ASTROSAT CZTI

Data Quality Report

Orbit 45274

Creation date: 2024-06-27T23:11:49.427963
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_024T03_9000006064_45274cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45274cztM0_level2_quad_clean.evt
Size (bytes)526,933,440113,120,640
Size502.5 MB 107.9 MB
Events in quadrant A5,767,617747,945
Events in quadrant B3,616,448790,113
Events in quadrant C4,081,300747,835
Events in quadrant D5,491,262646,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222421
B0156801
C0173421
D0213771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70712723.846698%
B70711842.602178%
C70722122.997738%
D70726088.597285%

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 7621 7071 60 60 0.79% 0.85%
B 7621 7071 45 45 0.59% 0.64%
C 7622 7073 153 153 2.01% 2.16%
D 7622 7072 502 502 6.59% 7.10%

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 2514871 15090.16 792 774 166.6
A 13 248 174859 1044.9 792 774 166.6
A 7 3 12672 71.41 792 774 166.6
B 4 171 283564 1783.47 793 770 158.6
B 5 172 49743 308.85 793 770 158.6
B 0 190 43077 266.81 793 770 158.6
C 14 254 446641 2439.37 774 777 182.8
C 12 2 316178 1725.6 774 777 182.8
C 12 16 287975 1571.29 774 777 182.8
D 13 249 929717 4859.3 753 731 191.2
D 12 33 679374 3549.81 753 731 191.2
D 9 49 482322 2519.08 753 731 191.2

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