ASTROSAT CZTI

Data Quality Report

Orbit 50651

Creation date: 2025-02-08T08:59:51.667479
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_241T01_9000006446_50651cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50651cztM0_level2_quad_clean.evt
Size (bytes)523,584,00088,678,080
Size499.3 MB 84.6 MB
Events in quadrant A5,586,282521,025
Events in quadrant B4,306,074639,764
Events in quadrant C4,824,533557,494
Events in quadrant D4,185,902535,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209001
B0170492
C0184801
D0168441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A617089214.457050%
B61691832.966445%
C61693936.370562%
D61701722.787682%

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 7270 6171 755 755 10.39% 12.23%
B 7269 6170 61 61 0.84% 0.99%
C 7269 6170 313 313 4.31% 5.07%
D 7270 6171 121 121 1.66% 1.96%

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 4 249 911843 5998.56 616 601 151.9
A 6 161 630754 4148.19 616 601 151.9
A 3 130 524803 3450.74 616 601 151.9
B 4 170 925767 6732.72 652 633 137.4
B 5 185 170244 1234.35 652 633 137.4
B 4 206 111326 805.58 652 633 137.4
C 4 5 452561 2590.39 637 629 174.5
C 13 3 360559 2063.05 637 629 174.5
C 15 174 335147 1917.39 637 629 174.5
D 11 245 340251 1940.03 640 619 175.1
D 15 122 296041 1687.49 640 619 175.1
D 2 249 174032 990.56 640 619 175.1

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