ASTROSAT CZTI

Data Quality Report

Orbit 20160912_G05_104T01_9000000656_level2

Creation date: 2025-11-06T11:50:04.552366
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/AS1G05_104T01_9000000656cztM0_level2.fits modeM0/AS1G05_104T01_9000000656cztM0_level2_quad_clean.evt
Size (bytes)592,862,400744,828,480
Size565.4 MB 710.3 MB
Events in quadrant A3,544,0864,687,574
Events in quadrant B3,448,8764,722,028
Events in quadrant C3,538,4224,611,123
Events in quadrant D2,974,4244,091,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013280
B013200
C013300
D013260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01349170
B01351640
C01322450
D01638050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648828121.251503%
B648466651.025507%
C648713940.607359%
D6471428244.363816%

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 77873 65256 0 0 0.00% 0.00%
B 77875 65225 0 0 0.00% 0.00%
C 77874 65258 0 0 0.00% 0.00%
D 77875 64972 0 0 0.00% 0.00%

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 29 3513 11.22 920 861 236.3
A 7 110 2995 9.03 920 861 236.3
A 0 30 2695 7.76 920 861 236.3
B 2 9 3004 11.71 909 867 182.4
B 12 226 2546 9.2 909 867 182.4
B 5 128 2320 7.97 909 867 182.4
C 1 80 2660 7.27 934 866 246.8
C 1 81 2545 6.8 934 866 246.8
C 12 241 2421 6.3 934 866 246.8
D 11 82 2302 6.84 846 770 224.0
D 3 14 2274 6.71 846 770 224.0
D 6 231 2250 6.61 846 770 224.0

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