ASTROSAT CZTI

Data Quality Report

Orbit 34694

Creation date: 2022-07-18T18:33:49.828016
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/AS1A07_138T08_9000004970_34694cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34694cztM0_level2_quad_clean.evt
Size (bytes)384,327,36065,266,560
Size366.5 MB 62.2 MB
Events in quadrant A2,040,905425,811
Events in quadrant B3,549,944415,995
Events in quadrant C2,145,063428,211
Events in quadrant D3,609,505401,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089902
B0133811
C090401
D0137551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4320130.300926%
B43204199.699074%
C4320300.694444%
D43201002.314815%

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 6053 4321 3 3 0.05% 0.07%
B 6053 4320 300 300 4.96% 6.94%
C 6053 4321 21 21 0.35% 0.49%
D 6053 4321 46 46 0.76% 1.06%

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 7 3 30008 293.87 495 485 100.5
A 10 83 26419 258.14 495 485 100.5
A 9 143 26369 257.65 495 485 100.5
B 5 172 1358369 14797.33 475 462 91.8
B 5 255 278129 3025.78 475 462 91.8
B 4 232 14226 149.99 475 462 91.8
C 15 214 180413 1618.57 476 480 111.2
C 0 10 74575 666.52 476 480 111.2
C 14 67 27716 245.0 476 480 111.2
D 8 195 1232087 10608.24 471 456 116.1
D 1 52 239477 2058.73 471 456 116.1
D 2 249 152858 1312.66 471 456 116.1

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