ASTROSAT CZTI

Data Quality Report

Orbit 11806

Creation date: 2024-06-27T16:18:33.131440
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_022T04_9000001746_11806cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11806cztM0_level2_quad_clean.evt
Size (bytes)499,901,76091,719,360
Size476.7 MB 87.5 MB
Events in quadrant A3,270,411586,234
Events in quadrant B4,541,463577,043
Events in quadrant C3,012,416598,796
Events in quadrant D3,869,682557,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141763
B0180402
C0135512
D0160772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554851.296918%
B65542924.455294%
C6554540.823924%
D65542533.860238%

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 8475 6557 2 2 0.02% 0.03%
B 8475 6557 133 133 1.57% 2.03%
C 8475 6557 2 2 0.02% 0.03%
D 8475 6557 148 148 1.75% 2.26%

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 1 162 105662 665.39 771 754 157.7
A 1 178 62942 394.43 771 754 157.7
A 1 161 53446 334.2 771 754 157.7
B 4 239 736796 5007.66 765 744 147.0
B 10 16 313383 2127.01 765 744 147.0
B 15 185 270344 1834.19 765 744 147.0
C 1 16 19156 103.3 761 765 178.0
C 8 208 17053 91.49 761 765 178.0
C 13 61 5624 27.29 761 765 178.0
D 1 52 609626 3391.6 744 723 179.5
D 13 104 82408 454.99 744 723 179.5
D 10 253 74993 413.69 744 723 179.5

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