ASTROSAT CZTI

Data Quality Report

Orbit 43758

Creation date: 2024-06-27T22:55:25.167227
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/AS1A13_026T01_9000005904_43758cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43758cztM0_level2_quad_clean.evt
Size (bytes)1,568,741,760277,600,320
Size1.5 GB 264.7 MB
Events in quadrant A13,579,5091,887,728
Events in quadrant B11,424,5101,946,431
Events in quadrant C11,669,2861,893,060
Events in quadrant D19,977,3681,409,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526893
B0462853
C0474323
D0720294

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183806763.677911%
B183808194.455930%
C183806023.275299%
D18379370820.175200%

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 20075 18384 349 349 1.74% 1.90%
B 20075 18384 377 377 1.88% 2.05%
C 20075 18384 421 421 2.10% 2.29%
D 20074 18382 2650 2650 13.20% 14.42%

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 2471373 5800.95 2054 2009 425.7
A 14 63 1698786 3986.01 2054 2009 425.7
A 13 248 826240 1936.26 2054 2009 425.7
B 0 200 1139113 2848.03 2046 1984 399.3
B 4 80 687659 1717.33 2046 1984 399.3
B 5 255 412408 1027.94 2046 1984 399.3
C 15 158 2287821 4792.13 2021 2029 477.0
C 15 174 649133 1356.64 2021 2029 477.0
C 14 254 352738 735.26 2021 2029 477.0
D 5 235 3321590 6925.29 1826 1763 479.4
D 4 212 1334262 2779.65 1826 1763 479.4
D 1 52 1157887 2411.72 1826 1763 479.4

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