ASTROSAT CZTI

Data Quality Report

Orbit 06841

Creation date: 2024-06-27T15:12:15.731176
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/AS1A02_174T04_9000000938_06841cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06841cztM0_level2_quad_clean.evt
Size (bytes)423,866,88079,565,760
Size404.2 MB 75.9 MB
Events in quadrant A2,908,185494,102
Events in quadrant B3,000,097502,196
Events in quadrant C3,033,200495,120
Events in quadrant D3,463,039474,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128892
B0129901
C0132571
D0140944

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361460.723157%
B6361450.707436%
C6361380.597390%
D6360540.849057%

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 7358 6363 0 0 0.00% 0.00%
B 7358 6363 1 1 0.01% 0.02%
C 7358 6363 6 6 0.08% 0.09%
D 7357 6362 14 14 0.19% 0.22%

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 17167 107.47 744 727 153.0
A 8 15 16660 104.16 744 727 153.0
A 0 226 7156 42.03 744 727 153.0
B 0 219 42851 291.17 747 730 144.7
B 4 81 21248 141.83 747 730 144.7
B 12 111 14651 96.23 747 730 144.7
C 9 68 141425 840.97 720 723 167.3
C 10 22 61744 364.72 720 723 167.3
C 9 247 11524 64.56 720 723 167.3
D 8 195 407891 2288.41 722 699 177.9
D 2 216 116189 649.05 722 699 177.9
D 2 136 82486 459.64 722 699 177.9

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