ASTROSAT CZTI

Data Quality Report

Orbit 54724

Creation date: 2025-11-11T18:49:46.134876
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_54724cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54724cztM0_level2_quad_clean.evt
Size (bytes)553,942,080117,463,680
Size528.3 MB 112.0 MB
Events in quadrant A3,784,309771,536
Events in quadrant B6,243,850798,328
Events in quadrant C5,248,741721,279
Events in quadrant D4,579,317684,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176533
B0244743
C0217753
D0198453

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8357560.670097%
B83585426.484805%
C83582843.397942%
D83581511.806652%

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 8582 8361 9 9 0.10% 0.11%
B 8583 8362 416 416 4.85% 4.97%
C 8583 8362 331 331 3.86% 3.96%
D 8583 8362 118 118 1.37% 1.41%

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 7 190 88986 404.1 878 856 218.1
A 4 206 78422 355.66 878 856 218.1
A 4 3 42826 192.44 878 856 218.1
B 2 249 1606747 8738.18 856 826 183.8
B 0 173 417081 2264.94 856 826 183.8
B 5 185 377257 2048.25 856 826 183.8
C 9 38 953255 4064.27 848 840 234.3
C 13 3 318596 1355.97 848 840 234.3
C 6 223 218438 928.56 848 840 234.3
D 2 172 286156 1180.38 841 801 241.7
D 2 62 220371 908.26 841 801 241.7
D 8 240 205752 847.79 841 801 241.7

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