ASTROSAT CZTI

Data Quality Report

Orbit 50648

Creation date: 2025-02-07T21:37:13.636787
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/AS1T05_241T01_9000006446_50648cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50648cztM0_level2_quad_clean.evt
Size (bytes)670,677,12085,144,320
Size639.6 MB 81.2 MB
Events in quadrant A4,669,091567,809
Events in quadrant B5,514,488609,905
Events in quadrant C8,474,495460,340
Events in quadrant D5,676,738495,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181711
B0207941
C0296438
D0214032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63554196.593234%
B63554777.505901%
C6355149523.524784%
D63556179.708891%

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 7210 6356 293 293 4.06% 4.61%
B 7210 6356 310 310 4.30% 4.88%
C 7211 6357 1164 1164 16.14% 18.31%
D 7210 6356 549 549 7.61% 8.64%

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 3 130 954930 5828.7 656 637 163.7
A 4 4 417501 2546.15 656 637 163.7
A 4 3 170433 1037.09 656 637 163.7
B 4 170 1916175 13869.79 650 628 138.1
B 5 185 319906 2311.78 650 628 138.1
B 10 247 165028 1190.36 650 628 138.1
C 4 5 1478863 9011.7 592 588 164.0
C 0 209 1189701 7248.94 592 588 164.0
C 15 1 1167477 7113.46 592 588 164.0
D 2 249 1221822 7010.16 629 609 174.2
D 8 246 602168 3453.14 629 609 174.2
D 15 170 300349 1720.6 629 609 174.2

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