ASTROSAT CZTI

Data Quality Report

Orbit 20231113_A13_025T01_9000005920_level2

Creation date: 2023-11-16T11:11:19.980426
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/AS1A13_025T01_9000005920cztM0_level2.fits modeM0/AS1A13_025T01_9000005920cztM0_level2_quad_clean.evt
Size (bytes)675,152,640631,612,800
Size643.9 MB 602.4 MB
Events in quadrant A3,920,9483,598,599
Events in quadrant B3,875,5723,643,029
Events in quadrant C4,002,4803,528,705
Events in quadrant D3,379,0563,093,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015560
B015560
C015560
D015560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02637160
B01787200
C01774700
D02102760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7676554137.051391%
B7676524853.237152%
C7676517472.275777%
D7676538124.965805%

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 86191 76751 0 0 0.00% 0.00%
B 86191 76745 0 0 0.00% 0.00%
C 86190 76744 0 0 0.00% 0.00%
D 86191 76732 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 7 110 3259 8.81 1024 959 261.1
A 0 29 3153 8.4 1024 959 261.1
A 7 109 3013 7.87 1024 959 261.1
B 2 9 3495 12.34 1027 973 204.3
B 3 17 2907 9.46 1027 973 204.3
B 2 8 2740 8.65 1027 973 204.3
C 1 81 3164 8.03 1059 984 271.5
C 3 202 3140 7.94 1059 984 271.5
C 1 80 3096 7.78 1059 984 271.5
D 6 38 2511 6.05 973 882 269.2
D 10 189 2481 5.94 973 882 269.2
D 3 14 2475 5.92 973 882 269.2

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