ASTROSAT CZTI

Data Quality Report

Orbit 54098

Creation date: 2025-09-28T04:34:26.886631
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_041T01_9000006510_54098cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54098cztM0_level2_quad_clean.evt
Size (bytes)713,070,72093,214,080
Size680.0 MB 88.9 MB
Events in quadrant A3,863,549665,706
Events in quadrant B9,567,344557,142
Events in quadrant C5,788,177557,293
Events in quadrant D6,627,669548,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168003
B0333752
C0223832
D0247222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70871952.751517%
B7088190526.876411%
C708899013.967269%
D708882611.653499%

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 7647 7088 164 164 2.14% 2.31%
B 7648 7089 1500 1500 19.61% 21.16%
C 7648 7089 821 821 10.73% 11.58%
D 7648 7089 703 703 9.19% 9.92%

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 12 115 521684 2838.44 737 718 183.5
A 15 174 207260 1125.33 737 718 183.5
A 0 8 47251 253.53 737 718 183.5
B 5 250 5930818 41186.86 675 650 144.0
B 15 20 404880 2807.5 675 650 144.0
B 0 213 218960 1516.23 675 650 144.0
C 1 241 2155192 11821.07 666 660 182.3
C 13 3 569721 3122.21 666 660 182.3
C 1 16 185880 1016.23 666 660 182.3
D 15 78 2798497 14301.07 689 658 195.6
D 3 12 314681 1605.12 689 658 195.6
D 2 172 299763 1528.87 689 658 195.6

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