ASTROSAT CZTI

Data Quality Report

Orbit 49654

Creation date: 2024-12-04T12:51:16.373354
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_49654cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49654cztM0_level2_quad_clean.evt
Size (bytes)1,354,466,88038,744,640
Size1.3 GB 36.9 MB
Events in quadrant A18,201,815558
Events in quadrant B4,975,341671,660
Events in quadrant C10,289,0467,736
Events in quadrant D16,137,78711,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587641
B0195502
C0354611
D0526931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6908690599.956572%
B69074736.848125%
C6907686199.334009%
D6907682198.754886%

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 7447 6907 6759 6759 90.76% 97.86%
B 7446 6906 287 287 3.85% 4.16%
C 7446 6906 2057 2057 27.63% 29.79%
D 7446 6906 5632 5632 75.64% 81.55%

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 0 99 6420582 92559.19 183 172 69.4
A 3 130 2899019 41790.94 183 172 69.4
A 10 83 2889100 41647.94 183 172 69.4
B 4 206 518487 3345.31 729 708 154.8
B 3 232 459939 2967.04 729 708 154.8
B 7 0 285070 1837.23 729 708 154.8
C 15 180 2181416 68607.4 90 88 31.8
C 15 163 1523357 47910.04 90 88 31.8
C 15 197 994667 31281.62 90 88 31.8
D 15 40 2528257 41474.83 136 127 61.0
D 7 60 2311826 37924.21 136 127 61.0
D 7 45 2162445 35473.56 136 127 61.0

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