ASTROSAT CZTI

Data Quality Report

Orbit 26830

Creation date: 2024-06-27T19:33:26.825218
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/AS1A09_145T01_9000003866_26830cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26830cztM0_level2_quad_clean.evt
Size (bytes)1,610,089,920250,462,080
Size1.5 GB 238.9 MB
Events in quadrant A11,410,2871,623,985
Events in quadrant B9,418,0621,642,424
Events in quadrant C8,847,6371,582,840
Events in quadrant D17,875,6491,498,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458610
B0385550
C0368830
D0653490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179592891.609221%
B179592681.492288%
C179602511.397550%
D17960239913.357461%

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 19834 17961 64 64 0.32% 0.36%
B 19834 17960 66 66 0.33% 0.37%
C 19835 17960 0 0 0.00% 0.00%
D 19835 17961 1715 1715 8.65% 9.55%

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 0 13 2715879 5983.64 2252 2212 453.5
A 13 254 28975 59.01 2252 2212 453.5
A 3 137 20661 40.68 2252 2212 453.5
B 7 205 256491 599.04 2238 2189 424.5
B 10 246 256201 598.36 2238 2189 424.5
B 15 33 53118 119.97 2238 2189 424.5
C 14 238 346287 675.16 2164 2185 509.7
C 15 208 34422 63.25 2164 2185 509.7
C 3 233 26945 48.58 2164 2185 509.7
D 1 52 6712213 13370.26 2092 2043 501.9
D 7 80 2144908 4269.74 2092 2043 501.9
D 2 250 659557 1310.12 2092 2043 501.9

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