ASTROSAT CZTI

Data Quality Report

Orbit 51916

Creation date: 2025-05-04T06:10:20.503611
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_011T05_9000006466_51916cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51916cztM0_level2_quad_clean.evt
Size (bytes)742,916,16083,822,400
Size708.5 MB 79.9 MB
Events in quadrant A4,514,005599,201
Events in quadrant B5,695,407601,196
Events in quadrant C5,666,870561,000
Events in quadrant D11,123,727325,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180272
B0215242
C0213092
D0374722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64642784.300743%
B646491414.139851%
C64646389.870050%
D6464303046.875000%

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 7629 6466 167 167 2.19% 2.58%
B 7629 6466 592 592 7.76% 9.16%
C 7629 6465 515 515 6.75% 7.97%
D 7629 6466 2843 2843 37.27% 43.97%

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 7 64 565751 3395.33 664 649 166.4
A 12 3 415845 2494.64 664 649 166.4
A 15 174 130523 780.33 664 649 166.4
B 4 206 1237882 9092.15 643 622 136.1
B 4 171 760932 5587.23 643 622 136.1
B 12 32 530743 3895.66 643 622 136.1
C 10 22 790798 4469.33 638 633 176.8
C 15 158 337940 1907.88 638 633 176.8
C 15 248 331311 1870.38 638 633 176.8
D 12 17 4744744 31201.77 481 462 152.1
D 15 94 2033904 13373.36 481 462 152.1
D 2 172 1195858 7861.77 481 462 152.1

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