ASTROSAT CZTI

Data Quality Report

Orbit 53455

Creation date: 2025-08-15T22:12:44.161537
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/AS1A14_002T06_9000006496_53455cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53455cztM0_level2_quad_clean.evt
Size (bytes)699,010,56094,147,200
Size666.6 MB 89.8 MB
Events in quadrant A5,200,303662,683
Events in quadrant B4,492,563744,501
Events in quadrant C10,712,634399,782
Events in quadrant D4,953,333579,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200062
B0177952
C0362842
D0191622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66615888.827503%
B66613345.014262%
C6661289443.446930%
D66615147.716559%

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 7781 6662 372 372 4.78% 5.58%
B 7781 6661 72 72 0.93% 1.08%
C 7781 6661 2558 2558 32.87% 38.40%
D 7781 6662 395 395 5.08% 5.93%

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 1475774 7909.57 764 748 186.5
A 3 63 512950 2746.59 764 748 186.5
A 12 115 133279 710.67 764 748 186.5
B 4 171 755261 4592.97 767 741 164.3
B 8 234 337298 2048.71 767 741 164.3
B 4 206 111592 674.78 767 741 164.3
C 1 241 6548887 41600.38 573 569 157.4
C 15 178 871838 5535.03 573 569 157.4
C 15 224 524020 3325.4 573 569 157.4
D 3 12 1238081 5920.35 738 706 209.0
D 8 176 243595 1162.13 738 706 209.0
D 13 153 113585 540.08 738 706 209.0

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