ASTROSAT CZTI

Data Quality Report

Orbit 01272

Creation date: 2024-06-27T14:10:10.530327
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/AS1G04_011T02_9000000226_01272cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01272cztM0_level2_quad_clean.evt
Size (bytes)1,213,704,000107,239,680
Size1.1 GB 102.3 MB
Events in quadrant A7,683,085716,523
Events in quadrant B8,929,100723,685
Events in quadrant C7,967,153695,011
Events in quadrant D11,742,668652,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274593
B0311532
C0282962
D0395032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A659330.045503%
B6593290.439860%
C6593210.318520%
D65932944.459275%

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 7858 6594 143 143 1.82% 2.17%
B 7858 6593 447 447 5.69% 6.78%
C 7858 6594 133 133 1.69% 2.02%
D 7858 6593 1847 1847 23.50% 28.01%

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 11 79 8049 12.78 1998 2012 472.4
A 3 111 6284 9.04 1998 2012 472.4
A 13 235 5509 7.4 1998 2012 472.4
B 8 4 648026 1319.29 2102 2108 489.6
B 6 53 170387 343.71 2102 2108 489.6
B 15 22 62351 123.05 2102 2108 489.6
C 15 241 297803 556.16 1928 1994 531.9
C 8 208 54197 98.15 1928 1994 531.9
C 7 159 26969 46.96 1928 1994 531.9
D 13 169 4419297 7913.46 1829 1896 558.2
D 10 84 347401 618.95 1829 1896 558.2
D 13 205 35332 59.9 1829 1896 558.2

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