ASTROSAT CZTI

Data Quality Report

Orbit 47270

Creation date: 2024-06-27T23:33:33.597850
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_025T01_9000006312_47270cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47270cztM0_level2_quad_clean.evt
Size (bytes)575,982,72099,236,160
Size549.3 MB 94.6 MB
Events in quadrant A7,385,926652,814
Events in quadrant B3,307,374710,017
Events in quadrant C2,922,220677,280
Events in quadrant D7,231,758537,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02635854
B01391317
C01296411
D02581818

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61145579.110239%
B61211362.221859%
C6123610.996244%
D612297915.991506%

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 7272 6128 244 244 3.36% 3.98%
B 7273 6129 34 34 0.47% 0.55%
C 7273 6128 12 12 0.16% 0.20%
D 7273 6129 837 837 11.51% 13.66%

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 3444075 23995.98 688 675 143.5
A 9 191 1233188 8589.0 688 675 143.5
A 0 243 18903 127.03 688 675 143.5
B 0 200 271796 1942.93 709 687 139.5
B 14 167 57648 408.22 709 687 139.5
B 0 183 44783 316.02 709 687 139.5
C 14 254 119211 717.9 699 704 165.1
C 12 2 15241 88.06 699 704 165.1
C 3 233 14077 81.01 699 704 165.1
D 6 112 4012223 23869.25 660 638 168.1
D 12 233 179696 1065.41 660 638 168.1
D 1 47 86373 510.13 660 638 168.1

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