ASTROSAT CZTI

Data Quality Report

Orbit 30001

Creation date: 2024-06-27T20:09:44.102519
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_071T01_9000004310_30001cztM0_level2.evt modeM0/AS1A10_071T01_9000004310_30001cztM0_level2_quad_clean.evt
Size (bytes)731,309,76095,797,440
Size697.4 MB 91.4 MB
Events in quadrant A3,387,389634,918
Events in quadrant B10,932,201557,337
Events in quadrant C3,579,894612,194
Events in quadrant D3,767,047600,257

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146622
B0374372
C0151352
D0158682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7118560.786738%
B7118236333.197527%
C71181381.938747%
D71191311.840146%

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 8708 7120 2 2 0.02% 0.03%
B 8708 7120 1416 1416 16.26% 19.89%
C 8708 7120 0 0 0.00% 0.00%
D 8709 7121 80 80 0.92% 1.12%

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 8 192 26605 146.32 869 852 176.0
A 13 254 12349 65.32 869 852 176.0
A 3 137 8880 45.61 869 852 176.0
B 6 36 5908781 38176.53 791 768 154.8
B 6 159 1904152 12299.33 791 768 154.8
B 12 111 19313 119.83 791 768 154.8
C 14 238 167838 852.74 831 837 195.8
C 3 233 109947 557.14 831 837 195.8
C 14 254 49773 249.88 831 837 195.8
D 7 80 340470 1669.52 827 808 203.4
D 8 195 188332 921.72 827 808 203.4
D 2 250 30663 146.74 827 808 203.4

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