ASTROSAT CZTI

Data Quality Report

Orbit 54793

Creation date: 2025-11-13T22:59:04.476894
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_103T01_9000006524_54793cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54793cztM0_level2_quad_clean.evt
Size (bytes)490,299,84095,094,720
Size467.6 MB 90.7 MB
Events in quadrant A2,864,417633,130
Events in quadrant B3,767,882676,887
Events in quadrant C7,327,099539,671
Events in quadrant D3,673,808566,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137622
B0160592
C0263712
D0157612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66461031.549804%
B66461902.858862%
C664696214.474872%
D66461842.768583%

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 7771 6646 6 6 0.08% 0.09%
B 7771 6646 92 92 1.18% 1.38%
C 7771 6647 882 882 11.35% 13.27%
D 7771 6647 109 109 1.40% 1.64%

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 5 240 21602 119.11 713 696 175.5
A 13 254 19097 104.84 713 696 175.5
A 3 14 17215 94.12 713 696 175.5
B 2 249 844584 5634.69 699 674 149.8
B 5 185 60913 402.21 699 674 149.8
B 6 255 47609 313.38 699 674 149.8
C 9 38 3813786 20990.02 657 651 181.7
C 13 3 315254 1731.78 657 651 181.7
C 6 223 210477 1155.02 657 651 181.7
D 3 12 428820 2209.09 685 656 193.8
D 14 52 90466 463.37 685 656 193.8
D 15 94 59496 303.58 685 656 193.8

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