ASTROSAT CZTI

Data Quality Report

Orbit 01387

Creation date: 2024-06-27T14:11:55.047825
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/AS1G04_014T02_9000000232_01387cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01387cztM0_level2_quad_clean.evt
Size (bytes)1,172,802,24090,757,440
Size1.1 GB 86.6 MB
Events in quadrant A12,482,216524,260
Events in quadrant B8,016,904613,603
Events in quadrant C7,076,183607,899
Events in quadrant D7,546,224582,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415502
B0280691
C0252451
D0267561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011162927.100316%
B60111011.680253%
C6011180.299451%
D60112564.258859%

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 7156 6011 2878 2878 40.22% 47.88%
B 7156 6012 538 538 7.52% 8.95%
C 7156 6011 156 156 2.18% 2.60%
D 7156 6011 563 563 7.87% 9.37%

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 15 127 6196288 16087.32 1612 1622 385.1
A 3 80 89564 228.38 1612 1622 385.1
A 4 32 6967 13.88 1612 1622 385.1
B 8 4 662947 1496.25 1889 1898 441.8
B 15 22 74496 164.32 1889 1898 441.8
B 5 249 46701 101.41 1889 1898 441.8
C 15 241 135397 273.98 1757 1822 487.5
C 12 4 30501 58.83 1757 1822 487.5
C 3 111 21336 40.03 1757 1822 487.5
D 13 73 925496 1812.39 1657 1717 509.7
D 2 16 204657 398.15 1657 1717 509.7
D 9 53 76926 147.55 1657 1717 509.7

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