ASTROSAT CZTI

Data Quality Report

Orbit 48581

Creation date: 2024-09-21T14:49:23.255281
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_037T01_9000006436_48581cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48581cztM0_level2_quad_clean.evt
Size (bytes)600,560,640113,094,720
Size572.7 MB 107.9 MB
Events in quadrant A7,276,518742,230
Events in quadrant B3,470,038789,667
Events in quadrant C3,160,996765,484
Events in quadrant D7,742,142605,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271590
B0159690
C0154250
D0286000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74953074.096064%
B74961902.534685%
C7496200.266809%
D7496111114.821238%

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 7495 7495 0 0 0.00% 0.00%
B 7496 7496 4 4 0.05% 0.05%
C 7496 7496 0 0 0.00% 0.00%
D 7496 7496 1014 1014 13.53% 13.53%

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 4026313 23569.35 811 792 170.8
A 0 31 104128 605.03 811 792 170.8
A 13 254 13007 71.52 811 792 170.8
B 12 16 187573 1154.87 815 785 161.7
B 5 255 27018 162.19 815 785 161.7
B 12 111 21755 129.65 815 785 161.7
C 14 254 13635 67.32 805 810 190.5
C 14 67 5978 27.13 805 810 190.5
C 13 61 5348 23.82 805 810 190.5
D 2 165 4686992 24124.93 767 742 194.2
D 13 171 69491 353.92 767 742 194.2
D 2 234 36314 183.13 767 742 194.2

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