ASTROSAT CZTI

Data Quality Report

Orbit 20180708_T02_057T01_9000002212_level2

Creation date: 2018-07-13T15:11:40.395261
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/AS1T02_057T01_9000002212cztM0_level2_bc.evt modeM0/AS1T02_057T01_9000002212cztM0_level2_quad_clean.evt
Size (bytes)3,213,299,5201,291,464,000
Size3.0 GB 1.2 GB
Events in quadrant A21,979,6238,333,414
Events in quadrant B25,977,9508,355,405
Events in quadrant C21,282,2078,243,373
Events in quadrant D21,866,1517,939,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018520
B018520
C018520
D018520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02104140
B02130620
C01924860
D01986910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9114316871.850938%
B9114233913.720568%
C9114311751.289183%
D9114315891.743414%

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 103699 91146 13 13 0.01% 0.01%
B 103699 91132 447 447 0.43% 0.49%
C 103699 91145 29 29 0.03% 0.03%
D 103699 91147 206 206 0.20% 0.23%

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 1 162 1381792 1368.72 4614 4533 1006.2
A 15 239 1116348 1104.92 4614 4533 1006.2
A 12 189 1005806 995.06 4614 4533 1006.2
B 3 64 3299611 3819.62 4617 4504 862.7
B 10 16 2405389 2783.05 4617 4504 862.7
B 0 229 1158708 1337.93 4617 4504 862.7
C 3 233 2443436 2481.22 4477 4421 983.0
C 9 236 1165776 1181.45 4477 4421 983.0
C 0 207 75711 72.52 4477 4421 983.0
D 7 223 1181257 1131.57 4519 4366 1040.1
D 2 136 941629 901.17 4519 4366 1040.1
D 10 70 446297 424.91 4519 4366 1040.1

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