ASTROSAT CZTI

Data Quality Report

Orbit 46933

Creation date: 2024-06-27T23:29:37.042882
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/AS1A13_077T01_9000006286_46933cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46933cztM0_level2_quad_clean.evt
Size (bytes)885,407,040166,446,720
Size844.4 MB 158.7 MB
Events in quadrant A10,536,1051,103,298
Events in quadrant B7,923,7901,100,417
Events in quadrant C4,899,0041,111,637
Events in quadrant D8,579,921975,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391142
B0306462
C0224962
D0328642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108193533.262778%
B108207847.245841%
C108201151.062847%
D108207797.199630%

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 12154 10819 14 14 0.12% 0.13%
B 12155 10820 514 514 4.23% 4.75%
C 12155 10820 18 18 0.15% 0.17%
D 12155 10820 625 625 5.14% 5.78%

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 10 83 5651730 22368.46 1207 1180 252.6
A 9 191 190452 749.26 1207 1180 252.6
A 13 6 16600 61.04 1207 1180 252.6
B 0 200 1677619 7127.11 1184 1147 235.2
B 3 112 923438 3920.89 1184 1147 235.2
B 5 29 204372 863.96 1184 1147 235.2
C 14 254 192481 676.72 1194 1200 282.7
C 0 207 38679 132.59 1194 1200 282.7
C 13 61 8116 24.47 1194 1200 282.7
D 1 52 1630798 5507.59 1167 1131 295.9
D 12 0 1311645 4428.99 1167 1131 295.9
D 13 249 406748 1370.82 1167 1131 295.9

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