ASTROSAT CZTI

Data Quality Report

Orbit 56555

Creation date: 2026-03-12T12:50:21.859675
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_060T01_9000006556_56555cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56555cztM0_level2_quad_clean.evt
Size (bytes)689,388,480116,674,560
Size657.5 MB 111.3 MB
Events in quadrant A4,220,134820,964
Events in quadrant B9,921,836610,905
Events in quadrant C4,366,362797,828
Events in quadrant D6,328,017693,366

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189200
B0355540
C0193930
D0249401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87821762.004099%
B8783285632.517363%
C87831631.855858%
D87826867.811432%

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 8782 8782 6 6 0.07% 0.07%
B 8782 8782 2096 2096 23.87% 23.87%
C 8783 8783 40 40 0.46% 0.46%
D 8782 8782 409 409 4.66% 4.66%

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 0 8 182518 727.9 1009 981 249.4
A 8 249 23241 89.25 1009 981 249.4
A 7 64 21699 83.07 1009 981 249.4
B 5 172 6337618 36761.92 792 763 172.4
B 4 206 171131 988.35 792 763 172.4
B 10 247 87378 502.48 792 763 172.4
C 15 230 217569 802.74 994 985 269.8
C 12 252 120370 442.49 994 985 269.8
C 7 2 25620 91.31 994 985 269.8
D 2 249 1624003 6139.02 944 902 264.4
D 8 129 343600 1296.18 944 902 264.4
D 14 52 157652 592.87 944 902 264.4

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