ASTROSAT CZTI

Data Quality Report

Orbit 33744

Creation date: 2024-06-27T20:52:02.631537
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_086T01_9000004816_33744cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33744cztM0_level2_quad_clean.evt
Size (bytes)495,627,84094,115,520
Size472.7 MB 89.8 MB
Events in quadrant A2,493,169633,154
Events in quadrant B4,472,247617,673
Events in quadrant C2,927,165642,668
Events in quadrant D4,770,555597,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107003
B0168242
C0117552
D0178032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5126340.663285%
B51264168.115490%
C5126781.521654%
D51261432.789700%

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 9279 5128 26 26 0.28% 0.51%
B 9279 5128 359 359 3.87% 7.00%
C 9279 5128 65 65 0.70% 1.27%
D 9279 5128 149 149 1.61% 2.91%

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 14 4 93960 764.36 610 599 122.1
A 15 237 24040 191.92 610 599 122.1
A 10 83 9347 71.62 610 599 122.1
B 5 172 1294032 11320.05 597 581 114.3
B 4 170 296576 2590.5 597 581 114.3
B 5 255 198724 1734.11 597 581 114.3
C 15 214 221864 1597.23 602 610 138.5
C 0 10 210231 1513.25 602 610 138.5
C 9 187 107798 773.79 602 610 138.5
D 8 195 1596512 9930.67 589 578 160.7
D 1 47 218514 1356.1 589 578 160.7
D 2 249 160867 997.4 589 578 160.7

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