ASTROSAT CZTI

Data Quality Report

Orbit 04174

Creation date: 2024-06-27T14:38:23.960084
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/AS1G05_240T01_9000000536_04174cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04174cztM0_level2_quad_clean.evt
Size (bytes)527,555,52085,017,600
Size503.1 MB 81.1 MB
Events in quadrant A4,366,196516,900
Events in quadrant B3,666,099521,008
Events in quadrant C3,433,214513,614
Events in quadrant D3,997,860496,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180693
B0159662
C0155152
D0175342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75662022.669839%
B7566931.229183%
C7566400.528681%
D75661021.348136%

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 7881 7567 75 75 0.95% 0.99%
B 7881 7567 10 10 0.13% 0.13%
C 7881 7567 1 1 0.01% 0.01%
D 7881 7567 66 66 0.84% 0.87%

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 3 1 520828 2914.72 866 845 178.4
A 15 234 394643 2207.4 866 845 178.4
A 0 50 84067 466.49 866 845 178.4
B 10 16 58622 333.21 889 867 173.3
B 15 204 52514 297.97 889 867 173.3
B 7 252 43441 245.62 889 867 173.3
C 10 65 38456 186.48 858 861 201.6
C 8 128 21637 103.05 858 861 201.6
C 8 112 8462 37.7 858 861 201.6
D 2 232 357640 1708.62 852 826 208.8
D 13 239 242914 1159.25 852 826 208.8
D 10 172 49638 233.74 852 826 208.8

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