ASTROSAT CZTI

Data Quality Report

Orbit 18975

Creation date: 2024-06-27T17:57:21.261143
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_166T04_9000002826_18975cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18975cztM0_level2_quad_clean.evt
Size (bytes)599,964,480104,685,120
Size572.2 MB 99.8 MB
Events in quadrant A3,352,856687,183
Events in quadrant B5,351,339699,634
Events in quadrant C3,528,548680,739
Events in quadrant D5,495,384647,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138322
B0201472
C0143422
D0206562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529250.382907%
B652967210.292541%
C6529650.995558%
D65285338.164828%

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 7859 6530 0 0 0.00% 0.00%
B 7859 6530 400 400 5.09% 6.13%
C 7859 6530 3 3 0.04% 0.05%
D 7858 6529 365 365 4.64% 5.59%

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 0 226 7649 39.42 869 855 172.4
A 13 254 7413 38.05 869 855 172.4
A 12 194 6188 30.94 869 855 172.4
B 3 112 1977947 12687.37 837 819 155.8
B 7 220 59666 377.63 837 819 155.8
B 12 111 17951 109.94 837 819 155.8
C 14 238 133735 667.39 847 852 199.1
C 0 207 76105 377.95 847 852 199.1
C 3 233 18267 87.46 847 852 199.1
D 7 238 1838671 9254.58 829 809 198.6
D 1 52 515481 2591.64 829 809 198.6
D 2 234 26780 130.77 829 809 198.6

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