ASTROSAT CZTI

Data Quality Report

Orbit 55228

Creation date: 2025-12-13T05:31:26.938800
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_009T01_9000006534_55228cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55228cztM0_level2_quad_clean.evt
Size (bytes)559,509,12091,391,040
Size533.6 MB 87.2 MB
Events in quadrant A4,892,873610,040
Events in quadrant B3,055,272672,257
Events in quadrant C6,725,941496,944
Events in quadrant D5,537,110537,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189933
B0137812
C0246252
D0209592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64462373.676699%
B6446671.039404%
C6446131520.400248%
D64464637.182749%

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 7561 6447 211 211 2.79% 3.27%
B 7561 6447 22 22 0.29% 0.34%
C 7561 6446 1153 1153 15.25% 17.89%
D 7561 6446 481 481 6.36% 7.46%

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 5 113 1176158 7039.76 668 651 167.0
A 0 8 437613 2616.83 668 651 167.0
A 12 115 166009 990.28 668 651 167.0
B 2 249 114143 786.66 677 654 144.3
B 10 247 64346 441.49 677 654 144.3
B 10 245 54979 376.56 677 654 144.3
C 9 38 2116806 12418.47 616 611 170.4
C 12 252 693360 4065.26 616 611 170.4
C 13 3 692414 4059.71 616 611 170.4
D 11 129 1647129 8927.91 649 618 184.4
D 2 249 709520 3843.89 649 618 184.4
D 5 38 311165 1683.88 649 618 184.4

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