ASTROSAT CZTI

Data Quality Report

Orbit 47837

Creation date: 2024-08-02T10:50:50.200125
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_216T01_9000006356_47837cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47837cztM0_level2_quad_clean.evt
Size (bytes)479,689,920114,520,320
Size457.5 MB 109.2 MB
Events in quadrant A7,118,932751,391
Events in quadrant B3,704,647792,952
Events in quadrant C3,073,999767,504
Events in quadrant D3,352,987701,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259043
B0153092
C0136732
D0144742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65252864.383142%
B65251051.609195%
C6525460.704981%
D6525791.210728%

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 7745 6525 119 119 1.54% 1.82%
B 7745 6525 5 5 0.06% 0.08%
C 7745 6525 11 11 0.14% 0.17%
D 7745 6526 64 64 0.83% 0.98%

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 3897752 24938.97 760 745 156.3
A 0 31 210728 1343.79 760 745 156.3
A 13 248 85153 540.17 760 745 156.3
B 4 21 504228 3364.28 769 746 149.7
B 0 186 58619 386.71 769 746 149.7
B 10 7 46218 303.84 769 746 149.7
C 12 2 69137 388.11 753 758 176.2
C 6 247 47019 262.57 753 758 176.2
C 14 254 26420 145.66 753 758 176.2
D 7 67 160909 859.06 747 725 186.5
D 12 33 117307 625.23 747 725 186.5
D 11 192 35405 185.99 747 725 186.5

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