ASTROSAT CZTI

Data Quality Report

Orbit 45492

Creation date: 2024-06-27T23:12:51.672870
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_054T01_9000006098_45492cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45492cztM0_level2_quad_clean.evt
Size (bytes)563,857,920117,446,400
Size537.7 MB 112.0 MB
Events in quadrant A6,145,236778,242
Events in quadrant B3,810,330821,084
Events in quadrant C3,655,780782,781
Events in quadrant D6,690,182661,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237162
B0164822
C0162532
D0249792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73582663.615113%
B73582273.085077%
C73581562.120141%
D735878210.627888%

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 7708 7359 15 15 0.19% 0.20%
B 7708 7359 87 87 1.13% 1.18%
C 7708 7359 84 84 1.09% 1.14%
D 7708 7359 608 608 7.89% 8.26%

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 2878614 16613.84 834 815 173.2
A 13 248 22752 126.64 834 815 173.2
A 3 137 9789 51.81 834 815 173.2
B 15 201 316510 1861.55 843 816 169.6
B 5 172 46015 266.52 843 816 169.6
B 0 186 39194 226.3 843 816 169.6
C 14 254 431623 2208.73 821 828 195.0
C 3 233 10208 48.09 821 828 195.0
C 12 2 7677 35.12 821 828 195.0
D 1 52 2038747 10103.43 790 764 201.7
D 5 222 820254 4062.67 790 764 201.7
D 11 241 386180 1910.72 790 764 201.7

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