ASTROSAT CZTI

Data Quality Report

Orbit 57496

Creation date: 2026-05-14T19:35:28.918643
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/AS1A14_113T09_9000006574_57496cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57496cztM0_level2_quad_clean.evt
Size (bytes)507,283,20088,536,960
Size483.8 MB 84.4 MB
Events in quadrant A2,886,979612,232
Events in quadrant B5,633,000564,279
Events in quadrant C4,802,188557,242
Events in quadrant D4,971,980512,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132141
B0210231
C0185771
D0189831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62241001.606684%
B6225103516.626506%
C62254687.518072%
D622564510.361446%

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 7303 6224 36 36 0.49% 0.58%
B 7304 6225 744 744 10.19% 11.95%
C 7304 6225 392 392 5.37% 6.30%
D 7304 6225 708 708 9.69% 11.37%

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 13 153 166010 978.91 688 671 168.9
A 3 14 32205 186.7 688 671 168.9
A 7 14 8887 48.64 688 671 168.9
B 4 206 2518349 18848.29 627 606 133.6
B 5 185 320603 2395.56 627 606 133.6
B 10 247 78681 584.48 627 606 133.6
C 15 224 2041229 11663.36 637 630 175.0
C 14 254 111167 631.79 637 630 175.0
C 12 252 67021 379.47 637 630 175.0
D 8 240 1805540 9766.43 652 623 184.8
D 3 12 215706 1163.82 652 623 184.8
D 15 201 98612 530.22 652 623 184.8

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