ASTROSAT CZTI

Data Quality Report

Orbit 17848

Creation date: 2024-06-27T17:41:38.295720
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_085T01_9000002658_17848cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17848cztM0_level2_quad_clean.evt
Size (bytes)458,717,76096,359,040
Size437.5 MB 91.9 MB
Events in quadrant A3,062,490629,322
Events in quadrant B3,237,679646,738
Events in quadrant C3,219,047615,872
Events in quadrant D3,936,995578,603

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132832
B0136583
C0133592
D0161522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419250.389469%
B6418410.638828%
C6418350.545341%
D64182513.910876%

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 7754 6420 0 0 0.00% 0.00%
B 7753 6419 1 1 0.01% 0.02%
C 7753 6419 0 0 0.00% 0.00%
D 7753 6419 230 230 2.97% 3.58%

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 0 226 6984 38.5 796 779 161.2
A 3 137 5852 31.48 796 779 161.2
A 12 194 5774 30.99 796 779 161.2
B 0 183 53719 349.4 807 787 151.5
B 12 111 17822 112.45 807 787 151.5
B 11 111 15228 95.32 807 787 151.5
C 14 238 120690 662.73 776 783 180.9
C 5 218 52094 283.6 776 783 180.9
C 5 219 11763 60.69 776 783 180.9
D 7 238 1047723 5811.22 754 736 180.2
D 2 234 25196 135.76 754 736 180.2
D 10 70 11729 61.01 754 736 180.2

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