ASTROSAT CZTI

Data Quality Report

Orbit 37341

Creation date: 2024-06-27T21:38:44.502349
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_014T01_9000005314_37341cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37341cztM0_level2_quad_clean.evt
Size (bytes)762,491,520113,123,520
Size727.2 MB 107.9 MB
Events in quadrant A4,040,672777,621
Events in quadrant B4,078,119779,899
Events in quadrant C8,580,983623,597
Events in quadrant D5,896,116732,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164723
B0167492
C0303202
D0224082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7348460.626021%
B73481572.136636%
C7348172723.502994%
D73485837.934132%

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 10275 7350 28 28 0.27% 0.38%
B 10275 7350 85 85 0.83% 1.16%
C 10275 7350 1169 1169 11.38% 15.90%
D 10275 7350 486 486 4.73% 6.61%

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 342762 1926.24 871 857 177.5
A 7 16 130641 731.18 871 857 177.5
A 13 248 115083 643.53 871 857 177.5
B 5 172 305877 1832.1 862 841 166.5
B 5 255 218253 1305.82 862 841 166.5
B 0 213 49839 294.29 862 841 166.5
C 1 23 4205093 24211.46 741 750 173.7
C 14 254 841985 4844.4 741 750 173.7
C 15 214 271001 1556.29 741 750 173.7
D 12 235 842798 4153.0 819 797 202.7
D 12 227 806467 3973.81 819 797 202.7
D 2 249 714681 3521.09 819 797 202.7

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