ASTROSAT CZTI

Data Quality Report

Orbit 28250

Creation date: 2024-06-27T19:49:38.794786
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/AS1A10_067T01_9000004076_28250cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28250cztM0_level2_quad_clean.evt
Size (bytes)539,233,92087,180,480
Size514.3 MB 83.1 MB
Events in quadrant A3,355,817559,264
Events in quadrant B3,539,192558,281
Events in quadrant C3,590,676536,626
Events in quadrant D5,375,234503,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144400
B0150690
C0152410
D0207480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6917410.592743%
B6918921.329864%
C69181291.864701%
D69185958.600752%

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 8813 6919 0 0 0.00% 0.00%
B 8814 6919 14 14 0.16% 0.20%
C 8814 6919 0 0 0.00% 0.00%
D 8814 6919 514 514 5.83% 7.43%

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 13 254 11395 60.68 865 848 173.8
A 3 137 8548 44.3 865 848 173.8
A 0 226 7336 37.33 865 848 173.8
B 10 246 57088 339.66 855 831 165.6
B 4 200 45923 272.25 855 831 165.6
B 10 245 31387 184.48 855 831 165.6
C 3 233 173687 890.95 828 835 194.0
C 14 238 134713 690.06 828 835 194.0
C 1 90 40941 206.72 828 835 194.0
D 7 238 998729 5143.35 808 785 194.0
D 1 52 608448 3131.86 808 785 194.0
D 2 250 419424 2157.64 808 785 194.0

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