ASTROSAT CZTI

Data Quality Report

Orbit 02426

Creation date: 2024-06-27T14:17:35.317974
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/AS1T01_042T01_9000000366_02426cztM0_level2.evt modeM0/AS1T01_042T01_9000000366_02426cztM0_level2_quad_clean.evt
Size (bytes)547,744,32082,218,240
Size522.4 MB 78.4 MB
Events in quadrant A5,239,174498,110
Events in quadrant B3,372,233516,011
Events in quadrant C3,995,417504,338
Events in quadrant D3,506,544483,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203913
B0147262
C0163512
D0155032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70036138.753391%
B7003340.485506%
C7003580.828216%
D70031201.713551%

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 8593 7005 404 404 4.70% 5.77%
B 8593 7005 1 1 0.01% 0.01%
C 8593 7005 12 12 0.14% 0.17%
D 8593 7004 74 74 0.86% 1.06%

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 8 14 2016769 12535.85 781 763 160.8
A 8 15 104272 643.63 781 763 160.8
A 15 31 73577 452.77 781 763 160.8
B 6 36 55411 343.39 825 804 159.0
B 4 200 47499 293.64 825 804 159.0
B 0 182 25671 156.38 825 804 159.0
C 5 234 887323 4738.28 790 793 187.1
C 1 3 8454 40.95 790 793 187.1
C 13 61 7025 33.31 790 793 187.1
D 7 67 128237 683.97 773 755 186.4
D 13 53 120746 643.78 773 755 186.4
D 13 169 81897 435.35 773 755 186.4

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