ASTROSAT CZTI

Data Quality Report

Orbit 57120

Creation date: 2026-04-19T13:17:14.676420
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_083T10_9000006566_57120cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57120cztM0_level2_quad_clean.evt
Size (bytes)557,398,08086,872,320
Size531.6 MB 82.8 MB
Events in quadrant A2,990,590615,904
Events in quadrant B3,165,285651,841
Events in quadrant C6,589,387428,282
Events in quadrant D7,387,670485,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136821
B0138841
C0240941
D0264233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64301251.944012%
B64312103.265433%
C6431195730.430726%
D643096715.038880%

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 6985 6431 19 19 0.27% 0.30%
B 6986 6431 19 19 0.27% 0.30%
C 6986 6432 1420 1420 20.33% 22.08%
D 6985 6430 922 922 13.20% 14.34%

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 10 251 138042 790.53 707 689 173.7
A 8 6 34984 197.38 707 689 173.7
A 3 14 33948 191.42 707 689 173.7
B 0 171 133489 907.08 691 664 146.4
B 10 16 97876 663.87 691 664 146.4
B 10 247 38001 254.98 691 664 146.4
C 15 198 3500500 22976.8 560 555 152.3
C 12 252 374220 2453.07 560 555 152.3
C 1 16 166326 1088.27 560 555 152.3
D 15 142 4188206 22701.96 652 618 184.5
D 12 33 160646 867.55 652 618 184.5
D 8 240 94294 507.84 652 618 184.5

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