ASTROSAT CZTI

Data Quality Report

Orbit 20191119_T03_156T01_9000003312_level2

Creation date: 2025-12-05T22:45:30.134420
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/AS1T03_156T01_9000003312cztM0_level2.fits modeM0/AS1T03_156T01_9000003312cztM0_level2_quad_clean.evt
Size (bytes)444,827,520288,339,840
Size424.2 MB 275.0 MB
Events in quadrant A2,754,1581,486,026
Events in quadrant B2,652,4741,493,035
Events in quadrant C2,685,1621,413,755
Events in quadrant D2,334,2481,290,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09100
B09100
C09100
D09100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0916350
B0932640
C0922860
D01001690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A443613690.831812%
B443615441.226302%
C443616251.408895%
D443614841.091048%

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 52666 44358 0 0 0.00% 0.00%
B 52666 44357 0 0 0.00% 0.00%
C 52666 44360 0 0 0.00% 0.00%
D 52666 44360 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 0 29 2634 11.1 716 674 176.6
A 7 110 2159 8.41 716 674 176.6
A 9 19 2063 7.86 716 674 176.6
B 2 9 2050 10.02 701 671 137.6
B 5 128 1738 7.76 701 671 137.6
B 2 8 1727 7.68 701 671 137.6
C 3 234 1887 6.71 709 666 181.9
C 12 241 1851 6.52 709 666 181.9
C 3 126 1814 6.31 709 666 181.9
D 3 14 1686 6.08 665 605 177.7
D 10 189 1642 5.84 665 605 177.7
D 6 67 1632 5.78 665 605 177.7

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