ASTROSAT CZTI

Data Quality Report

Orbit 04997

Creation date: 2024-06-27T14:49:54.182917
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/AS1G05_115T01_9000000634_04997cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04997cztM0_level2_quad_clean.evt
Size (bytes)510,298,56076,789,440
Size486.7 MB 73.2 MB
Events in quadrant A3,332,109458,248
Events in quadrant B3,729,379457,743
Events in quadrant C3,200,545459,908
Events in quadrant D4,695,940440,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510413
B01610019
C0149529
D01900330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73071171.601204%
B73051682.299795%
C7309370.506225%
D73063304.516835%

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 7628 7314 0 0 0.00% 0.00%
B 7628 7314 27 27 0.35% 0.37%
C 7628 7314 0 0 0.00% 0.00%
D 7628 7314 234 234 3.07% 3.20%

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 13 251 49968 282.99 843 823 173.7
A 0 50 32176 180.54 843 823 173.7
A 12 194 8594 44.75 843 823 173.7
B 4 80 148804 912.56 847 826 162.2
B 0 219 126597 775.61 847 826 162.2
B 15 204 65521 398.97 847 826 162.2
C 13 61 6866 31.96 818 821 189.1
C 12 4 3490 14.11 818 821 189.1
C 8 222 2738 10.14 818 821 189.1
D 2 33 519144 2607.59 811 785 198.8
D 2 136 248935 1248.31 811 785 198.8
D 13 235 242719 1217.04 811 785 198.8

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