ASTROSAT CZTI

Data Quality Report

Orbit 55305

Creation date: 2025-12-19T20:46:36.240482
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_55305cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55305cztM0_level2_quad_clean.evt
Size (bytes)512,507,520127,126,080
Size488.8 MB 121.2 MB
Events in quadrant A4,707,531821,740
Events in quadrant B4,177,769877,685
Events in quadrant C4,115,805795,381
Events in quadrant D5,282,402739,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204672
B0190822
C0190432
D0223812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88481311.480561%
B88491251.412589%
C8849500.565036%
D88492733.085094%

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 9258 8850 103 103 1.11% 1.16%
B 9259 8850 23 23 0.25% 0.26%
C 9259 8851 30 30 0.32% 0.34%
D 9259 8851 240 240 2.59% 2.71%

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 18 501267 2176.73 940 915 229.9
A 0 8 286604 1242.86 940 915 229.9
A 12 194 72312 310.6 940 915 229.9
B 0 199 119086 590.67 934 897 200.1
B 0 197 110690 548.71 934 897 200.1
B 7 252 110206 546.29 934 897 200.1
C 13 3 195829 763.65 929 916 255.2
C 9 38 64301 248.34 929 916 255.2
C 14 254 43289 166.01 929 916 255.2
D 6 239 523162 2039.35 910 870 256.1
D 11 129 335546 1306.78 910 870 256.1
D 3 12 314190 1223.4 910 870 256.1

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