ASTROSAT CZTI

Data Quality Report

Orbit 51615

Creation date: 2025-04-15T11:23:20.785123
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_037T05_9000006460_51615cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51615cztM0_level2_quad_clean.evt
Size (bytes)600,621,120114,624,000
Size572.8 MB 109.3 MB
Events in quadrant A4,730,976752,497
Events in quadrant B4,850,203805,185
Events in quadrant C4,859,277721,913
Events in quadrant D7,170,924633,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197272
B0199081
C0203011
D0269341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80152102.620087%
B80163694.603293%
C80162953.680140%
D80167869.805389%

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 8615 8015 58 58 0.67% 0.72%
B 8616 8016 123 123 1.43% 1.53%
C 8616 8016 211 211 2.45% 2.63%
D 8616 8017 734 734 8.52% 9.16%

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 12 250 384537 1744.84 904 882 219.9
A 12 3 321895 1459.95 904 882 219.9
A 4 175 77151 346.87 904 882 219.9
B 1 223 309734 1602.82 894 862 192.7
B 0 171 172832 892.4 894 862 192.7
B 8 128 137551 709.32 894 862 192.7
C 13 3 407208 1714.62 868 859 237.0
C 0 209 405453 1707.21 868 859 237.0
C 15 148 182396 766.01 868 859 237.0
D 2 62 1012067 4378.61 843 815 231.0
D 1 3 523822 2264.56 843 815 231.0
D 12 6 485218 2097.41 843 815 231.0

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