ASTROSAT CZTI

Data Quality Report

Orbit 31638

Creation date: 2024-06-27T20:31:01.934163
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/AS1T04_035T01_9000004622_31638cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31638cztM0_level2_quad_clean.evt
Size (bytes)707,964,48079,260,480
Size675.2 MB 75.6 MB
Events in quadrant A2,818,804547,083
Events in quadrant B6,017,968486,466
Events in quadrant C6,717,110492,647
Events in quadrant D5,492,312464,137

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122811
B0219851
C0240791
D0203281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5856400.683060%
B585676413.046448%
C5857100417.141882%
D585766611.371009%

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 6926 5857 0 0 0.00% 0.00%
B 6926 5857 550 550 7.94% 9.39%
C 6927 5858 270 270 3.90% 4.61%
D 6927 5858 591 591 8.53% 10.09%

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 0 13 17222 113.83 723 710 145.1
A 13 254 11791 76.39 723 710 145.1
A 3 137 6832 42.2 723 710 145.1
B 6 159 1621392 12733.35 665 649 127.3
B 5 172 1197457 9402.71 665 649 127.3
B 10 245 377905 2963.91 665 649 127.3
C 3 233 3970737 25842.59 655 659 153.6
C 14 238 104918 678.65 655 659 153.6
C 0 10 51988 334.11 655 659 153.6
D 13 249 1385758 8921.84 653 635 155.3
D 8 195 1016698 6544.66 653 635 155.3
D 11 176 456896 2938.86 653 635 155.3

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