ASTROSAT CZTI

Data Quality Report

Orbit 11153

Creation date: 2024-06-27T16:09:05.052484
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/AS1A04_058T02_9000001626_11153cztM0_level2.evt modeM0/AS1A04_058T02_9000001626_11153cztM0_level2_quad_clean.evt
Size (bytes)1,185,189,120184,884,480
Size1.1 GB 176.3 MB
Events in quadrant A11,658,6851,132,538
Events in quadrant B8,905,5811,201,511
Events in quadrant C5,665,3061,252,958
Events in quadrant D8,834,1181,160,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02546
B02544
C02544
D02544

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044025739
B035346667
C025983467
D035144465

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12309171313.916646%
B122939687.874400%
C123111140.926001%
D123176375.171714%

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 13860 12369 1185 1185 8.55% 9.58%
B 13860 12357 572 572 4.13% 4.63%
C 13860 12363 36 36 0.26% 0.29%
D 13860 12371 467 467 3.37% 3.77%

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 8 5 2468290 9127.94 1333 1303 270.3
A 0 23 1931617 7142.23 1333 1303 270.3
A 8 15 1259957 4657.07 1333 1303 270.3
B 4 239 2777440 10578.65 1385 1349 262.4
B 15 204 297492 1128.49 1385 1349 262.4
B 0 219 156322 590.54 1385 1349 262.4
C 9 204 157437 485.46 1386 1393 321.4
C 0 207 72050 219.82 1386 1393 321.4
C 13 61 10288 27.67 1386 1393 321.4
D 1 52 655463 2005.21 1357 1314 326.2
D 2 14 654134 2001.14 1357 1314 326.2
D 13 104 446218 1363.8 1357 1314 326.2

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