ASTROSAT CZTI

Data Quality Report

Orbit 43924

Creation date: 2024-06-27T22:57:15.576363
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_023T01_9000005916_43924cztM0_level2.fits modeM0/AS1A13_023T01_9000005916_43924cztM0_level2_quad_clean.evt
Size (bytes)429,238,080109,440,000
Size409.4 MB 104.4 MB
Events in quadrant A4,699,649734,785
Events in quadrant B3,485,595764,241
Events in quadrant C3,091,159733,791
Events in quadrant D4,129,563648,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188331
B0143051
C0130031
D0163361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62131652.655722%
B62142073.331188%
C6214711.142581%
D62143245.214033%

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 7388 6215 34 34 0.46% 0.55%
B 7389 6216 78 78 1.06% 1.25%
C 7389 6216 4 4 0.05% 0.06%
D 7389 6216 237 237 3.21% 3.81%

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 1023007 6743.46 741 727 151.6
A 15 222 348279 2292.62 741 727 151.6
A 15 223 222471 1462.73 741 727 151.6
B 5 172 267729 1850.15 741 720 144.3
B 0 213 119803 825.15 741 720 144.3
B 0 245 61729 422.74 741 720 144.3
C 10 22 108314 623.9 738 743 172.4
C 14 254 70527 404.74 738 743 172.4
C 3 233 17646 98.03 738 743 172.4
D 7 80 760365 4226.39 721 700 179.7
D 5 235 119630 661.67 721 700 179.7
D 1 52 100239 553.79 721 700 179.7

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