ASTROSAT CZTI

Data Quality Report

Orbit 26118

Creation date: 2024-06-27T19:25:02.247704
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/AS1A09_138T04_9000003776_26118cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26118cztM0_level2_quad_clean.evt
Size (bytes)565,073,28084,107,520
Size538.9 MB 80.2 MB
Events in quadrant A3,814,785510,715
Events in quadrant B3,751,697523,564
Events in quadrant C3,809,844493,800
Events in quadrant D5,225,314494,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160640
B0157710
C0159920
D0205120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75421261.670644%
B75431421.882540%
C75421542.041899%
D75424195.555556%

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 7822 7542 6 6 0.08% 0.08%
B 7823 7543 0 0 0.00% 0.00%
C 7822 7542 2 2 0.03% 0.03%
D 7822 7542 308 308 3.94% 4.08%

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 180808 937.47 942 919 191.9
A 13 254 11186 53.51 942 919 191.9
A 3 137 8861 41.39 942 919 191.9
B 0 190 43586 236.8 931 907 180.2
B 5 172 25852 138.4 931 907 180.2
B 12 111 22000 117.03 931 907 180.2
C 14 238 140782 659.49 894 901 212.1
C 3 233 99896 466.73 894 901 212.1
C 2 16 52071 241.25 894 901 212.1
D 7 80 959684 4396.35 900 880 218.1
D 13 168 512423 2345.55 900 880 218.1
D 1 52 133769 609.33 900 880 218.1

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