ASTROSAT CZTI

Data Quality Report

Orbit 50633

Creation date: 2025-02-06T21:13:03.970149
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/AS1T05_239T01_9000006444_50633cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50633cztM0_level2_quad_clean.evt
Size (bytes)761,264,64077,526,720
Size726.0 MB 73.9 MB
Events in quadrant A4,233,060604,797
Events in quadrant B14,047,929169,088
Events in quadrant C5,303,431559,931
Events in quadrant D4,079,279549,896

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169971
B0462301
C0204271
D0167731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66432143.221436%
B6643525279.060665%
C66435287.948216%
D66431452.182749%

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 7413 6644 147 147 1.98% 2.21%
B 7413 6644 4716 4716 63.62% 70.98%
C 7413 6644 444 444 5.99% 6.68%
D 7413 6644 129 129 1.74% 1.94%

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 12 250 370886 2187.82 691 674 169.2
A 4 3 184440 1085.99 691 674 169.2
A 8 247 179734 1058.18 691 674 169.2
B 4 170 10823946 100917.32 496 480 107.3
B 5 172 710192 6617.31 496 480 107.3
B 5 185 144029 1338.44 496 480 107.3
C 15 174 1315966 7220.43 661 656 182.2
C 15 127 407784 2234.94 661 656 182.2
C 0 176 206490 1129.93 661 656 182.2
D 8 246 289383 1530.94 673 648 188.6
D 2 249 154804 817.37 673 648 188.6
D 7 96 135945 717.37 673 648 188.6

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