ASTROSAT CZTI

Data Quality Report

Orbit 37350

Creation date: 2024-06-27T21:38:51.612179
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/AS1C07_014T01_9000005314_37350cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37350cztM0_level2_quad_clean.evt
Size (bytes)723,980,16062,976,960
Size690.4 MB 60.1 MB
Events in quadrant A3,143,547420,986
Events in quadrant B3,218,382422,198
Events in quadrant C4,485,839413,906
Events in quadrant D10,703,119260,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125713
B0129482
C0168902
D0354982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5555721.296130%
B55551472.646265%
C55552404.320432%
D5555305254.941494%

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 7348 5556 61 61 0.83% 1.10%
B 7348 5556 111 111 1.51% 2.00%
C 7348 5556 212 212 2.89% 3.82%
D 7348 5556 2866 2866 39.00% 51.58%

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 10 83 293456 2212.92 651 638 132.3
A 15 237 277699 2093.84 651 638 132.3
A 13 248 20613 150.96 651 638 132.3
B 5 172 390975 3162.56 642 627 123.4
B 0 190 162374 1310.46 642 627 123.4
B 5 255 97324 783.43 642 627 123.4
C 14 254 898968 6205.37 622 628 144.8
C 1 23 841619 5809.22 622 628 144.8
C 15 214 233629 1609.48 622 628 144.8
D 12 227 7359149 67065.65 435 421 109.7
D 12 235 1209871 11022.63 435 421 109.7
D 2 249 218860 1990.8 435 421 109.7

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