ASTROSAT CZTI

Data Quality Report

Orbit 19010

Creation date: 2024-06-27T17:58:03.508418
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/AS1A06_003T05_9000002830_19010cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_19010cztM0_level2_quad_clean.evt
Size (bytes)618,266,88092,171,520
Size589.6 MB 87.9 MB
Events in quadrant A4,806,784567,944
Events in quadrant B4,943,477574,133
Events in quadrant C3,927,409557,520
Events in quadrant D4,512,385543,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194686
B0196181
C0164681
D0186435

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78805967.563452%
B78834535.746543%
C78832683.399721%
D78822923.704643%

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 7927 7884 209 209 2.64% 2.65%
B 7928 7885 147 147 1.85% 1.86%
C 7928 7885 1 1 0.01% 0.01%
D 7928 7885 83 83 1.05% 1.05%

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 14 235 1103287 5690.1 955 933 193.7
A 9 143 23526 116.62 955 933 193.7
A 0 226 8270 37.87 955 933 193.7
B 3 112 885781 4712.31 961 933 187.8
B 7 220 136501 721.98 961 933 187.8
B 10 245 68509 359.88 961 933 187.8
C 14 238 145052 657.91 930 934 219.1
C 3 233 126554 573.47 930 934 219.1
C 0 207 10497 43.66 930 934 219.1
D 7 238 693270 2951.44 947 915 234.6
D 7 38 122608 518.76 947 915 234.6
D 1 52 53948 226.07 947 915 234.6

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