ASTROSAT CZTI

Data Quality Report

Orbit 31402

Creation date: 2024-06-27T20:27:51.750797
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/AS1T04_026T01_9000004556_31402cztM0_level2.evt modeM0/AS1T04_026T01_9000004556_31402cztM0_level2_quad_clean.evt
Size (bytes)792,895,68094,078,080
Size756.2 MB 89.7 MB
Events in quadrant A3,444,291645,099
Events in quadrant B5,368,919646,040
Events in quadrant C3,855,167613,398
Events in quadrant D10,893,432477,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147541
B0216881
C0158851
D0371391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D0-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71521241.733781%
B71532032.837970%
C71534326.039424%
D7152277238.758389%

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 7367 7153 0 0 0.00% 0.00%
B 7368 7154 1 1 0.01% 0.01%
C 7368 7154 1 1 0.01% 0.01%
D 7367 7153 2384 2384 32.36% 33.33%

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 13 254 12317 63.32 893 874 180.7
A 3 137 9458 47.5 893 874 180.7
A 0 226 7561 37.0 893 874 180.7
B 6 159 1869820 10986.56 875 852 170.1
B 4 80 22710 128.49 875 852 170.1
B 12 111 22008 124.36 875 852 170.1
C 14 238 224274 1108.66 844 849 201.5
C 14 254 128438 633.11 844 849 201.5
C 3 233 101386 498.88 844 849 201.5
D 12 218 7330852 40848.41 740 719 179.4
D 8 195 256846 1427.31 740 719 179.4
D 12 250 172873 959.36 740 719 179.4

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