ASTROSAT CZTI

Data Quality Report

Orbit 50945

Creation date: 2025-03-19T16:34:33.871199
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/AS1C07_001T01_9000006450_50945cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50945cztM0_level2_quad_clean.evt
Size (bytes)675,244,80081,276,480
Size644.0 MB 77.5 MB
Events in quadrant A9,445,307409,339
Events in quadrant B5,067,551588,230
Events in quadrant C4,707,162543,026
Events in quadrant D5,297,719489,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323571
B0193451
C0181831
D0199501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169219435.564921%
B616866810.830091%
C61683155.107004%
D616862610.149157%

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 7139 6170 1891 1891 26.49% 30.65%
B 7138 6169 376 376 5.27% 6.09%
C 7138 6169 210 210 2.94% 3.40%
D 7138 6168 488 488 6.84% 7.91%

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 8 43 5415203 37728.07 571 555 143.5
A 9 13 559364 3893.66 571 555 143.5
A 12 3 452024 3145.74 571 555 143.5
B 4 206 1415698 10484.76 630 607 135.0
B 4 81 579422 4288.58 630 607 135.0
B 4 171 257656 1904.54 630 607 135.0
C 12 252 504633 2934.36 629 623 171.8
C 14 245 427454 2485.02 629 623 171.8
C 13 3 222628 1292.52 629 623 171.8
D 8 176 1312459 7656.58 613 590 171.3
D 10 181 330472 1925.32 613 590 171.3
D 3 12 320291 1865.9 613 590 171.3

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