ASTROSAT CZTI

Data Quality Report

Orbit 34643

Creation date: 2022-02-23T21:48:04.159048
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_008T01_9000004956_34643cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34643cztM0_level2_quad_clean.evt
Size (bytes)585,123,84065,401,920
Size558.0 MB 62.4 MB
Events in quadrant A2,560,818411,680
Events in quadrant B3,416,656404,944
Events in quadrant C2,847,077407,413
Events in quadrant D8,525,713372,631

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111893
B0135622
C0115932
D0292612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547890.164294%
B54782043.723987%
C5478520.949252%
D547888216.100767%

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 7090 5479 3 3 0.04% 0.05%
B 7090 5479 148 148 2.09% 2.70%
C 7090 5479 35 35 0.49% 0.64%
D 7090 5479 754 754 10.63% 13.76%

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 48966 375.04 639 628 128.9
A 9 143 22717 171.38 639 628 128.9
A 13 6 12818 94.58 639 628 128.9
B 5 172 733105 6055.75 626 610 121.0
B 0 189 75451 618.73 626 610 121.0
B 0 190 28080 227.1 626 610 121.0
C 15 214 232283 1601.44 617 620 144.7
C 0 10 135853 934.84 617 620 144.7
C 14 67 28652 193.78 617 620 144.7
D 10 203 3716262 22903.95 596 584 162.2
D 8 195 1874037 11548.22 596 584 162.2
D 14 52 131203 805.15 596 584 162.2

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