ASTROSAT CZTI

Data Quality Report

Orbit 24699

Creation date: 2024-06-27T19:08:54.816771
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_191T01_9000003618_24699cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24699cztM0_level2_quad_clean.evt
Size (bytes)559,615,680143,861,760
Size533.7 MB 137.2 MB
Events in quadrant A3,547,343984,599
Events in quadrant B4,085,805985,811
Events in quadrant C3,953,140938,675
Events in quadrant D4,841,362914,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157432
B0171942
C0164042
D0195082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7669750.977963%
B76691922.503586%
C7669971.264832%
D76692743.572826%

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 7959 7669 0 0 0.00% 0.00%
B 7959 7669 68 68 0.85% 0.89%
C 7959 7670 0 0 0.00% 0.00%
D 7959 7670 225 225 2.83% 2.93%

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 13 254 13084 65.77 917 895 185.3
A 10 255 9530 46.59 917 895 185.3
A 3 137 8478 40.91 917 895 185.3
B 4 80 325065 1895.82 905 884 171.0
B 3 64 124869 725.07 905 884 171.0
B 0 189 44269 253.72 905 884 171.0
C 7 247 393546 1934.74 866 870 203.0
C 14 238 139415 682.62 866 870 203.0
C 3 233 18446 86.6 866 870 203.0
D 1 52 836077 3975.08 869 843 210.1
D 8 195 538721 2559.89 869 843 210.1
D 7 238 113430 535.83 869 843 210.1

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