ASTROSAT CZTI

Data Quality Report

Orbit 31941

Creation date: 2024-06-27T20:34:25.497757
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/AS1C06_002T04_9000004660_31941cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31941cztM0_level2_quad_clean.evt
Size (bytes)561,078,72052,277,760
Size535.1 MB 49.9 MB
Events in quadrant A2,219,941335,257
Events in quadrant B4,133,564324,973
Events in quadrant C7,022,563265,940
Events in quadrant D3,283,237310,681

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010911
B011012
C01079
D011214

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110731109
B0179981807
C0269942683
D0146261695

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055
B011
C022
D011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492940.081152%
B49161653.356387%
C4913158632.281702%
D49231322.681292%

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 7314 4937 0 0 0.00% 0.00%
B 7308 4921 113 113 1.55% 2.30%
C 7315 4923 773 773 10.57% 15.70%
D 7311 4930 105 105 1.44% 2.13%

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 12 96 36885 322.05 564 552 112.8
A 13 254 8933 74.29 564 552 112.8
A 13 6 6475 52.5 564 552 112.8
B 6 159 1379614 13002.4 550 536 106.1
B 4 80 286365 2694.89 550 536 106.1
B 10 245 240837 2265.64 550 536 106.1
C 3 233 4961710 43288.39 490 493 114.6
C 14 238 92129 799.56 490 493 114.6
C 14 254 19899 169.32 490 493 114.6
D 8 195 714188 5541.07 534 519 128.8
D 13 249 211661 1639.35 534 519 128.8
D 7 238 106962 826.44 534 519 128.8

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