ASTROSAT CZTI

Data Quality Report

Orbit 22642

Creation date: 2024-06-27T18:43:58.691105
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/AS1A08_007T01_9000003362_22642cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22642cztM0_level2_quad_clean.evt
Size (bytes)483,952,32097,989,120
Size461.5 MB 93.4 MB
Events in quadrant A3,446,854625,555
Events in quadrant B3,715,215632,658
Events in quadrant C3,426,135606,458
Events in quadrant D3,580,992603,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149581
B0156171
C0147961
D0155442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7170450.627615%
B71701091.520223%
C7171721.004044%
D7170550.767085%

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 7555 7171 0 0 0.00% 0.00%
B 7555 7171 30 30 0.40% 0.42%
C 7556 7172 5 5 0.07% 0.07%
D 7555 7171 27 27 0.36% 0.38%

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 11 47 93539 531.11 865 845 174.5
A 13 254 12500 66.78 865 845 174.5
A 4 2 7782 39.75 865 845 174.5
B 15 33 117989 721.61 860 839 162.3
B 0 190 102773 627.89 860 839 162.3
B 0 219 51277 310.68 860 839 162.3
C 14 238 131815 673.25 831 835 194.6
C 0 207 20324 100.17 831 835 194.6
C 9 54 12821 61.61 831 835 194.6
D 12 233 157738 769.56 841 817 203.9
D 7 238 92061 447.47 841 817 203.9
D 2 136 48945 236.02 841 817 203.9

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