ASTROSAT CZTI

Data Quality Report

Orbit 31609

Creation date: 2024-06-27T20:30:38.777314
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/AS1A10_094T74_9000004612_31609cztM0_level2.evt modeM0/AS1A10_094T74_9000004612_31609cztM0_level2_quad_clean.evt
Size (bytes)908,403,840160,525,440
Size866.3 MB 153.1 MB
Events in quadrant A7,529,8801,026,916
Events in quadrant B6,888,6241,100,428
Events in quadrant C5,173,5851,069,069
Events in quadrant D7,310,5031,038,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284681
B0275271
C0213341
D0279091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9014119813.290437%
B90141631.808298%
C90144795.313956%
D90145005.546927%

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 9594 9014 890 890 9.28% 9.87%
B 9594 9015 38 38 0.40% 0.42%
C 9594 9015 286 286 2.98% 3.17%
D 9594 9015 501 501 5.22% 5.56%

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 0 13 3745231 18972.65 975 952 197.4
A 15 174 17749 85.11 975 952 197.4
A 13 254 16068 76.59 975 952 197.4
B 6 159 2506296 12901.79 1020 991 194.2
B 5 172 127852 653.31 1020 991 194.2
B 4 80 99976 509.75 1020 991 194.2
C 3 233 1145469 5028.95 972 978 227.6
C 14 238 163939 716.06 972 978 227.6
C 2 114 20547 85.98 972 978 227.6
D 8 195 1928726 8181.68 985 957 235.6
D 12 218 685579 2905.62 985 957 235.6
D 12 233 290633 1229.42 985 957 235.6

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