ASTROSAT CZTI

Data Quality Report

Orbit 20180809_G08_036T01_9000002290_level2

Creation date: 2018-08-10T09:41:36.552680
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/AS1G08_036T01_9000002290cztM0_level2_bc.evt modeM0/AS1G08_036T01_9000002290cztM0_level2_quad_clean.evt
Size (bytes)720,348,480260,441,280
Size687.0 MB 248.4 MB
Events in quadrant A4,292,6871,659,471
Events in quadrant B4,918,0281,674,354
Events in quadrant C4,310,2471,616,634
Events in quadrant D6,931,9631,566,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422470
B0441750
C0422650
D0515160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199073201.607475%
B199073741.878736%
C199073241.627568%
D199077723.878033%

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 22493 19909 6 6 0.03% 0.03%
B 22493 19910 17 17 0.08% 0.09%
C 22493 19909 0 0 0.00% 0.00%
D 22493 19909 99 99 0.44% 0.50%

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 15 69 84912 366.08 1038 1016 229.2
A 0 253 80096 345.06 1038 1016 229.2
A 9 143 60361 258.95 1038 1016 229.2
B 10 245 254957 1262.6 1043 1016 201.1
B 4 142 216711 1072.44 1043 1016 201.1
B 0 189 87372 429.36 1043 1016 201.1
C 3 233 382093 1628.3 994 987 234.1
C 9 54 80374 339.18 994 987 234.1
C 0 207 12400 48.76 994 987 234.1
D 1 52 1847059 7825.11 1004 965 235.9
D 5 222 609766 2580.55 1004 965 235.9
D 10 70 130390 548.6 1004 965 235.9

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