ASTROSAT CZTI

Data Quality Report

Orbit 31509

Creation date: 2024-06-27T20:29:27.434007
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/AS1T04_030T01_9000004588_31509cztM0_level2.evt modeM0/AS1T04_030T01_9000004588_31509cztM0_level2_quad_clean.evt
Size (bytes)2,094,148,800273,839,040
Size2.0 GB 261.2 MB
Events in quadrant A12,238,1751,788,281
Events in quadrant B15,659,5541,813,248
Events in quadrant C20,725,5321,586,825
Events in quadrant D13,454,5361,727,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494714
B0615344
C0746214
D0531794

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1997312916.463726%
B199747723.865025%
C19974473823.720837%
D199747083.544608%

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 20758 19973 678 678 3.27% 3.39%
B 20759 19974 100 100 0.48% 0.50%
C 20758 19973 3345 3345 16.11% 16.75%
D 20759 19974 324 324 1.56% 1.62%

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 2460417 5162.11 2376 2326 476.2
A 15 174 610656 1277.52 2376 2326 476.2
A 13 254 35796 70.29 2376 2326 476.2
B 6 159 5487094 12102.19 2374 2315 453.2
B 5 172 299539 655.83 2374 2315 453.2
B 0 190 113634 245.63 2374 2315 453.2
C 3 233 10306697 20831.72 2116 2126 494.7
C 10 22 1685958 3404.03 2116 2126 494.7
C 14 238 336923 676.83 2116 2126 494.7
D 8 195 2534740 4615.91 2320 2254 548.6
D 12 218 648355 1177.63 2320 2254 548.6
D 2 250 464937 843.32 2320 2254 548.6

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