ASTROSAT CZTI

Data Quality Report

Orbit 33947

Creation date: 2024-06-27T20:54:35.046495
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/AS1A11_068T02_9000004850_33947cztM0_level2.evt modeM0/AS1A11_068T02_9000004850_33947cztM0_level2_quad_clean.evt
Size (bytes)570,695,04057,576,960
Size544.3 MB 54.9 MB
Events in quadrant A2,580,642357,846
Events in quadrant B3,402,135356,681
Events in quadrant C5,351,144343,681
Events in quadrant D5,588,676310,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108523
B0133602
C0195722
D0202582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534150.093615%
B53413135.860326%
C53413917.320726%
D534160911.402359%

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 7283 5342 0 0 0.00% 0.00%
B 7283 5341 248 248 3.41% 4.64%
C 7283 5342 285 285 3.91% 5.34%
D 7283 5342 575 575 7.90% 10.76%

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 13 6 20958 153.82 658 647 132.0
A 10 83 15454 112.13 658 647 132.0
A 13 254 8668 60.74 658 647 132.0
B 0 182 479386 3913.92 640 625 122.3
B 5 172 244174 1991.04 640 625 122.3
B 4 81 47483 383.07 640 625 122.3
C 3 233 2391004 16574.11 623 628 144.2
C 15 214 229071 1583.95 623 628 144.2
C 0 10 181243 1252.33 623 628 144.2
D 12 6 1510565 8899.78 613 599 169.7
D 8 195 730340 4301.11 613 599 169.7
D 2 250 305365 1796.3 613 599 169.7

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