ASTROSAT CZTI

Data Quality Report

Orbit 11417

Creation date: 2024-06-27T16:12:36.680890
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/AS1A04_024T04_9000001670_11417cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11417cztM0_level2_quad_clean.evt
Size (bytes)560,234,88090,106,560
Size534.3 MB 85.9 MB
Events in quadrant A4,678,587577,054
Events in quadrant B5,118,788572,754
Events in quadrant C2,899,845585,075
Events in quadrant D3,843,103554,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180932
B0193941
C0129351
D0156091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63023425.426849%
B63024937.822913%
C6302160.253888%
D63021141.808950%

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 7412 6303 206 206 2.78% 3.27%
B 7412 6303 258 258 3.48% 4.09%
C 7412 6303 0 0 0.00% 0.00%
D 7412 6303 62 62 0.84% 0.98%

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 8 5 1665390 10910.44 757 742 152.6
A 11 29 21469 135.85 757 742 152.6
A 8 15 20033 126.43 757 742 152.6
B 4 239 1762105 12479.5 745 727 141.1
B 11 51 165862 1169.99 745 727 141.1
B 3 189 98076 689.73 745 727 141.1
C 13 61 5526 28.03 743 745 170.5
C 3 202 1884 6.68 743 745 170.5
C 14 234 1734 5.8 743 745 170.5
D 1 52 234021 1320.38 746 726 176.7
D 13 104 191010 1076.95 746 726 176.7
D 13 152 165246 931.13 746 726 176.7

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