ASTROSAT CZTI

Data Quality Report

Orbit 13640

Creation date: 2024-06-27T16:43:55.398676
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/AS1G08_038T02_9000002020_13640cztM0_level2.evt modeM0/AS1G08_038T02_9000002020_13640cztM0_level2_quad_clean.evt
Size (bytes)615,427,20092,292,480
Size586.9 MB 88.0 MB
Events in quadrant A3,861,859532,776
Events in quadrant B4,172,470544,722
Events in quadrant C4,070,440594,739
Events in quadrant D5,984,055559,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168783
B0176142
C0170092
D0231662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80972002.470051%
B80972603.211066%
C80971812.235396%
D809785310.534766%

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 8518 8101 3 3 0.04% 0.04%
B 8518 8101 5 5 0.06% 0.06%
C 8518 8101 8 8 0.09% 0.10%
D 8518 8101 362 362 4.25% 4.47%

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 15 69 29603 140.46 995 969 203.9
A 0 226 8830 38.56 995 969 203.9
A 12 194 7649 32.77 995 969 203.9
B 0 219 177567 934.04 990 962 189.1
B 0 182 25491 129.73 990 962 189.1
B 4 142 22704 114.99 990 962 189.1
C 3 233 209202 927.52 978 984 224.5
C 14 234 44762 195.01 978 984 224.5
C 13 61 6901 26.36 978 984 224.5
D 5 222 1248825 5521.17 943 916 226.0
D 8 195 371599 1640.03 943 916 226.0
D 13 122 264296 1165.28 943 916 226.0

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