ASTROSAT CZTI

Data Quality Report

Orbit 54737

Creation date: 2025-11-13T18:17:28.070955
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_54737cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54737cztM0_level2_quad_clean.evt
Size (bytes)564,327,360106,197,120
Size538.2 MB 101.3 MB
Events in quadrant A3,547,007715,704
Events in quadrant B4,219,117756,759
Events in quadrant C6,039,815625,021
Events in quadrant D6,496,902592,338

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161723
B0180383
C0234883
D0245778

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75511251.655410%
B75522673.535487%
C755289811.890890%
D75517279.627864%

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 9176 7554 15 15 0.16% 0.20%
B 9177 7554 50 50 0.54% 0.66%
C 9177 7555 843 843 9.19% 11.16%
D 9175 7552 617 617 6.72% 8.17%

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 14 123579 601.78 824 803 204.0
A 0 8 82164 398.79 824 803 204.0
A 8 246 41821 201.05 824 803 204.0
B 2 249 202586 1160.26 809 779 173.9
B 5 185 191985 1099.31 809 779 173.9
B 0 173 188408 1078.74 809 779 173.9
C 4 5 2121280 10150.94 765 760 208.9
C 1 16 368707 1761.36 765 760 208.9
C 6 223 189730 904.6 765 760 208.9
D 11 129 1439043 6613.49 766 733 217.5
D 15 94 951670 4372.5 766 733 217.5
D 3 12 403456 1851.76 766 733 217.5

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