ASTROSAT CZTI

Data Quality Report

Orbit 31728

Creation date: 2024-06-27T20:32:00.355205
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_034T01_9000004632_31728cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31728cztM0_level2_quad_clean.evt
Size (bytes)666,777,60070,416,000
Size635.9 MB 67.2 MB
Events in quadrant A4,972,826427,860
Events in quadrant B6,242,728429,757
Events in quadrant C4,085,435422,563
Events in quadrant D4,472,096417,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190842
B0226952
C0162082
D0172732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62334947.925558%
B62333505.615274%
C62333335.342532%
D6233811.299535%

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 7568 6234 303 303 4.00% 4.86%
B 7568 6234 99 99 1.31% 1.59%
C 7568 6234 135 135 1.78% 2.17%
D 7568 6234 21 21 0.28% 0.34%

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 0 13 1538897 8804.18 888 875 174.7
A 13 254 11966 63.49 888 875 174.7
A 3 137 8111 41.42 888 875 174.7
B 6 159 1703069 10390.88 894 876 163.8
B 4 80 765643 4668.45 894 876 163.8
B 0 229 97132 587.59 894 876 163.8
C 0 10 508010 2549.17 865 872 198.9
C 14 238 143808 718.48 865 872 198.9
C 10 22 22965 111.05 865 872 198.9
D 8 195 881617 4097.24 903 883 215.0
D 12 233 82483 379.61 903 883 215.0
D 13 249 63044 289.18 903 883 215.0

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