ASTROSAT CZTI

Data Quality Report

Orbit 40230

Creation date: 2024-06-27T22:12:01.385683
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/AS1A12_054T03_9000005516_40230cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40230cztM0_level2_quad_clean.evt
Size (bytes)40,487,04011,511,360
Size38.6 MB 11.0 MB
Events in quadrant A362,89168,722
Events in quadrant B317,53884,659
Events in quadrant C360,71275,428
Events in quadrant D404,57967,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063
B030
C020
D052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153
B0173
C0182
D0162

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02066660
B01634268
C01820397
D02099471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59550.840336%
B67220.297619%
C64160.936037%
D63860.940439%

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 828 713 3 3 0.36% 0.42%
B 828 767 0 0 0.00% 0.00%
C 828 752 4 4 0.48% 0.53%
D 828 743 2 2 0.24% 0.27%

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 10 83 75193 4778.06 66 65 15.7
A 13 248 31197 1979.96 66 65 15.7
A 13 254 852 50.05 66 65 15.7
B 0 245 6777 386.44 77 75 17.3
B 0 230 2053 114.05 77 75 17.3
B 4 171 2004 111.23 77 75 17.3
C 15 214 30372 1587.8 73 73 19.1
C 14 254 23575 1231.61 73 73 19.1
C 0 10 11603 604.22 73 73 19.1
D 12 227 75468 4039.92 70 68 18.7
D 13 249 32383 1731.43 70 68 18.7
D 2 249 14380 766.84 70 68 18.7

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