ASTROSAT CZTI

Data Quality Report

Orbit 54084

Creation date: 2025-09-27T06:00:55.003305
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_54084cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54084cztM0_level2_quad_clean.evt
Size (bytes)500,143,680106,963,200
Size477.0 MB 102.0 MB
Events in quadrant A3,650,518706,512
Events in quadrant B4,110,561756,430
Events in quadrant C4,052,968665,655
Events in quadrant D6,117,243589,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166382
B0177852
C0176792
D0233352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74921451.935398%
B74923054.071009%
C74922202.936466%
D74926268.355579%

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 7717 7495 74 74 0.96% 0.99%
B 7717 7495 120 120 1.56% 1.60%
C 7717 7495 130 130 1.68% 1.73%
D 7717 7495 479 479 6.21% 6.39%

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 15 174 404596 2036.5 798 775 198.3
A 12 15 39455 195.07 798 775 198.3
A 1 7 21807 106.07 798 775 198.3
B 5 236 217172 1285.4 793 762 168.4
B 7 252 198425 1174.05 793 762 168.4
B 5 185 193204 1143.04 793 762 168.4
C 13 3 349181 1643.86 778 769 211.9
C 15 233 176604 829.61 778 769 211.9
C 12 249 104425 489.06 778 769 211.9
D 8 176 1553241 7332.84 748 715 211.7
D 2 172 695550 3281.82 748 715 211.7
D 10 199 323356 1523.89 748 715 211.7

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