ASTROSAT CZTI

Data Quality Report

Orbit 50931

Creation date: 2025-02-27T09:22:42.439690
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/AS1C07_001T01_9000006450_50931cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50931cztM0_level2_quad_clean.evt
Size (bytes)503,579,52092,802,240
Size480.3 MB 88.5 MB
Events in quadrant A5,209,866599,270
Events in quadrant B3,322,086667,098
Events in quadrant C4,085,717581,724
Events in quadrant D5,513,616504,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199111
B0147001
C0166081
D0210451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65613885.913733%
B65611472.240512%
C65622453.733618%
D656276411.642792%

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 7371 6561 260 260 3.53% 3.96%
B 7371 6561 21 21 0.28% 0.32%
C 7371 6561 170 170 2.31% 2.59%
D 7371 6561 782 782 10.61% 11.92%

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 14 254 1507431 8947.31 684 667 168.4
A 15 174 157079 928.79 684 667 168.4
A 4 3 140346 829.42 684 667 168.4
B 15 54 119587 820.3 688 664 145.0
B 8 128 98742 676.52 688 664 145.0
B 7 252 54458 371.06 688 664 145.0
C 12 252 491018 2666.34 671 664 183.9
C 12 247 172823 936.13 671 664 183.9
C 1 60 145087 785.31 671 664 183.9
D 8 176 2098617 11762.6 646 623 178.4
D 2 249 246463 1378.32 646 623 178.4
D 3 12 142912 797.76 646 623 178.4

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