ASTROSAT CZTI

Data Quality Report

Orbit 08770

Creation date: 2024-06-27T15:36:58.424089
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/AS1G07_010T01_9000001220_08770cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08770cztM0_level2_quad_clean.evt
Size (bytes)522,763,200109,748,160
Size498.5 MB 104.7 MB
Events in quadrant A3,207,164740,955
Events in quadrant B3,176,181745,811
Events in quadrant C3,123,566734,062
Events in quadrant D5,904,276669,810

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134362
B0133461
C0131961
D0217981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6205881.418211%
B6205711.144239%
C6205731.176471%
D620580112.908944%

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 7490 6205 0 0 0.00% 0.00%
B 7490 6205 3 3 0.04% 0.05%
C 7490 6205 10 10 0.13% 0.16%
D 7490 6205 680 680 9.08% 10.96%

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 8 5 47937 291.81 806 790 161.6
A 13 251 18187 107.67 806 790 161.6
A 13 248 16894 99.67 806 790 161.6
B 10 16 42773 279.46 798 780 150.3
B 5 255 32176 208.94 798 780 150.3
B 12 111 15956 101.0 798 780 150.3
C 14 234 43825 237.39 786 790 181.3
C 9 68 13175 68.32 786 790 181.3
C 13 61 5856 27.95 786 790 181.3
D 2 16 2226714 12032.05 753 736 185.0
D 13 122 425716 2297.14 753 736 185.0
D 2 152 151945 817.33 753 736 185.0

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