ASTROSAT CZTI

Data Quality Report

Orbit 28805

Creation date: 2024-06-27T19:56:35.282378
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/AS1A10_121T01_9000004134_28805cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28805cztM0_level2_quad_clean.evt
Size (bytes)614,033,280103,440,960
Size585.6 MB 98.6 MB
Events in quadrant A2,988,404707,661
Events in quadrant B3,572,747730,996
Events in quadrant C6,303,350632,619
Events in quadrant D5,340,632657,411

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122321
B0141171
C0227881
D0198931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5771270.467857%
B57722203.811504%
C5772160127.737353%
D57725279.130284%

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 7121 5771 1 1 0.01% 0.02%
B 7122 5772 89 89 1.25% 1.54%
C 7122 5772 946 946 13.28% 16.39%
D 7122 5772 471 471 6.61% 8.16%

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 1 113 18189 114.67 761 748 152.1
A 14 235 17127 107.68 761 748 152.1
A 15 174 11377 69.88 761 748 152.1
B 5 172 428937 3110.54 759 742 137.7
B 0 229 37776 269.03 759 742 137.7
B 0 245 34191 242.98 759 742 137.7
C 4 254 3330985 21833.87 662 668 152.5
C 3 233 199000 1300.28 662 668 152.5
C 14 238 130702 852.52 662 668 152.5
D 1 52 1698722 9756.2 736 718 174.0
D 8 195 400996 2299.87 736 718 174.0
D 12 233 226403 1296.72 736 718 174.0

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