ASTROSAT CZTI

Data Quality Report

Orbit 27507

Creation date: 2024-06-27T19:40:47.059606
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/AS1T03_249T01_9000003934_27507cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27507cztM0_level2_quad_clean.evt
Size (bytes)584,337,60094,582,080
Size557.3 MB 90.2 MB
Events in quadrant A3,831,447593,961
Events in quadrant B3,892,014600,479
Events in quadrant C3,846,042572,121
Events in quadrant D5,597,753554,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163150
B0163620
C0163550
D0216980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78052132.729020%
B78052633.369635%
C78052833.625881%
D78055116.547085%

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 7905 7805 0 0 0.00% 0.00%
B 7905 7805 0 0 0.00% 0.00%
C 7905 7805 0 0 0.00% 0.00%
D 7905 7805 293 293 3.71% 3.75%

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 13 254 13462 62.3 991 968 200.6
A 3 137 9836 44.22 991 968 200.6
A 0 226 8346 36.79 991 968 200.6
B 0 230 32820 166.25 978 950 191.7
B 12 111 23966 120.07 978 950 191.7
B 11 111 21520 107.31 978 950 191.7
C 14 238 149024 661.35 944 950 223.9
C 2 16 14910 62.35 944 950 223.9
C 13 61 6311 23.94 944 950 223.9
D 1 52 1421634 6253.72 943 918 227.2
D 2 250 371777 1632.45 943 918 227.2
D 14 35 154027 673.96 943 918 227.2

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