ASTROSAT CZTI

Data Quality Report

Orbit 46461

Creation date: 2024-06-27T23:23:23.920872
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_037T01_9000006212_46461cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46461cztM0_level2_quad_clean.evt
Size (bytes)422,879,04098,640,000
Size403.3 MB 94.1 MB
Events in quadrant A5,494,414658,486
Events in quadrant B2,857,331683,915
Events in quadrant C2,872,414646,831
Events in quadrant D3,972,072586,134

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
A0203581
B0124681
C0127711
D0158701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58872033.448276%
B58871312.225242%
C5888811.375679%
D58882554.330842%

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 6977 5888 4 4 0.06% 0.07%
B 6977 5888 17 17 0.24% 0.29%
C 6978 5890 24 24 0.34% 0.41%
D 6978 5890 191 191 2.74% 3.24%

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 2811895 19917.68 678 663 141.1
A 2 79 16701 113.63 678 663 141.1
A 0 247 12685 85.18 678 663 141.1
B 4 158 44129 329.93 674 654 131.8
B 10 128 37722 281.31 674 654 131.8
B 5 32 32027 238.09 674 654 131.8
C 2 14 189333 1225.1 657 659 154.0
C 3 233 44096 282.05 657 659 154.0
C 12 2 39990 255.39 657 659 154.0
D 1 52 739127 4555.88 658 639 162.1
D 12 233 187193 1150.89 658 639 162.1
D 2 249 125253 768.77 658 639 162.1

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