ASTROSAT CZTI

Data Quality Report

Orbit 10687

Creation date: 2024-06-27T16:02:28.898915
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/AS1A03_097T01_9000001540_10687cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10687cztM0_level2_quad_clean.evt
Size (bytes)728,769,600100,863,360
Size695.0 MB 96.2 MB
Events in quadrant A4,729,416633,445
Events in quadrant B5,764,949630,642
Events in quadrant C4,015,581646,686
Events in quadrant D6,984,778552,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201122
B0227061
C0179521
D0265101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85043514.127469%
B850487810.324553%
C85042042.398871%
D8504107912.688147%

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 8624 8505 1 1 0.01% 0.01%
B 8624 8505 279 279 3.24% 3.28%
C 8624 8505 0 0 0.00% 0.00%
D 8624 8505 739 739 8.57% 8.69%

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 15 239 629462 2950.58 1036 1009 213.0
A 14 254 56988 262.82 1036 1009 213.0
A 15 174 22923 102.89 1036 1009 213.0
B 4 239 1072379 5410.79 1020 993 198.0
B 0 85 474999 2393.86 1020 993 198.0
B 4 81 71089 354.0 1020 993 198.0
C 13 61 7679 27.79 1023 1028 239.3
C 14 234 6589 23.24 1023 1028 239.3
C 8 222 5620 19.19 1023 1028 239.3
D 10 199 1950687 8470.89 956 927 230.2
D 2 16 500261 2169.4 956 927 230.2
D 8 195 424989 1842.37 956 927 230.2

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