ASTROSAT CZTI

Data Quality Report

Orbit 34542

Creation date: 2022-02-17T01:23:14.215503
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_115T02_9000004934_34542cztM0_level2.evt modeM0/AS1A05_115T02_9000004934_34542cztM0_level2_quad_clean.evt
Size (bytes)491,607,36089,784,000
Size468.8 MB 85.6 MB
Events in quadrant A2,694,638592,117
Events in quadrant B3,499,588584,133
Events in quadrant C3,051,335590,997
Events in quadrant D5,254,033550,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117843
B0141382
C0124222
D0197052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573580.139494%
B57352253.923278%
C5735460.802092%
D57352975.178727%

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 9051 5737 2 2 0.02% 0.03%
B 9051 5737 131 131 1.45% 2.28%
C 9051 5737 29 29 0.32% 0.51%
D 9051 5737 255 255 2.82% 4.44%

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 42090 303.88 673 661 136.3
A 9 143 40895 295.11 673 661 136.3
A 13 254 10290 70.63 673 661 136.3
B 5 172 552061 4297.4 660 644 128.3
B 0 229 153096 1188.12 660 644 128.3
B 0 245 83656 646.94 660 644 128.3
C 15 214 257415 1683.56 656 662 152.5
C 0 10 112346 732.32 656 662 152.5
C 14 67 55159 357.34 656 662 152.5
D 8 195 1280395 7186.27 641 626 178.1
D 12 17 382165 2142.45 641 626 178.1
D 2 250 262613 1471.13 641 626 178.1

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