ASTROSAT CZTI

Data Quality Report

Orbit 33666

Creation date: 2024-06-27T20:51:15.851975
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/AS1T04_076T01_9000004810_33666cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33666cztM0_level2_quad_clean.evt
Size (bytes)678,470,40047,721,600
Size647.0 MB 45.5 MB
Events in quadrant A9,598,820183,199
Events in quadrant B3,432,054296,542
Events in quadrant C3,242,756298,965
Events in quadrant D3,906,560284,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321683
B0135812
C0128192
D0154382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5433308556.782625%
B54332664.896006%
C5433801.472483%
D54331102.024664%

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 7166 5433 2890 2890 40.33% 53.19%
B 7166 5434 212 212 2.96% 3.90%
C 7166 5434 60 60 0.84% 1.10%
D 7166 5434 79 79 1.10% 1.45%

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 15 169 7431339 71517.07 512 501 103.9
A 15 237 169168 1623.31 512 501 103.9
A 13 6 9254 84.24 512 501 103.9
B 5 172 674258 5343.98 659 644 126.1
B 5 255 35745 278.47 659 644 126.1
B 5 200 29168 226.29 659 644 126.1
C 15 214 252521 1643.48 658 665 153.2
C 0 10 234996 1529.13 658 665 153.2
C 3 233 152235 989.07 658 665 153.2
D 8 195 610230 3411.86 652 639 178.7
D 2 250 177257 988.52 652 639 178.7
D 10 118 129749 722.62 652 639 178.7

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