ASTROSAT CZTI

Data Quality Report

Orbit 16669

Creation date: 2024-06-27T17:25:55.643425
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_078T01_9000002462_16669cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16669cztM0_level2_quad_clean.evt
Size (bytes)520,453,440117,184,320
Size496.3 MB 111.8 MB
Events in quadrant A4,504,361761,682
Events in quadrant B3,420,344803,669
Events in quadrant C3,048,239779,630
Events in quadrant D4,350,056752,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177892
B0141631
C0132701
D0171561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64764757.334775%
B6476831.281655%
C6476831.281655%
D64761322.038295%

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 7262 6478 334 334 4.60% 5.16%
B 7262 6478 15 15 0.21% 0.23%
C 7262 6478 0 0 0.00% 0.00%
D 7262 6478 64 64 0.88% 0.99%

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 1635680 10919.3 737 720 149.7
A 9 143 33274 217.42 737 720 149.7
A 0 226 6476 38.44 737 720 149.7
B 15 35 149409 1016.92 757 736 146.2
B 0 189 148172 1008.46 757 736 146.2
B 0 229 114628 779.02 757 736 146.2
C 14 238 113548 657.19 733 736 171.7
C 7 247 57770 332.25 733 736 171.7
C 3 233 21733 122.32 733 736 171.7
D 1 52 1288420 7226.42 736 713 178.2
D 10 70 115911 646.47 736 713 178.2
D 5 222 60727 336.79 736 713 178.2

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