ASTROSAT CZTI

Data Quality Report

Orbit 41240

Creation date: 2024-06-27T22:26:21.568874
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/AS1T05_102T01_9000005634_41240cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41240cztM0_level2_quad_clean.evt
Size (bytes)364,464,00096,609,600
Size347.6 MB 92.1 MB
Events in quadrant A3,368,846652,278
Events in quadrant B2,775,868671,142
Events in quadrant C3,502,900629,394
Events in quadrant D3,397,741572,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134683
B0122002
C0139742
D0140792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5729200.349101%
B5729260.453831%
C57291602.792809%
D57292444.259033%

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 9195 5731 11 11 0.12% 0.19%
B 9195 5731 7 7 0.08% 0.12%
C 9195 5731 158 158 1.72% 2.76%
D 9195 5731 140 140 1.52% 2.44%

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 551658 4203.48 642 628 131.1
A 0 8 180838 1374.72 642 628 131.1
A 12 189 59273 447.37 642 628 131.1
B 0 229 122631 988.17 637 619 123.5
B 0 186 82553 663.58 637 619 123.5
B 0 245 39116 311.79 637 619 123.5
C 0 10 414851 2842.76 623 629 145.7
C 9 54 366277 2509.41 623 629 145.7
C 15 214 244559 1674.07 623 629 145.7
D 5 222 347995 2295.1 620 604 151.4
D 13 249 302933 1997.39 620 604 151.4
D 5 171 103809 681.84 620 604 151.4

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