ASTROSAT CZTI

Data Quality Report

Orbit 20240103_A13_077T01_9000006014_level2

Creation date: 2024-01-05T15:20:05.782678
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_077T01_9000006014cztM0_level2.fits modeM0/AS1A13_077T01_9000006014cztM0_level2_quad_clean.evt
Size (bytes)590,411,520575,614,080
Size563.1 MB 548.9 MB
Events in quadrant A3,372,6383,142,828
Events in quadrant B3,440,8443,486,025
Events in quadrant C3,598,5443,347,999
Events in quadrant D2,832,1582,827,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02468870
B01579750
C01399200
D02652860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013680
B013680
C013680
D013680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67472806911.959035%
B6747221423.174650%
C674726670.988558%
D674721077615.971069%

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 75268 66965 0 0 0.00% 0.00%
B 75268 67464 0 0 0.00% 0.00%
C 75268 67473 0 0 0.00% 0.00%
D 75268 67386 0 0 0.00% 0.00%

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 7 110 2786 8.67 877 817 227.2
A 15 236 2716 8.36 877 817 227.2
A 0 29 2703 8.3 877 817 227.2
B 2 9 3318 13.6 910 864 180.5
B 2 8 2632 9.8 910 864 180.5
B 3 17 2524 9.2 910 864 180.5
C 3 202 2805 7.83 951 880 245.7
C 3 203 2684 7.34 951 880 245.7
C 1 80 2635 7.14 951 880 245.7
D 8 176 2770 8.79 814 735 231.4
D 7 3 2083 5.82 814 735 231.4
D 15 47 2076 5.79 814 735 231.4

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