ASTROSAT CZTI

Data Quality Report

Orbit 24873

Creation date: 2024-06-27T19:10:50.896775
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/AS1A07_027T02_9000003640_24873cztM0_level2.evt modeM0/AS1A07_027T02_9000003640_24873cztM0_level2_quad_clean.evt
Size (bytes)559,869,12089,268,480
Size533.9 MB 85.1 MB
Events in quadrant A4,534,976557,799
Events in quadrant B3,571,653564,095
Events in quadrant C4,409,607542,087
Events in quadrant D3,951,523538,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180891
B0149831
C0174711
D0162271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71894476.217833%
B71901662.308762%
C71893104.312144%
D71891542.142162%

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 7469 7190 293 293 3.92% 4.08%
B 7470 7191 5 5 0.07% 0.07%
C 7469 7190 91 91 1.22% 1.27%
D 7469 7190 47 47 0.63% 0.65%

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 6 16 1125049 6428.49 864 843 174.9
A 4 2 76364 431.85 864 843 174.9
A 13 254 10422 54.78 864 843 174.9
B 7 205 83738 501.78 862 841 165.2
B 0 190 35102 207.39 862 841 165.2
B 12 111 21031 122.21 862 841 165.2
C 7 247 923534 4718.59 833 837 195.5
C 14 238 132118 671.36 833 837 195.5
C 2 16 102308 518.91 833 837 195.5
D 7 238 282787 1363.54 852 828 206.8
D 1 52 261884 1262.46 852 828 206.8
D 8 195 173592 835.48 852 828 206.8

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