ASTROSAT CZTI

Data Quality Report

Orbit 51454

Creation date: 2025-04-03T04:06:54.250959
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/AS1A13_090T01_9000006458_51454cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51454cztM0_level2_quad_clean.evt
Size (bytes)691,056,00093,669,120
Size659.0 MB 89.3 MB
Events in quadrant A7,379,556585,855
Events in quadrant B4,444,001691,398
Events in quadrant C8,062,443509,422
Events in quadrant D5,155,925564,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267942
B0180862
C0288592
D0202582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A695699814.347326%
B69563895.592294%
C6956165123.734905%
D69564426.354227%

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 7741 6958 722 722 9.33% 10.38%
B 7741 6958 175 175 2.26% 2.52%
C 7741 6958 1642 1642 21.21% 23.60%
D 7741 6958 365 365 4.72% 5.25%

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 7 64 2091609 12052.65 704 686 173.5
A 12 3 1460926 8417.22 704 686 173.5
A 15 174 212165 1219.02 704 686 173.5
B 5 185 754817 4822.29 736 712 156.4
B 4 81 173686 1106.12 736 712 156.4
B 4 206 96674 613.65 736 712 156.4
C 4 12 3442379 18939.83 656 649 181.7
C 15 179 1540892 8475.95 656 649 181.7
C 13 3 186916 1025.03 656 649 181.7
D 11 176 750109 3769.7 705 677 198.8
D 8 176 749918 3768.74 705 677 198.8
D 3 12 333124 1672.24 705 677 198.8

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