ASTROSAT CZTI

Data Quality Report

Orbit 50555

Creation date: 2025-02-01T15:06:45.907574
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/AS1T05_239T01_9000006444_50555cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50555cztM0_level2_quad_clean.evt
Size (bytes)718,940,16097,139,520
Size685.6 MB 92.6 MB
Events in quadrant A4,990,430671,272
Events in quadrant B4,979,373722,668
Events in quadrant C10,527,060424,857
Events in quadrant D5,544,374608,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196900
B0199510
C0364410
D0217110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73752503.389831%
B73753695.003390%
C7376295740.089479%
D73762373.213124%

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 7375 7375 157 157 2.13% 2.13%
B 7375 7375 308 308 4.18% 4.18%
C 7376 7376 2179 2179 29.54% 29.54%
D 7376 7376 243 243 3.29% 3.29%

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 12 250 533323 2813.9 773 756 189.3
A 4 191 198621 1045.45 773 756 189.3
A 4 3 197066 1037.23 773 756 189.3
B 7 0 1113831 6750.18 768 740 164.9
B 5 185 174401 1053.14 768 740 164.9
B 12 0 126254 761.16 768 740 164.9
C 15 214 4037321 24109.25 590 586 167.4
C 15 178 1072965 6404.74 590 586 167.4
C 0 208 507103 3025.15 590 586 167.4
D 7 61 664545 3207.1 745 721 207.0
D 7 60 439439 2119.56 745 721 207.0
D 11 161 333304 1606.79 745 721 207.0

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