ASTROSAT CZTI

Data Quality Report

Orbit 44864

Creation date: 2024-06-27T23:07:22.270756
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/AS1A13_017T01_9000006028_44864cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44864cztM0_level2_quad_clean.evt
Size (bytes)490,224,960110,033,280
Size467.5 MB 104.9 MB
Events in quadrant A5,000,685748,772
Events in quadrant B3,290,742775,182
Events in quadrant C3,316,360732,568
Events in quadrant D6,058,386642,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196871
B0138671
C0139181
D0223631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61951863.002421%
B61951211.953188%
C61961221.969012%
D61954697.570621%

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 7370 6196 20 20 0.27% 0.32%
B 7370 6196 18 18 0.24% 0.29%
C 7371 6197 38 38 0.52% 0.61%
D 7370 6196 313 313 4.25% 5.05%

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 2013157 13044.17 746 731 154.3
A 13 248 72993 468.39 746 731 154.3
A 10 248 17374 107.88 746 731 154.3
B 5 255 181743 1235.05 745 724 146.6
B 0 183 58051 391.13 745 724 146.6
B 0 168 44147 296.26 745 724 146.6
C 14 254 167389 970.51 739 744 171.7
C 0 64 89329 515.9 739 744 171.7
C 12 2 73077 421.26 739 744 171.7
D 13 187 1220036 6734.6 723 701 181.1
D 2 249 500999 2763.23 723 701 181.1
D 13 174 454174 2504.61 723 701 181.1

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