ASTROSAT CZTI

Data Quality Report

Orbit 18560

Creation date: 2024-06-27T17:51:35.488213
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/AS1A05_188T01_9000002756_18560cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18560cztM0_level2_quad_clean.evt
Size (bytes)535,766,400101,278,080
Size510.9 MB 96.6 MB
Events in quadrant A3,692,911647,272
Events in quadrant B3,581,579671,717
Events in quadrant C3,632,210628,289
Events in quadrant D4,818,443606,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159692
B0155252
C0156402
D0195102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73731391.885257%
B73721111.505697%
C73731431.939509%
D73732423.282246%

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 8393 7375 62 62 0.74% 0.84%
B 8392 7373 9 9 0.11% 0.12%
C 8393 7375 4 4 0.05% 0.05%
D 8393 7375 139 139 1.66% 1.88%

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 0 13 169279 952.07 875 854 176.9
A 14 111 151623 852.26 875 854 176.9
A 13 254 12085 63.49 875 854 176.9
B 7 220 76922 442.05 884 860 172.1
B 3 64 28516 160.73 884 860 172.1
B 12 111 20444 113.82 884 860 172.1
C 9 54 181006 911.68 839 845 197.6
C 14 238 131937 663.37 839 845 197.6
C 3 233 25021 122.34 839 845 197.6
D 7 238 1391834 6743.74 841 813 206.3
D 1 52 170502 822.66 841 813 206.3
D 7 38 50233 239.59 841 813 206.3

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