ASTROSAT CZTI

Data Quality Report

Orbit 33505

Creation date: 2024-06-27T20:49:33.989925
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/AS1A11_060T01_9000004804_33505cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33505cztM0_level2_quad_clean.evt
Size (bytes)483,952,32075,752,640
Size461.5 MB 72.2 MB
Events in quadrant A2,542,980494,098
Events in quadrant B3,649,657487,196
Events in quadrant C4,343,257466,379
Events in quadrant D3,744,535458,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112303
B0144882
C0166592
D0148922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555090.162162%
B55504067.315315%
C55501172.108108%
D5550470.846847%

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 7162 5551 1 1 0.01% 0.02%
B 7162 5550 300 300 4.19% 5.41%
C 7162 5551 117 117 1.63% 2.11%
D 7162 5551 49 49 0.68% 0.88%

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 13 254 9861 70.37 654 643 131.0
A 3 137 6679 46.08 654 643 131.0
A 13 6 6305 43.22 654 643 131.0
B 5 172 933344 7566.3 631 615 123.3
B 5 255 220472 1783.48 631 615 123.3
B 12 111 14929 116.12 631 615 123.3
C 10 49 1007839 6922.17 627 631 145.5
C 0 10 284632 1951.84 627 631 145.5
C 15 214 241118 1652.78 627 631 145.5
D 8 195 948268 6153.54 627 608 154.0
D 1 47 134421 868.9 627 608 154.0
D 13 249 92474 596.52 627 608 154.0

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