ASTROSAT CZTI

Data Quality Report

Orbit 00884

Creation date: 2024-06-27T14:04:15.872212
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/AS1P01_889T01_9000000162_00884cztM0_level2.evt modeM0/AS1P01_889T01_9000000162_00884cztM0_level2_quad_clean.evt
Size (bytes)350,118,72032,708,160
Size333.9 MB 31.2 MB
Events in quadrant A2,343,526216,655
Events in quadrant B3,626,098197,103
Events in quadrant C2,047,351217,544
Events in quadrant D2,447,799209,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084050
B0122660
C075380
D087330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204710.048852%
B204634216.715543%
C204700.000000%
D2046150.733138%

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 2047 2047 32 32 1.56% 1.56%
B 2047 2047 634 634 30.97% 30.97%
C 2047 2047 2 2 0.10% 0.10%
D 2047 2047 133 133 6.50% 6.50%

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 14 170 140198 1002.85 573 581 139.2
A 14 79 2992 17.32 573 581 139.2
A 11 79 1923 9.64 573 581 139.2
B 3 0 1197260 9004.71 560 564 132.9
B 8 38 212612 1595.59 560 564 132.9
B 0 220 54616 406.72 560 564 132.9
C 3 111 7078 45.36 517 535 144.2
C 15 241 6931 44.34 517 535 144.2
C 3 79 4651 28.53 517 535 144.2
D 13 170 432789 2758.54 504 520 156.7
D 1 4 78354 496.7 504 520 156.7
D 13 72 14193 87.25 504 520 156.7

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