ASTROSAT CZTI

Data Quality Report

Orbit 53373

Creation date: 2025-08-10T09:17:58.550718
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_011T09_9000006494_53373cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53373cztM0_level2_quad_clean.evt
Size (bytes)800,740,800107,400,960
Size763.6 MB 102.4 MB
Events in quadrant A5,038,875734,715
Events in quadrant B5,797,750785,509
Events in quadrant C12,067,181520,347
Events in quadrant D6,119,316656,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208380
B0229020
C0413870
D0239427

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79823444.309697%
B79834886.112990%
C7983263933.057748%
D79825266.589827%

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 7982 7982 281 281 3.52% 3.52%
B 7983 7983 269 269 3.37% 3.37%
C 7983 7983 2405 2405 30.13% 30.13%
D 7982 7982 440 440 5.51% 5.51%

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 15 174 995752 4825.58 820 798 206.2
A 8 245 282479 1366.17 820 798 206.2
A 0 8 129560 624.5 820 798 206.2
B 4 206 854531 4934.01 816 787 173.0
B 2 249 581837 3358.04 816 787 173.0
B 10 28 394937 2277.9 816 787 173.0
C 15 178 6172307 31360.72 718 712 196.8
C 15 224 1205745 6123.33 718 712 196.8
C 1 241 760589 3861.29 718 712 196.8
D 2 153 1475126 6573.62 790 755 224.3
D 2 62 484294 2155.9 790 755 224.3
D 7 70 170785 758.09 790 755 224.3

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