ASTROSAT CZTI

Data Quality Report

Orbit 52589

Creation date: 2025-06-18T19:44:29.596841
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/AS1C09_011T06_9000006478_52589cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52589cztM0_level2_quad_clean.evt
Size (bytes)755,280,000102,072,960
Size720.3 MB 97.3 MB
Events in quadrant A4,548,703705,529
Events in quadrant B11,950,162539,374
Events in quadrant C4,793,582679,155
Events in quadrant D6,059,542622,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193220
B0408730
C0196556
D0236080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78262202.811142%
B7826289837.030411%
C78251561.993610%
D78263874.945055%

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 7826 7826 225 225 2.88% 2.88%
B 7826 7826 2646 2646 33.81% 33.81%
C 7824 7824 138 138 1.76% 1.76%
D 7826 7826 365 365 4.66% 4.66%

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 3 130 356933 1804.96 793 773 197.3
A 12 80 284145 1436.08 793 773 197.3
A 4 249 207567 1048.0 793 773 197.3
B 10 254 8190089 52188.31 741 714 156.9
B 1 255 141664 898.23 741 714 156.9
B 4 81 137377 870.91 741 714 156.9
C 15 224 1021249 4814.52 768 762 212.0
C 15 248 256629 1207.14 768 762 212.0
C 12 249 82044 383.48 768 762 212.0
D 15 125 770267 3581.97 756 721 214.8
D 8 176 640276 2976.91 756 721 214.8
D 6 42 348621 1619.35 756 721 214.8

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