ASTROSAT CZTI

Data Quality Report

Orbit 35636

Creation date: 2022-05-02T19:35:02.708928
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_106T01_9000005102_35636cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35636cztM0_level2_quad_clean.evt
Size (bytes)767,666,88084,127,680
Size732.1 MB 80.2 MB
Events in quadrant A13,522,297318,094
Events in quadrant B2,875,706632,522
Events in quadrant C3,216,833620,400
Events in quadrant D3,264,958593,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438113
B0118772
C0128142
D0131722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54455445100.000000%
B5445230.422406%
C54451472.699725%
D5445591.083563%

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 8997 5446 5287 5287 58.76% 97.08%
B 8998 5447 17 17 0.19% 0.31%
C 8998 5447 103 103 1.14% 1.89%
D 8998 5447 52 52 0.58% 0.95%

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 15 169 11884497 146228.76 400 393 81.3
A 10 83 78549 961.68 400 393 81.3
A 13 6 5803 66.57 400 393 81.3
B 5 172 235071 1823.2 667 649 128.6
B 12 111 15884 118.49 667 649 128.6
B 14 111 14429 107.17 667 649 128.6
C 0 10 407871 2680.79 657 664 151.9
C 15 214 227937 1496.22 657 664 151.9
C 15 159 7073 42.19 657 664 151.9
D 12 217 440229 2810.68 660 644 156.4
D 2 249 153504 977.38 660 644 156.4
D 13 249 52766 333.26 660 644 156.4

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