ASTROSAT CZTI

Data Quality Report

Orbit 51144

Creation date: 2025-03-13T09:00:16.296594
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/AS1C07_001T02_9000006452_51144cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51144cztM0_level2_quad_clean.evt
Size (bytes)664,200,00092,341,440
Size633.4 MB 88.1 MB
Events in quadrant A6,316,479605,568
Events in quadrant B4,298,610664,496
Events in quadrant C7,323,103560,707
Events in quadrant D6,132,650500,256

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234502
B0175182
C0264672
D0230302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66643505.252101%
B66653355.026257%
C666592513.878470%
D6665102915.438860%

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 8584 6666 356 356 4.15% 5.34%
B 8585 6667 187 187 2.18% 2.80%
C 8585 6667 811 811 9.45% 12.16%
D 8585 6667 956 956 11.14% 14.34%

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 12 80 1931984 11482.16 683 665 168.2
A 12 3 870693 5172.52 683 665 168.2
A 13 248 176750 1046.87 683 665 168.2
B 5 185 424004 2867.04 686 662 147.7
B 0 213 256349 1731.61 686 662 147.7
B 8 128 239385 1616.73 686 662 147.7
C 10 171 2152955 11941.4 654 649 180.2
C 15 230 1380612 7656.29 654 649 180.2
C 4 12 326954 1810.4 654 649 180.2
D 2 62 2187110 12676.99 612 591 172.5
D 3 12 490055 2837.81 612 591 172.5
D 8 176 371958 2153.11 612 591 172.5

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