ASTROSAT CZTI

Data Quality Report

Orbit 13243

Creation date: 2024-06-27T16:38:17.543459
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/AS1G08_077T01_9000001970_13243cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13243cztM0_level2_quad_clean.evt
Size (bytes)512,778,240111,035,520
Size489.0 MB 105.9 MB
Events in quadrant A3,273,938738,600
Events in quadrant B5,762,417688,232
Events in quadrant C3,090,254777,686
Events in quadrant D2,986,751730,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138813
B0213132
C0132712
D0130992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136420.684485%
B6136122019.882660%
C6136350.570404%
D6136280.456323%

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 7487 6138 1 1 0.01% 0.02%
B 7487 6138 725 725 9.68% 11.81%
C 7487 6138 5 5 0.07% 0.08%
D 7487 6138 1 1 0.01% 0.02%

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 12 189 157377 1019.31 767 754 153.7
A 15 239 128041 828.39 767 754 153.7
A 1 162 18268 113.98 767 754 153.7
B 4 239 2967647 23337.33 695 680 127.1
B 0 230 18015 136.35 695 680 127.1
B 3 64 17583 132.95 695 680 127.1
C 15 208 48341 271.42 775 780 175.2
C 8 128 10507 55.51 775 780 175.2
C 13 61 5597 27.49 775 780 175.2
D 10 157 68753 377.56 760 738 180.1
D 2 234 25663 138.36 760 738 180.1
D 8 195 12997 68.05 760 738 180.1

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