ASTROSAT CZTI

Data Quality Report

Orbit 17277

Creation date: 2024-06-27T17:34:24.622115
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/AS1T03_059T01_9000002554_17277cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17277cztM0_level2_quad_clean.evt
Size (bytes)551,324,16089,809,920
Size525.8 MB 85.6 MB
Events in quadrant A4,543,052552,652
Events in quadrant B3,559,703569,448
Events in quadrant C3,553,631543,689
Events in quadrant D4,537,603538,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183392
B0153513
C0153862
D0185892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74113114.196465%
B74101061.430499%
C74111301.754149%
D74112933.953583%

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 9146 7413 196 196 2.14% 2.64%
B 9145 7411 0 0 0.00% 0.00%
C 9146 7413 0 0 0.00% 0.00%
D 9146 7413 171 171 1.87% 2.31%

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 14 235 1077874 5904.96 901 882 182.4
A 0 226 7915 38.56 901 882 182.4
A 3 137 6868 32.82 901 882 182.4
B 12 111 21503 117.25 906 882 175.9
B 11 111 18913 102.52 906 882 175.9
B 14 111 16781 90.4 906 882 175.9
C 14 238 132620 641.42 873 877 205.4
C 3 233 14895 68.25 873 877 205.4
C 13 61 5980 24.85 873 877 205.4
D 11 176 691887 3232.17 877 849 213.8
D 2 136 269179 1255.05 877 849 213.8
D 5 222 126937 589.75 877 849 213.8

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