ASTROSAT CZTI

Data Quality Report

Orbit 17229

Creation date: 2024-06-27T17:33:52.020183
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/AS1A05_185T04_9000002548_17229cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17229cztM0_level2_quad_clean.evt
Size (bytes)617,258,880103,069,440
Size588.7 MB 98.3 MB
Events in quadrant A4,194,679652,392
Events in quadrant B4,600,003648,266
Events in quadrant C4,195,808624,835
Events in quadrant D5,120,869599,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182942
B0195632
C0178712
D0215312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8585850.990099%
B85861742.026555%
C85861201.397624%
D85864174.856744%

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 9415 8587 7 7 0.07% 0.08%
B 9416 8588 25 25 0.27% 0.29%
C 9416 8588 1 1 0.01% 0.01%
D 9416 8588 188 188 2.00% 2.19%

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 23 212987 1007.36 1031 1007 210.4
A 0 226 21831 98.96 1031 1007 210.4
A 3 137 7675 31.69 1031 1007 210.4
B 0 189 205198 1025.89 1030 1003 199.0
B 7 220 146125 729.1 1030 1003 199.0
B 4 216 86955 431.83 1030 1003 199.0
C 3 233 170988 725.37 993 999 234.3
C 14 238 150008 635.84 993 999 234.3
C 5 112 7435 27.46 993 999 234.3
D 1 52 681425 2816.06 988 959 241.6
D 10 70 291235 1201.29 988 959 241.6
D 10 199 149293 613.87 988 959 241.6

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