ASTROSAT CZTI

Data Quality Report

Orbit 40851

Creation date: 2024-06-27T22:21:19.762028
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/AS1A12_104T02_9000005572_40851cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40851cztM0_level2_quad_clean.evt
Size (bytes)384,050,88087,212,160
Size366.3 MB 83.2 MB
Events in quadrant A2,831,477606,584
Events in quadrant B2,545,525630,196
Events in quadrant C2,909,044583,618
Events in quadrant D5,539,451468,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114593
B0108742
C0117852
D0199632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5022350.696933%
B5022140.278773%
C50221042.070888%
D502279015.730785%

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 7084 5023 21 21 0.30% 0.42%
B 7084 5023 9 9 0.13% 0.18%
C 7084 5023 100 100 1.41% 1.99%
D 7084 5023 871 871 12.30% 17.34%

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 475321 4078.63 570 560 116.4
A 13 248 127728 1092.49 570 560 116.4
A 12 189 13294 109.4 570 560 116.4
B 7 202 146273 1327.77 572 558 109.7
B 4 171 78793 712.89 572 558 109.7
B 0 190 54084 487.74 572 558 109.7
C 14 254 286621 2215.47 554 559 129.1
C 15 214 212737 1643.26 554 559 129.1
C 0 10 212528 1641.64 554 559 129.1
D 12 79 3124959 23773.59 528 513 131.4
D 13 249 179914 1365.04 528 513 131.4
D 2 249 121993 924.33 528 513 131.4

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