
D 7 96 339518 1829.57 737 717 185.2
D 14 34 105889 567.94 737 717 185.2

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