ASTROSAT CZTI

Data Quality Report

Orbit 53864

Creation date: 2025-09-13T15:53:46.482008
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/AS1A14_057T04_9000006508_53864cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53864cztM0_level2_quad_clean.evt
Size (bytes)533,462,40096,793,920
Size508.7 MB 92.3 MB
Events in quadrant A3,153,602657,370
Events in quadrant B3,864,189688,650
Events in quadrant C6,679,329554,971
Events in quadrant D5,528,630561,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141972
B0160522
C0244952
D0211052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6715921.370067%
B67152503.723008%
C6716100314.934485%
D67165458.114949%

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 6716 2 2 0.03% 0.03%
B 7745 6716 99 99 1.28% 1.47%
C 7746 6717 813 813 10.50% 12.10%
D 7746 6717 495 495 6.39% 7.37%

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 8 249 79838 429.09 751 732 184.4
A 4 249 35647 189.39 751 732 184.4
A 0 8 24932 131.27 751 732 184.4
B 0 213 298577 1897.07 737 713 157.0
B 10 247 187988 1192.74 737 713 157.0
B 5 185 174557 1107.2 737 713 157.0
C 15 224 1915960 10068.36 686 681 190.2
C 15 209 1062804 5583.43 686 681 190.2
C 1 241 629468 3305.45 686 681 190.2
D 8 176 2344114 11820.74 696 667 198.2
D 2 249 127786 641.21 696 667 198.2
D 7 70 51336 255.58 696 667 198.2

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