ASTROSAT CZTI

Data Quality Report

Orbit 16407

Creation date: 2024-06-27T17:22:13.630617
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/AS1A05_069T02_9000002422_16407cztM0_level2.evt modeM0/AS1A05_069T02_9000002422_16407cztM0_level2_quad_clean.evt
Size (bytes)579,018,240101,727,360
Size552.2 MB 97.0 MB
Events in quadrant A4,063,745652,987
Events in quadrant B3,933,315668,830
Events in quadrant C3,583,731640,371
Events in quadrant D5,455,238605,410

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169351
B0163521
C0153771
D0214731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73752293.105085%
B7375981.328814%
C73751101.491525%
D73753674.976271%

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 7857 7376 134 134 1.71% 1.82%
B 7857 7376 20 20 0.25% 0.27%
C 7857 7376 27 27 0.34% 0.37%
D 7857 7376 281 281 3.58% 3.81%

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 15 174 618269 3483.78 869 852 177.2
A 9 143 71135 396.57 869 852 177.2
A 15 223 26958 147.3 869 852 177.2
B 10 16 115682 687.64 871 849 167.0
B 0 189 109607 651.27 871 849 167.0
B 0 198 75077 444.49 871 849 167.0
C 14 238 128579 648.08 837 844 197.1
C 10 169 83773 420.75 837 844 197.1
C 3 233 65859 329.86 837 844 197.1
D 1 20 1298162 6330.22 841 817 204.9
D 10 70 490206 2387.9 841 817 204.9
D 12 218 213655 1038.51 841 817 204.9

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