ASTROSAT CZTI

Data Quality Report

Orbit 53519

Creation date: 2025-08-20T05:05:05.749581
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_004T04_9000006500_53519cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53519cztM0_level2_quad_clean.evt
Size (bytes)872,801,280103,501,440
Size832.4 MB 98.7 MB
Events in quadrant A7,819,541739,134
Events in quadrant B4,553,897813,562
Events in quadrant C13,958,692349,168
Events in quadrant D5,369,885686,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286600
B0190250
C0466738
D0214700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78396858.738359%
B7839961.224646%
C7839406351.830591%
D78392843.622911%

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 7839 7839 625 625 7.97% 7.97%
B 7839 7839 62 62 0.79% 0.79%
C 7838 7838 3886 3886 49.58% 49.58%
D 7839 7839 251 251 3.20% 3.20%

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 62 2943803 14107.14 826 805 208.6
A 3 63 890522 4264.82 826 805 208.6
A 15 174 591428 2831.13 826 805 208.6
B 2 249 287684 1628.34 833 803 176.2
B 4 81 186361 1053.23 833 803 176.2
B 5 172 162196 916.07 833 803 176.2
C 1 241 8254898 57036.67 510 504 144.7
C 15 224 1797756 12418.75 510 504 144.7
C 7 64 699687 4831.25 510 504 144.7
D 2 153 606183 2571.14 818 780 235.5
D 2 249 348689 1477.56 818 780 235.5
D 13 153 193626 819.01 818 780 235.5

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