ASTROSAT CZTI

Data Quality Report

Orbit 54205

Creation date: 2025-10-05T10:30:31.620158
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/AS1C09_004T08_9000006514_54205cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54205cztM0_level2_quad_clean.evt
Size (bytes)1,303,755,840284,143,680
Size1.2 GB 271.0 MB
Events in quadrant A10,229,7011,869,580
Events in quadrant B11,965,9961,992,480
Events in quadrant C10,676,2841,755,615
Events in quadrant D13,817,0191,587,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453502
B0502873
C0472952
D0554032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202993861.901572%
B202987773.827963%
C202995772.842505%
D202999884.867235%

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 21320 20302 232 232 1.09% 1.14%
B 21319 20300 310 310 1.45% 1.53%
C 21320 20302 444 444 2.08% 2.19%
D 21320 20303 884 884 4.15% 4.35%

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 7 29 444455 831.65 2150 2096 531.9
A 3 130 350356 654.74 2150 2096 531.9
A 0 8 334489 624.91 2150 2096 531.9
B 4 171 2003417 4430.49 2131 2055 451.7
B 5 185 392034 863.31 2131 2055 451.7
B 5 236 269906 592.95 2131 2055 451.7
C 12 252 634645 1111.53 2086 2065 569.1
C 1 241 493984 864.37 2086 2065 569.1
C 12 2 408780 714.65 2086 2065 569.1
D 8 176 3211358 5523.34 2053 1960 581.1
D 3 12 813723 1397.03 2053 1960 581.1
D 2 172 382896 655.59 2053 1960 581.1

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