ASTROSAT CZTI

Data Quality Report

Orbit 59026

Creation date: 2026-08-27T20:38:49.404193
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_004T02_9000006600_59026cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59026cztM0_level2_quad_clean.evt
Size (bytes)1,099,549,44078,261,120
Size1.0 GB 74.6 MB
Events in quadrant A4,658,327716,844
Events in quadrant B4,406,774756,033
Events in quadrant C18,087,10512,974
Events in quadrant D12,973,220365,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186030
B0183420
C0584813
D0436960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74501261.691275%
B74512683.596833%
C7450734998.644295%
D7450344546.241611%

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 7450 7450 115 115 1.54% 1.54%
B 7451 7451 187 187 2.51% 2.51%
C 7450 7450 7130 7130 95.70% 95.70%
D 7450 7450 3457 3457 46.40% 46.40%

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 24 1008815 4902.03 830 806 205.6
A 10 251 269029 1304.39 830 806 205.6
A 14 238 48787 233.34 830 806 205.6
B 4 236 552904 3177.57 812 781 173.8
B 2 249 196856 1128.45 812 781 173.8
B 5 185 191709 1098.83 812 781 173.8
C 15 219 16651494 175153.93 342 338 95.1
C 1 16 30897 321.45 342 338 95.1
C 12 252 22359 231.64 342 338 95.1
D 12 1 8346631 50205.73 579 552 166.2
D 12 110 1591257 9568.86 579 552 166.2
D 2 62 214114 1284.68 579 552 166.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct