ASTROSAT CZTI

Data Quality Report

Orbit 33498

Creation date: 2024-06-27T20:49:30.107065
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/AS1A11_060T01_9000004804_33498cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33498cztM0_level2_quad_clean.evt
Size (bytes)457,413,12058,112,640
Size436.2 MB 55.4 MB
Events in quadrant A2,633,099346,937
Events in quadrant B3,376,199348,028
Events in quadrant C3,333,925345,447
Events in quadrant D4,133,498331,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111572
B0133381
C0130271
D0160161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555270.126081%
B55521282.305476%
C5552971.747118%
D55521051.891210%

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 9679 5554 0 0 0.00% 0.00%
B 9679 5554 84 84 0.87% 1.51%
C 9679 5554 76 76 0.79% 1.37%
D 9679 5554 91 91 0.94% 1.64%

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 13 254 7895 53.14 680 668 136.0
A 3 137 6600 43.62 680 668 136.0
A 10 83 5721 37.16 680 668 136.0
B 5 172 527102 4064.76 675 658 129.5
B 5 255 152686 1173.83 675 658 129.5
B 12 111 15785 116.8 675 658 129.5
C 0 10 237998 1538.72 664 671 154.2
C 15 214 236689 1530.23 664 671 154.2
C 1 23 125027 806.27 664 671 154.2
D 8 195 739427 4566.55 661 642 161.8
D 2 249 351771 2170.39 661 642 161.8
D 2 120 148465 913.72 661 642 161.8

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