ASTROSAT CZTI

Data Quality Report

Orbit 25050

Creation date: 2024-06-27T19:13:13.630729
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/AS1T03_206T01_9000003672_25050cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25050cztM0_level2_quad_clean.evt
Size (bytes)521,291,52080,749,440
Size497.1 MB 77.0 MB
Events in quadrant A3,024,447522,038
Events in quadrant B3,122,138528,149
Events in quadrant C3,176,217495,667
Events in quadrant D6,041,987464,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129051
B0132431
C0134771
D0223261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224490.787275%
B6224620.996144%
C62241582.538560%
D62245518.852828%

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 7079 6225 0 0 0.00% 0.00%
B 7079 6225 10 10 0.14% 0.16%
C 7079 6225 56 56 0.79% 0.90%
D 7079 6224 454 454 6.41% 7.29%

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 17 110182 711.83 752 736 153.8
A 13 254 11063 67.17 752 736 153.8
A 15 174 8511 50.57 752 736 153.8
B 5 172 89599 614.33 748 729 144.7
B 0 190 38686 262.38 748 729 144.7
B 3 64 28153 189.57 748 729 144.7
C 0 239 179879 1058.01 717 721 169.3
C 14 238 114003 668.98 717 721 169.3
C 0 207 35669 206.38 717 721 169.3
D 12 233 1491136 8464.3 714 691 176.1
D 7 238 865079 4908.9 714 691 176.1
D 8 195 684287 3882.17 714 691 176.1

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