ASTROSAT CZTI

Data Quality Report

Orbit 16784

Creation date: 2024-06-27T17:27:54.435426
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/AS1A05_004T07_9000002492_16784cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16784cztM0_level2_quad_clean.evt
Size (bytes)872,343,360122,901,120
Size831.9 MB 117.2 MB
Events in quadrant A6,613,697742,623
Events in quadrant B5,253,133781,151
Events in quadrant C5,655,308748,472
Events in quadrant D8,184,309719,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267393
B0223432
C0236692
D0316722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105425395.112882%
B10542820.777841%
C105421461.384936%
D105423102.940618%

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 11968 10545 265 265 2.21% 2.51%
B 11968 10545 9 9 0.08% 0.09%
C 11968 10545 17 17 0.14% 0.16%
D 11968 10545 179 179 1.50% 1.70%

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 15 174 1852594 7412.05 1235 1207 249.8
A 9 143 18520 69.31 1235 1207 249.8
A 0 226 10762 38.25 1235 1207 249.8
B 0 229 154045 635.76 1257 1224 240.4
B 15 35 77483 317.25 1257 1224 240.4
B 0 189 30255 120.77 1257 1224 240.4
C 3 233 461127 1616.96 1209 1217 284.4
C 0 207 286356 1002.5 1209 1217 284.4
C 14 238 183640 641.37 1209 1217 284.4
D 1 52 1991990 6702.29 1212 1174 297.0
D 12 110 1149911 3867.34 1212 1174 297.0
D 12 218 259377 869.27 1212 1174 297.0

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