ASTROSAT CZTI

Data Quality Report

Orbit 42952

Creation date: 2024-06-27T22:46:12.526100
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_9000005834_42952cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42952cztM0_level2_quad_clean.evt
Size (bytes)311,630,40088,441,920
Size297.2 MB 84.3 MB
Events in quadrant A3,196,778601,486
Events in quadrant B2,399,331619,755
Events in quadrant C2,445,218587,089
Events in quadrant D3,115,365528,078

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125331
B0103691
C0100931
D0125991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48601232.530864%
B4861330.678873%
C486140.082288%
D48612004.114380%

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 6923 4861 102 102 1.47% 2.10%
B 6924 4861 25 25 0.36% 0.51%
C 6924 4861 4 4 0.06% 0.08%
D 6924 4861 180 180 2.60% 3.70%

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 501350 4425.76 554 543 113.2
A 15 237 459106 4052.44 554 543 113.2
A 15 222 29273 253.89 554 543 113.2
B 4 171 62659 588.57 554 539 105.5
B 3 112 45570 426.66 554 539 105.5
B 15 32 36024 336.21 554 539 105.5
C 15 214 197255 1549.11 549 551 127.0
C 14 254 47450 369.35 549 551 127.0
C 12 249 37294 289.36 549 551 127.0
D 10 118 555416 4234.69 541 527 131.0
D 13 249 137262 1043.51 541 527 131.0
D 1 52 129989 988.0 541 527 131.0

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