ASTROSAT CZTI

Data Quality Report

Orbit 57527

Creation date: 2026-05-16T22:16:15.145571
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_57527cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57527cztM0_level2_quad_clean.evt
Size (bytes)415,056,96097,698,240
Size395.8 MB 93.2 MB
Events in quadrant A3,573,357638,509
Events in quadrant B3,481,403674,219
Events in quadrant C4,111,834602,635
Events in quadrant D3,680,871580,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156681
B0149631
C0170571
D0158251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66401231.852410%
B66401281.927711%
C66401912.876506%
D6640971.460843%

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 7200 6641 44 44 0.61% 0.66%
B 7200 6641 50 50 0.69% 0.75%
C 7200 6641 139 139 1.93% 2.09%
D 7200 6641 80 80 1.11% 1.20%

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 532556 2955.68 718 697 179.9
A 7 14 208756 1156.24 718 697 179.9
A 13 248 34305 186.77 718 697 179.9
B 4 206 237861 1585.03 700 672 149.6
B 10 246 138316 919.82 700 672 149.6
B 5 185 100239 665.36 700 672 149.6
C 15 224 1145917 6109.33 684 676 187.5
C 14 246 177171 941.52 684 676 187.5
C 12 252 50065 263.47 684 676 187.5
D 15 142 384082 1963.85 691 662 195.2
D 3 12 155661 793.89 691 662 195.2
D 2 31 137974 703.3 691 662 195.2

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