ASTROSAT CZTI

Data Quality Report

Orbit 17812

Creation date: 2024-06-27T17:41:12.300421
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/AS1A05_015T01_9000002650_17812cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17812cztM0_level2_quad_clean.evt
Size (bytes)460,889,28069,428,160
Size439.5 MB 66.2 MB
Events in quadrant A3,252,163411,419
Events in quadrant B3,446,379416,114
Events in quadrant C3,253,254399,589
Events in quadrant D3,542,063399,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141393
B0146382
C0140162
D0151602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6825771.128205%
B68251011.479853%
C68251051.538462%
D68251201.758242%

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 7665 6825 1 1 0.01% 0.01%
B 7665 6825 17 17 0.22% 0.25%
C 7665 6825 0 0 0.00% 0.00%
D 7665 6825 38 38 0.50% 0.56%

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 15 174 37125 213.94 834 816 169.7
A 0 226 7431 38.98 834 816 169.7
A 3 137 6190 31.66 834 816 169.7
B 10 245 111250 680.71 831 809 162.2
B 7 220 49189 298.19 831 809 162.2
B 12 111 18913 111.58 831 809 162.2
C 14 238 123337 649.79 800 803 188.6
C 3 233 6736 31.46 800 803 188.6
C 13 61 5614 25.51 800 803 188.6
D 7 238 189372 960.54 810 790 196.3
D 1 52 124529 630.27 810 790 196.3
D 10 70 86561 436.88 810 790 196.3

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