ASTROSAT CZTI

Data Quality Report

Orbit 20369

Creation date: 2024-06-27T18:14:31.605774
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_205T01_9000003012_20369cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20369cztM0_level2_quad_clean.evt
Size (bytes)539,331,84088,922,880
Size514.3 MB 84.8 MB
Events in quadrant A3,649,173552,623
Events in quadrant B3,983,725554,806
Events in quadrant C3,708,413537,164
Events in quadrant D4,481,967524,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157712
B0165332
C0157082
D0184372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75201532.034574%
B75212503.324026%
C75202303.058511%
D75202032.699468%

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 8880 7522 2 2 0.02% 0.03%
B 8881 7523 42 42 0.47% 0.56%
C 8880 7522 0 0 0.00% 0.00%
D 8880 7522 65 65 0.73% 0.86%

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 12 96 42739 221.71 936 916 188.6
A 0 226 8140 38.3 936 916 188.6
A 3 137 7677 35.84 936 916 188.6
B 10 247 114258 627.69 934 911 180.6
B 7 220 66095 360.98 934 911 180.6
B 0 197 65986 360.37 934 911 180.6
C 14 238 139527 650.69 904 909 213.0
C 10 91 34114 155.87 904 909 213.0
C 3 233 8297 34.68 904 909 213.0
D 1 52 985592 4374.22 912 883 225.1
D 2 234 34411 148.94 912 883 225.1
D 2 120 24612 105.41 912 883 225.1

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