ASTROSAT CZTI

Data Quality Report

Orbit 31833

Creation date: 2024-06-27T20:33:18.131242
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_109T01_9000004646_31833cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31833cztM0_level2_quad_clean.evt
Size (bytes)544,032,000103,438,080
Size518.8 MB 98.6 MB
Events in quadrant A3,166,514697,681
Events in quadrant B4,843,569690,811
Events in quadrant C4,338,254659,410
Events in quadrant D3,706,393650,338

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131351
B0188773
C0171201
D0151081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226390.626405%
B6226861.381304%
C62262303.694186%
D62261031.654353%

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 7291 6227 0 0 0.00% 0.00%
B 7291 6227 2 2 0.03% 0.03%
C 7291 6227 32 32 0.44% 0.51%
D 7291 6227 55 55 0.75% 0.88%

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 13 254 11757 66.99 819 807 163.5
A 3 137 7892 43.34 819 807 163.5
A 0 226 6917 37.38 819 807 163.5
B 6 159 1656421 10870.3 802 783 152.3
B 12 111 17823 111.88 802 783 152.3
B 11 111 16909 105.88 802 783 152.3
C 10 22 697539 3821.06 784 793 182.3
C 0 10 203346 1110.83 784 793 182.3
C 3 233 192097 1049.14 784 793 182.3
D 8 195 372447 1997.58 793 774 186.1
D 2 250 162505 869.23 793 774 186.1
D 12 218 61314 325.38 793 774 186.1

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