ASTROSAT CZTI

Data Quality Report

Orbit 52680

Creation date: 2025-06-25T10:40:02.449341
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_011T07_9000006480_52680cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52680cztM0_level2_quad_clean.evt
Size (bytes)2,555,850,240186,071,040
Size2.4 GB 177.5 MB
Events in quadrant A11,662,5021,511,057
Events in quadrant B22,001,4351,428,035
Events in quadrant C20,774,6471,202,633
Events in quadrant D38,853,053307,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465513
B0774913
C0736368
D01270553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171535983.486271%
B17153328419.145339%
C17152323518.860774%
D171521371979.984841%

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 18448 17157 316 316 1.71% 1.84%
B 18448 17157 2477 2477 13.43% 14.44%
C 18447 17156 3083 3083 16.71% 17.97%
D 18447 17156 12250 12250 66.41% 71.40%

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 14 2689234 6108.4 1767 1722 440.0
A 3 114 392949 889.21 1767 1722 440.0
A 15 174 263255 594.43 1767 1722 440.0
B 10 128 9158704 25922.31 1663 1604 353.3
B 12 32 1988704 5625.17 1663 1604 353.3
B 10 254 693213 1957.84 1663 1604 353.3
C 15 248 8851180 20058.03 1600 1585 441.2
C 15 234 1656070 3749.97 1600 1585 441.2
C 12 252 550817 1244.86 1600 1585 441.2
D 8 176 33368190 155140.26 736 701 215.1
D 2 153 803051 3730.48 736 701 215.1
D 1 7 509579 2366.0 736 701 215.1

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