ASTROSAT CZTI

Data Quality Report

Orbit 32125

Creation date: 2024-06-27T20:36:45.992823
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/AS1T04_051T01_9000004686_32125cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32125cztM0_level2_quad_clean.evt
Size (bytes)750,136,320113,469,120
Size715.4 MB 108.2 MB
Events in quadrant A3,729,199752,105
Events in quadrant B8,450,323706,564
Events in quadrant C3,998,959736,931
Events in quadrant D6,024,753710,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157960
B0305400
C0165780
D0233140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76221301.705589%
B7623121915.991080%
C76232453.213958%
D76232072.715466%

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 7622 7622 0 0 0.00% 0.00%
B 7623 7623 666 666 8.74% 8.74%
C 7623 7623 1 1 0.01% 0.01%
D 7623 7623 89 89 1.17% 1.17%

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 6 17896 87.44 961 939 193.9
A 13 254 15248 73.78 961 939 193.9
A 3 137 9849 45.94 961 939 193.9
B 10 245 2312654 13179.99 914 890 175.4
B 6 159 2055630 11714.63 914 890 175.4
B 5 172 269531 1531.59 914 890 175.4
C 0 10 197617 913.89 914 919 215.2
C 14 238 168386 778.08 914 919 215.2
C 14 254 29159 131.21 914 919 215.2
D 8 195 1845305 8326.33 927 900 221.5
D 12 233 293072 1318.97 927 900 221.5
D 10 199 166119 745.86 927 900 221.5

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