ASTROSAT CZTI

Data Quality Report

Orbit 47893

Creation date: 2024-08-06T19:45:20.627859
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/AS1A13_053T01_9000006370_47893cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47893cztM0_level2_quad_clean.evt
Size (bytes)580,259,520104,659,200
Size553.4 MB 99.8 MB
Events in quadrant A6,788,248698,799
Events in quadrant B3,118,598745,417
Events in quadrant C2,884,215721,757
Events in quadrant D8,168,999536,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244222
B0141192
C0135802
D0288822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67003124.656716%
B6700831.238806%
C6700300.447761%
D6700140721.000000%

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 7770 6701 113 113 1.45% 1.69%
B 7770 6701 18 18 0.23% 0.27%
C 7770 6701 1 1 0.01% 0.01%
D 7770 6701 1237 1237 15.92% 18.46%

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 83 3952562 26326.56 721 703 150.1
A 7 3 31803 207.18 721 703 150.1
A 0 31 15381 97.78 721 703 150.1
B 5 255 85920 597.79 733 710 142.5
B 5 32 62758 435.3 733 710 142.5
B 0 198 35313 242.76 733 710 142.5
C 14 67 24977 141.38 729 731 171.5
C 12 2 5800 29.56 729 731 171.5
C 13 61 4805 23.76 729 731 171.5
D 12 2 2573284 15822.89 646 625 162.6
D 2 37 2492288 15324.74 646 625 162.6
D 2 165 335464 2059.4 646 625 162.6

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