ASTROSAT CZTI

Data Quality Report

Orbit 26407

Creation date: 2024-06-27T19:28:38.259626
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_127T01_9000003816_26407cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26407cztM0_level2_quad_clean.evt
Size (bytes)639,005,76097,928,640
Size609.4 MB 93.4 MB
Events in quadrant A3,961,595611,534
Events in quadrant B4,920,097614,615
Events in quadrant C5,301,021588,839
Events in quadrant D4,620,288587,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171640
B0199190
C0210680
D0193590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81112212.724695%
B81124395.411736%
C81115036.201455%
D81113003.698681%

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 8616 8113 7 7 0.08% 0.09%
B 8617 8114 96 96 1.11% 1.18%
C 8616 8113 114 114 1.32% 1.41%
D 8616 8113 126 126 1.46% 1.55%

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 158855 790.39 983 959 199.8
A 13 254 13794 64.25 983 959 199.8
A 5 203 12699 58.77 983 959 199.8
B 0 189 657444 3500.83 974 946 187.5
B 5 172 338128 1798.05 974 946 187.5
B 0 230 35452 184.01 974 946 187.5
C 3 233 781582 3516.7 939 941 222.0
C 4 254 382567 1719.18 939 941 222.0
C 2 16 301497 1353.97 939 941 222.0
D 1 52 868292 3868.11 949 926 224.2
D 12 233 51434 225.25 949 926 224.2
D 2 234 43004 187.65 949 926 224.2

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