ASTROSAT CZTI

Data Quality Report

Orbit 36802

Creation date: 2024-06-27T21:31:52.814548
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_075T01_9000005244_36802cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36802cztM0_level2_quad_clean.evt
Size (bytes)808,323,84056,842,560
Size770.9 MB 54.2 MB
Events in quadrant A2,674,991403,765
Events in quadrant B14,485,928139,523
Events in quadrant C2,756,749408,382
Events in quadrant D4,182,372374,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114862
B0468821
C0115141
D0162671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561960.106781%
B5619546497.241502%
C561960.106781%
D56194808.542445%

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 6932 5620 0 0 0.00% 0.00%
B 6931 5618 5383 5383 77.67% 95.82%
C 6932 5620 6 6 0.09% 0.11%
D 6932 5620 432 432 6.23% 7.69%

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 187523 1452.18 630 618 128.7
A 9 143 20354 153.34 630 618 128.7
A 15 223 12227 90.2 630 618 128.7
B 12 1 13215719 286494.19 234 229 46.1
B 4 171 119014 2575.1 234 229 46.1
B 0 190 78785 1702.99 234 229 46.1
C 15 214 237683 1652.6 613 616 143.5
C 0 207 43898 301.72 613 616 143.5
C 14 254 26662 181.57 613 616 143.5
D 1 20 580656 3979.73 592 574 145.8
D 2 120 319822 2190.24 592 574 145.8
D 12 227 259551 1776.75 592 574 145.8

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