ASTROSAT CZTI

Data Quality Report

Orbit 17936

Creation date: 2024-06-27T17:42:49.878878
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/AS1T03_025T01_9000002670_17936cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17936cztM0_level2_quad_clean.evt
Size (bytes)460,808,640105,863,040
Size439.5 MB 101.0 MB
Events in quadrant A3,143,039685,048
Events in quadrant B3,365,948708,723
Events in quadrant C3,269,822681,041
Events in quadrant D3,715,188657,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141292
B0146632
C0141142
D0159192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6798240.353045%
B6798721.059135%
C6799951.397264%
D67991121.647301%

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 9173 6800 0 0 0.00% 0.00%
B 9173 6800 8 8 0.09% 0.12%
C 9174 6801 0 0 0.00% 0.00%
D 9174 6801 126 126 1.37% 1.85%

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 15 174 39782 242.22 805 786 161.0
A 4 2 7928 44.36 805 786 161.0
A 0 226 6897 37.96 805 786 161.0
B 0 197 100172 650.31 818 797 152.8
B 12 111 18109 113.29 818 797 152.8
B 4 48 17347 108.3 818 797 152.8
C 14 238 122638 665.42 789 793 183.1
C 5 218 34572 184.47 789 793 183.1
C 3 233 33165 176.79 789 793 183.1
D 7 223 495555 2613.37 790 768 189.3
D 10 70 63675 332.26 790 768 189.3
D 9 64 46652 242.35 790 768 189.3

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