ASTROSAT CZTI

Data Quality Report

Orbit 20170808_G07_039T01_9000001444_level2

Creation date: 2017-10-18T09:15:08.860632
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/AS1G07_039T01_9000001444cztM0_level2.evt modeM0/AS1G07_039T01_9000001444cztM0_level2_quad_clean.evt
Size (bytes)866,842,560186,952,320
Size826.7 MB 178.3 MB
Events in quadrant A5,800,5961,242,705
Events in quadrant B6,296,6681,252,193
Events in quadrant C5,486,7681,220,012
Events in quadrant D7,885,6731,147,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0700
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248770
B0263400
C0240650
D0311860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02380
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115671341.158468%
B115981611.388170%
C11590800.690250%
D115152422.101607%

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 19017 11798 0 0 0.00% 0.00%
B 19017 11799 22 22 0.12% 0.19%
C 19017 11808 0 0 0.00% 0.00%
D 19017 11793 136 136 0.72% 1.15%

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 15 132954 446.98 1469 1443 294.2
A 0 226 13781 41.93 1469 1443 294.2
A 0 8 12908 38.97 1469 1443 294.2
B 0 214 151281 542.99 1467 1439 276.0
B 4 81 144598 518.77 1467 1439 276.0
B 10 245 77457 275.47 1467 1439 276.0
C 13 61 10719 28.89 1401 1410 322.2
C 8 222 8768 22.84 1401 1410 322.2
C 14 67 6574 16.03 1401 1410 322.2
D 2 16 927532 2497.87 1383 1359 370.8
D 8 195 718110 1933.06 1383 1359 370.8
D 2 152 201456 539.66 1383 1359 370.8

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