ASTROSAT CZTI

Data Quality Report

Orbit 34569

Creation date: 2022-02-18T20:50:29.296517
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/AS1A05_167T01_9000004940_34569cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34569cztM0_level2_quad_clean.evt
Size (bytes)476,945,28048,568,320
Size454.9 MB 46.3 MB
Events in quadrant A2,695,919278,276
Events in quadrant B3,592,405279,827
Events in quadrant C2,904,119282,437
Events in quadrant D4,896,172261,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111123
B0139812
C0113812
D0183822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5246290.552802%
B52462234.250858%
C5246611.162791%
D52462114.022112%

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 7338 5247 10 10 0.14% 0.19%
B 7338 5247 145 145 1.98% 2.76%
C 7338 5247 50 50 0.68% 0.95%
D 7338 5247 173 173 2.36% 3.30%

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 90998 688.16 654 640 131.3
A 10 83 41222 309.07 654 640 131.3
A 7 16 11069 79.42 654 640 131.3
B 5 172 523912 4294.57 637 621 121.8
B 5 255 292329 2394.01 637 621 121.8
B 15 35 128550 1049.9 637 621 121.8
C 15 214 221939 1509.43 633 637 146.6
C 0 10 171171 1163.16 633 637 146.6
C 15 159 33686 225.42 633 637 146.6
D 8 195 1481711 9709.21 628 610 152.5
D 7 223 239386 1565.27 628 610 152.5
D 13 249 178741 1167.72 628 610 152.5

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