ASTROSAT CZTI

Data Quality Report

Orbit 10806

Creation date: 2024-06-27T16:04:07.547338
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/AS1A03_071T01_9000001562_10806cztM0_level2.evt modeM0/AS1A03_071T01_9000001562_10806cztM0_level2_quad_clean.evt
Size (bytes)2,592,443,520345,369,600
Size2.4 GB 329.4 MB
Events in quadrant A22,635,0422,053,296
Events in quadrant B25,063,6662,067,676
Events in quadrant C12,494,7832,290,623
Events in quadrant D16,441,1122,129,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0864797
B0934287
C0573937
D0692455

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05680
B05680
C05680
D05680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27890294710.566511%
B27890404214.492650%
C278901480.530656%
D278916752.420136%

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 29911 27897 2114 2114 7.07% 7.58%
B 29911 27898 2872 2872 9.60% 10.29%
C 29911 27898 27 27 0.09% 0.10%
D 29911 27898 445 445 1.49% 1.60%

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 8 5 10422583 16918.62 3056 2989 615.9
A 15 174 330243 531.37 3056 2989 615.9
A 13 251 60103 92.74 3056 2989 615.9
B 4 239 7602461 13287.86 3042 2969 571.9
B 0 85 3574621 6245.1 3042 2969 571.9
B 15 204 885544 1543.2 3042 2969 571.9
C 14 234 180313 243.03 3155 3174 728.9
C 13 61 23589 28.01 3155 3174 728.9
C 8 222 14744 15.87 3155 3174 728.9
D 13 138 1679202 2256.46 3098 3012 742.8
D 8 195 856315 1148.7 3098 3012 742.8
D 12 233 701466 940.25 3098 3012 742.8

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