ASTROSAT CZTI

Data Quality Report

Orbit 21622

Creation date: 2024-06-27T18:30:18.833134
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_094T01_9000003204_21622cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21622cztM0_level2_quad_clean.evt
Size (bytes)489,991,68091,488,960
Size467.3 MB 87.3 MB
Events in quadrant A3,581,974581,625
Events in quadrant B3,470,171588,697
Events in quadrant C3,330,822577,131
Events in quadrant D4,008,931563,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150572
B0146902
C0142932
D0164422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65901522.306525%
B6591701.062054%
C65901091.654021%
D65902704.097117%

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 8750 6592 40 40 0.46% 0.61%
B 8751 6593 3 3 0.03% 0.05%
C 8750 6592 0 0 0.00% 0.00%
D 8750 6592 166 166 1.90% 2.52%

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 5 16 345130 2045.32 837 818 168.3
A 13 254 9589 52.1 837 818 168.3
A 0 226 7301 38.51 837 818 168.3
B 0 230 51223 315.44 843 823 159.8
B 3 64 33223 202.78 843 823 159.8
B 0 197 29452 179.18 843 823 159.8
C 14 238 128947 672.82 817 824 190.4
C 9 54 10581 51.24 817 824 190.4
C 13 61 5760 25.92 817 824 190.4
D 1 52 555493 2811.87 812 791 197.3
D 7 238 170535 860.46 812 791 197.3
D 2 136 74624 374.27 812 791 197.3

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