ASTROSAT CZTI

Data Quality Report

Orbit 20190729_A06_002T02_9000003064_level2

Creation date: 2019-08-13T12:28:41.599066
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A06_002T02_9000003064cztM0_level2_bc.evt modeM0/AS1A06_002T02_9000003064cztM0_level2_quad_clean.evt
Size (bytes)949,501,440364,152,960
Size905.5 MB 347.3 MB
Events in quadrant A5,434,0102,363,805
Events in quadrant B5,706,3342,379,151
Events in quadrant C5,628,9452,222,068
Events in quadrant D10,122,7022,189,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561880
B0569820
C0565990
D0704190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05580
B05580
C05580
D05580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A272631920.704251%
B272633001.100392%
C272633881.423174%
D272635542.032058%

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 29878 27264 1 1 0.00% 0.00%
B 29878 27264 6 6 0.02% 0.02%
C 29878 27264 0 0 0.00% 0.00%
D 29878 27263 50 50 0.17% 0.18%

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 6 240 16227 47.09 1408 1378 315.3
A 0 226 9135 24.6 1408 1378 315.3
A 12 194 8750 23.38 1408 1378 315.3
B 3 64 151230 534.93 1412 1369 280.1
B 10 247 29735 101.25 1412 1369 280.1
B 0 183 25873 87.47 1412 1369 280.1
C 7 247 380272 1193.35 1333 1322 317.6
C 3 233 114728 357.13 1333 1322 317.6
C 9 54 11916 33.36 1333 1322 317.6
D 1 20 2119619 6527.35 1366 1315 324.5
D 1 52 1810400 5574.52 1366 1315 324.5
D 5 222 303811 932.11 1366 1315 324.5

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