ASTROSAT CZTI

Data Quality Report

Orbit 49707

Creation date: 2024-12-11T08:16:49.787787
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/AS1T05_233T01_9000006438_49707cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49707cztM0_level2_quad_clean.evt
Size (bytes)1,123,666,56055,313,280
Size1.0 GB 52.8 MB
Events in quadrant A13,967,936404,394
Events in quadrant B4,212,910612,736
Events in quadrant C7,957,28024,028
Events in quadrant D14,997,642212,419

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455340
B0166590
C0277880
D0485470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5921509586.049654%
B59224086.889564%
C59225922100.000000%
D5921579397.838203%

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 6990 5920 5379 5379 76.95% 90.86%
B 6992 5922 233 233 3.33% 3.93%
C 6991 5921 694 694 9.93% 11.72%
D 6990 5920 5585 5585 79.90% 94.34%

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 10 83 6931439 53741.97 463 449 129.0
A 12 50 1469472 11390.61 463 449 129.0
A 3 130 631986 4896.85 463 449 129.0
B 5 172 474392 3502.75 630 612 135.3
B 1 255 370991 2738.28 630 612 135.3
B 5 185 179795 1324.73 630 612 135.3
C 15 180 2471748 103021.61 42 40 24.0
C 15 190 1881499 78419.83 42 40 24.0
C 15 181 953583 39743.99 42 40 24.0
D 15 40 3625145 39888.6 270 258 90.9
D 7 61 1252085 13775.22 270 258 90.9
D 4 99 1092245 12016.33 270 258 90.9

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