ASTROSAT CZTI

Data Quality Report

Orbit 29401

Creation date: 2024-06-27T20:03:35.367539
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_101T19_9000004228_29401cztM0_level2.evt modeM0/AS1A10_101T19_9000004228_29401cztM0_level2_quad_clean.evt
Size (bytes)712,010,88076,078,080
Size679.0 MB 72.6 MB
Events in quadrant A3,740,159466,717
Events in quadrant B3,658,894474,964
Events in quadrant C4,802,200458,252
Events in quadrant D8,897,165423,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151081
B0147841
C0190791
D0313581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68811271.845662%
B68821231.787271%
C68821822.644580%
D6882152722.188317%

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 7751 6882 4 4 0.05% 0.06%
B 7752 6883 8 8 0.10% 0.12%
C 7752 6883 0 0 0.00% 0.00%
D 7752 6883 1184 1184 15.27% 17.20%

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 134883 739.42 900 882 181.2
A 1 113 129862 711.71 900 882 181.2
A 13 254 14142 73.17 900 882 181.2
B 0 229 91282 528.77 885 865 171.0
B 10 245 44528 255.35 885 865 171.0
B 12 111 20867 116.97 885 865 171.0
C 3 233 1288698 6454.56 856 860 199.5
C 14 238 139299 693.85 856 860 199.5
C 4 222 18848 90.15 856 860 199.5
D 8 195 2772108 14108.62 815 793 196.4
D 12 33 1736277 8835.26 815 793 196.4
D 1 52 594729 3023.7 815 793 196.4

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