ASTROSAT CZTI

Data Quality Report

Orbit 15326

Creation date: 2024-06-27T17:06:54.998066
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/AS1T02_073T01_9000002260_15326cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15326cztM0_level2_quad_clean.evt
Size (bytes)619,608,96086,990,400
Size590.9 MB 83.0 MB
Events in quadrant A3,138,296585,801
Events in quadrant B3,219,515589,917
Events in quadrant C3,288,583574,118
Events in quadrant D8,700,031452,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133222
B0135181
C0136481
D0298411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170741.199352%
B6170981.588331%
C6170651.053485%
D6170251540.761750%

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 7346 6171 0 0 0.00% 0.00%
B 7346 6171 9 9 0.12% 0.15%
C 7346 6171 1 1 0.01% 0.02%
D 7346 6171 2089 2089 28.44% 33.85%

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 4 2 11374 65.15 811 795 162.4
A 0 226 7239 39.68 811 795 162.4
A 15 239 6706 36.4 811 795 162.4
B 4 173 41946 270.81 801 782 152.0
B 4 48 25477 162.46 801 782 152.0
B 12 111 17787 111.87 801 782 152.0
C 3 233 212984 1180.53 787 792 179.7
C 13 61 5686 27.23 787 792 179.7
C 14 234 3645 15.87 787 792 179.7
D 13 122 6213775 40551.33 631 615 153.2
D 2 33 86768 562.29 631 615 153.2
D 2 234 18198 114.76 631 615 153.2

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