ASTROSAT CZTI

Data Quality Report

Orbit 26694

Creation date: 2024-06-27T19:31:52.463924
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/AS1A09_145T01_9000003848_26694cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26694cztM0_level2_quad_clean.evt
Size (bytes)594,512,64076,939,200
Size567.0 MB 73.4 MB
Events in quadrant A3,535,043479,643
Events in quadrant B3,728,733484,602
Events in quadrant C3,538,048461,878
Events in quadrant D6,750,779438,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142460
B0149270
C0142600
D0243770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6671671.004347%
B66721111.663669%
C6672891.333933%
D6672131219.664269%

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 7601 6672 18 18 0.24% 0.27%
B 7602 6673 17 17 0.22% 0.25%
C 7602 6673 0 0 0.00% 0.00%
D 7602 6673 886 886 11.65% 13.28%

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 0 13 153192 862.52 876 861 176.6
A 13 254 11543 60.48 876 861 176.6
A 3 137 7860 39.63 876 861 176.6
B 15 33 123460 748.89 863 842 163.7
B 0 189 114453 693.88 863 842 163.7
B 10 251 43902 262.99 863 842 163.7
C 14 238 136009 692.81 832 840 195.1
C 3 233 90544 459.78 832 840 195.1
C 6 80 32297 161.23 832 840 195.1
D 7 80 2313896 11937.3 783 762 193.8
D 1 52 1392394 7181.74 783 762 193.8
D 2 250 42513 215.46 783 762 193.8

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