ASTROSAT CZTI

Data Quality Report

Orbit 06740

Creation date: 2024-06-27T15:11:02.521311
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/AS1G06_066T01_9000000928_06740cztM0_level2.evt modeM0/AS1G06_066T01_9000000928_06740cztM0_level2_quad_clean.evt
Size (bytes)481,896,00082,512,000
Size459.6 MB 78.7 MB
Events in quadrant A3,400,663522,538
Events in quadrant B3,139,342533,131
Events in quadrant C2,889,126520,608
Events in quadrant D4,739,812484,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142211
B0133850
C0128650
D0181570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62771562.485264%
B62771001.593118%
C6277560.892146%
D62773034.827147%

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 7287 6278 35 35 0.48% 0.56%
B 7287 6278 20 20 0.27% 0.32%
C 7287 6278 0 0 0.00% 0.00%
D 7287 6278 265 265 3.64% 4.22%

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 14 111 465866 3079.49 742 725 151.0
A 8 15 32674 211.52 742 725 151.0
A 15 236 17670 112.19 742 725 151.0
B 3 220 63994 440.26 745 727 143.7
B 0 214 50389 345.58 745 727 143.7
B 4 48 44050 301.47 745 727 143.7
C 9 16 69282 410.33 715 718 167.1
C 9 247 17381 99.72 715 718 167.1
C 12 4 6187 32.73 715 718 167.1
D 2 33 600297 3423.93 712 691 175.1
D 7 203 407871 2325.12 712 691 175.1
D 8 195 356530 2031.95 712 691 175.1

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