ASTROSAT CZTI

Data Quality Report

Orbit 38061

Creation date: 2024-06-27T21:47:57.215087
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_044T01_9000005360_38061cztM0_level2.fits modeM0/AS1A11_044T01_9000005360_38061cztM0_level2_quad_clean.evt
Size (bytes)578,848,32093,588,480
Size552.0 MB 89.3 MB
Events in quadrant A3,386,465677,089
Events in quadrant B3,350,197688,977
Events in quadrant C3,621,209687,803
Events in quadrant D10,600,356358,326

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137723
B0138932
C0145782
D0356372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035380.629660%
B60351332.203811%
C6035370.613090%
D6035287047.555924%

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 7408 6036 18 18 0.24% 0.30%
B 7408 6036 93 93 1.26% 1.54%
C 7408 6036 18 18 0.24% 0.30%
D 7407 6034 2727 2727 36.82% 45.19%

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 10 83 407308 3014.88 672 658 134.9
A 12 16 184397 1362.23 672 658 134.9
A 7 3 69766 512.36 672 658 134.9
B 5 172 300018 2340.04 668 649 127.9
B 4 171 215737 1681.25 668 649 127.9
B 0 229 83034 643.97 668 649 127.9
C 3 233 611711 3941.68 665 670 155.0
C 15 214 254211 1635.53 665 670 155.0
C 1 23 126291 810.35 665 670 155.0
D 12 227 7728161 61506.11 514 498 125.6
D 13 249 193104 1532.99 514 498 125.6
D 12 233 184975 1468.29 514 498 125.6

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