ASTROSAT CZTI

Data Quality Report

Orbit 45927

Creation date: 2024-06-27T23:17:48.702861
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_071T03_9000006142_45927cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45927cztM0_level2_quad_clean.evt
Size (bytes)644,428,800123,408,000
Size614.6 MB 117.7 MB
Events in quadrant A6,831,327811,269
Events in quadrant B7,319,830791,849
Events in quadrant C3,846,334832,374
Events in quadrant D5,239,941747,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253400
B0271360
C0173580
D0208420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79683854.831827%
B796998312.335299%
C79691952.446982%
D79693053.827331%

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 7968 7968 3 3 0.04% 0.04%
B 7969 7969 470 470 5.90% 5.90%
C 7969 7969 46 46 0.58% 0.58%
D 7969 7969 95 95 1.19% 1.19%

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 3243197 17479.81 888 866 185.5
A 14 235 82071 437.79 888 866 185.5
A 0 247 49412 261.72 888 866 185.5
B 3 112 3396314 19859.61 864 833 171.0
B 10 246 360588 2104.15 864 833 171.0
B 5 172 47911 275.35 864 833 171.0
C 14 254 357227 1703.62 888 890 209.2
C 12 249 14863 66.8 888 890 209.2
C 12 2 6893 28.7 888 890 209.2
D 11 241 1032765 4639.08 885 855 222.4
D 5 171 237203 1062.53 885 855 222.4
D 2 37 159035 711.12 885 855 222.4

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