ASTROSAT CZTI

Data Quality Report

Orbit 48460

Creation date: 2024-09-13T10:28:46.089723
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_029T01_9000006426_48460cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48460cztM0_level2_quad_clean.evt
Size (bytes)460,368,000113,526,720
Size439.0 MB 108.3 MB
Events in quadrant A7,074,766743,466
Events in quadrant B3,285,150783,206
Events in quadrant C2,991,965750,831
Events in quadrant D3,160,281685,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260282
B0146092
C0139492
D0144482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68172473.623295%
B6817971.422913%
C6817270.396069%
D6817320.469415%

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 7897 6818 77 77 0.98% 1.13%
B 7897 6818 29 29 0.37% 0.43%
C 7897 6818 0 0 0.00% 0.00%
D 7897 6818 7 7 0.09% 0.10%

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 4133603 26255.21 756 742 157.4
A 13 254 13311 79.85 756 742 157.4
A 13 248 10963 64.93 756 742 157.4
B 0 186 158816 1050.94 761 738 150.4
B 12 16 47999 314.2 761 738 150.4
B 5 255 36508 237.81 761 738 150.4
C 12 249 9225 46.7 761 765 181.1
C 12 250 7380 36.52 761 765 181.1
C 12 2 6432 31.28 761 765 181.1
D 5 222 81065 421.24 757 735 190.7
D 2 249 72713 377.45 757 735 190.7
D 7 38 39875 205.25 757 735 190.7

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