ASTROSAT CZTI

Data Quality Report

Orbit 54913

Creation date: 2025-11-22T01:16:38.089253
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_014T01_9000006528_54913cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54913cztM0_level2_quad_clean.evt
Size (bytes)608,123,520108,190,080
Size580.0 MB 103.2 MB
Events in quadrant A5,928,724710,253
Events in quadrant B3,670,822778,362
Events in quadrant C5,735,067640,678
Events in quadrant D6,572,040604,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02309010
B0163603
C0226381
D0251561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77902623.363286%
B7792210.269507%
C77946968.929946%
D77946908.852964%

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 7794 7793 175 175 2.25% 2.25%
B 7794 7793 7 7 0.09% 0.09%
C 7795 7795 474 474 6.08% 6.08%
D 7795 7795 553 553 7.09% 7.09%

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 1235314 5982.16 831 811 206.4
A 0 250 593796 2873.49 831 811 206.4
A 0 8 560184 2710.61 831 811 206.4
B 5 236 223409 1250.39 828 797 178.0
B 5 185 111957 624.38 828 797 178.0
B 7 252 27985 152.71 828 797 178.0
C 4 5 1193298 5553.97 788 782 214.7
C 6 223 733618 3413.08 788 782 214.7
C 13 3 304095 1412.64 788 782 214.7
D 15 94 646194 2873.52 786 751 224.6
D 14 52 590677 2626.36 786 751 224.6
D 3 12 560084 2490.16 786 751 224.6

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