ASTROSAT CZTI

Data Quality Report

Orbit 56606

Creation date: 2026-03-15T22:12:00.455552
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_083T06_9000006558_56606cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56606cztM0_level2_quad_clean.evt
Size (bytes)418,049,28095,950,080
Size398.7 MB 91.5 MB
Events in quadrant A3,087,844633,022
Events in quadrant B3,304,106680,930
Events in quadrant C3,038,292603,692
Events in quadrant D5,530,542526,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141731
B0146162
C0140701
D0209281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609650.983507%
B6608731.104722%
C6608260.393462%
D66096009.078529%

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 7634 6610 32 32 0.42% 0.48%
B 7633 6609 24 24 0.31% 0.36%
C 7633 6609 18 18 0.24% 0.27%
D 7634 6610 661 661 8.66% 10.00%

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 13 248 145439 817.98 711 693 177.0
A 4 95 133190 748.76 711 693 177.0
A 7 64 16099 87.06 711 693 177.0
B 10 246 116609 762.11 704 679 152.1
B 0 63 94945 619.69 704 679 152.1
B 5 236 79837 520.37 704 679 152.1
C 13 3 114630 606.06 681 674 188.0
C 12 252 73979 389.86 681 674 188.0
C 14 254 73030 384.81 681 674 188.0
D 2 249 1083212 5808.52 657 627 186.4
D 13 153 451790 2420.68 657 627 186.4
D 6 239 384315 2058.64 657 627 186.4

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