ASTROSAT CZTI

Data Quality Report

Orbit 42892

Creation date: 2024-06-27T22:45:28.076253
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/AS1T05_143T01_9000005830_42892cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42892cztM0_level2_quad_clean.evt
Size (bytes)417,977,28087,986,880
Size398.6 MB 83.9 MB
Events in quadrant A3,434,451611,051
Events in quadrant B2,554,523631,873
Events in quadrant C4,563,261531,214
Events in quadrant D4,503,508514,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135642
B0112742
C0171082
D0169892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53531723.213152%
B5353330.616477%
C535364512.049318%
D53535079.471324%

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 7176 5354 121 121 1.69% 2.26%
B 7176 5354 21 21 0.29% 0.39%
C 7176 5354 595 595 8.29% 11.11%
D 7176 5353 456 456 6.35% 8.52%

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 600166 4929.81 587 575 121.6
A 15 237 406624 3338.52 587 575 121.6
A 2 79 91361 746.44 587 575 121.6
B 0 229 76304 668.38 588 573 113.3
B 5 172 61562 538.27 588 573 113.3
B 4 171 30961 268.2 588 573 113.3
C 12 2 2050690 16322.37 540 543 125.6
C 15 214 218170 1732.65 540 543 125.6
C 5 250 79946 632.17 540 543 125.6
D 1 52 1449816 10759.83 556 539 134.7
D 12 6 471160 3494.02 556 539 134.7
D 12 233 168783 1249.09 556 539 134.7

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