ASTROSAT CZTI

Data Quality Report

Orbit 35419

Creation date: 2022-04-20T20:08:34.522305
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_097T07_9000005072_35419cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35419cztM0_level2_quad_clean.evt
Size (bytes)257,820,48033,091,200
Size245.9 MB 31.6 MB
Events in quadrant A1,437,300208,390
Events in quadrant B2,697,559201,527
Events in quadrant C1,678,963198,766
Events in quadrant D1,803,184193,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058532
B099811
C065021
D071511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278650.179469%
B27862197.860732%
C2786973.481694%
D2786341.220388%

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 4668 2787 0 0 0.00% 0.00%
B 4668 2787 116 116 2.49% 4.16%
C 4668 2787 64 64 1.37% 2.30%
D 4668 2787 33 33 0.71% 1.18%

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 61917 862.36 350 343 71.4
A 5 168 11931 162.29 350 343 71.4
A 13 6 8673 116.66 350 343 71.4
B 4 251 670483 9924.6 343 333 67.5
B 5 236 443095 6557.1 343 333 67.5
B 5 172 128806 1902.62 343 333 67.5
C 0 10 248661 3130.96 334 336 79.3
C 15 214 111980 1407.64 334 336 79.3
C 3 233 10637 129.88 334 336 79.3
D 8 195 146478 1780.38 337 330 82.1
D 7 80 135319 1644.44 337 330 82.1
D 7 223 79717 967.09 337 330 82.1

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