ASTROSAT CZTI

Data Quality Report

Orbit 42807

Creation date: 2024-06-27T22:44:28.918866
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/AS1C06_010T01_9000005824_42807cztM0_level2.fits modeM0/AS1C06_010T01_9000005824_42807cztM0_level2_quad_clean.evt
Size (bytes)347,863,68089,464,320
Size331.7 MB 85.3 MB
Events in quadrant A2,885,820602,920
Events in quadrant B2,943,449622,128
Events in quadrant C3,201,370593,481
Events in quadrant D3,455,028538,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117002
B0121252
C0127062
D0138042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5026190.378034%
B50261202.387585%
C50261332.646240%
D50262074.118583%

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 7089 5027 6 6 0.08% 0.12%
B 7089 5027 87 87 1.23% 1.73%
C 7089 5027 128 128 1.81% 2.55%
D 7089 5027 203 203 2.86% 4.04%

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 590872 5255.34 552 542 112.3
A 12 189 115888 1026.85 552 542 112.3
A 2 79 15790 135.74 552 542 112.3
B 0 229 534746 5128.63 556 541 104.2
B 4 171 140105 1339.88 556 541 104.2
B 0 245 24626 231.23 556 541 104.2
C 4 254 619657 4900.78 548 552 126.3
C 15 214 201724 1592.46 548 552 126.3
C 8 79 96536 759.8 548 552 126.3
D 2 249 488303 3730.5 538 522 130.8
D 12 233 376191 2873.08 538 522 130.8
D 5 70 128483 978.63 538 522 130.8

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