ASTROSAT CZTI

Data Quality Report

Orbit 20240628_A13_037T01_9000006318_level2

Creation date: 2024-07-02T11:29:16.369938
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_9000006318cztM0_level2.fits modeM0/AS1A13_037T01_9000006318cztM0_level2_quad_clean.evt
Size (bytes)525,689,280534,905,280
Size501.3 MB 510.1 MB
Events in quadrant A2,967,6062,952,789
Events in quadrant B3,099,3783,374,891
Events in quadrant C3,111,1583,046,279
Events in quadrant D2,578,8362,669,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02918970
B01273530
C01494470
D02001100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012280
B012280
C012280
D012280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A605771006016.606963%
B605777021.158856%
C6057724494.042789%
D6057754258.955544%

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 68612 60577 0 0 0.00% 0.00%
B 68612 60577 0 0 0.00% 0.00%
C 68612 60440 0 0 0.00% 0.00%
D 68611 60218 0 0 0.00% 0.00%

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 7 110 2425 8.4 773 719 203.0
A 0 29 2297 7.77 773 719 203.0
A 14 95 2251 7.55 773 719 203.0
B 2 9 2912 13.11 817 777 162.9
B 2 8 2391 9.91 817 777 162.9
B 3 17 2172 8.56 817 777 162.9
C 3 202 2314 7.11 823 763 218.0
C 1 81 2300 7.05 823 763 218.0
C 3 203 2294 7.02 823 763 218.0
D 15 63 1912 5.98 740 672 207.4
D 10 189 1879 5.82 740 672 207.4
D 15 47 1866 5.76 740 672 207.4

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