ASTROSAT CZTI

Data Quality Report

Orbit 20160519_G05_245T01_9000000460_level2

Creation date: 2017-10-27T02:26:06.906680
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/AS1G05_245T01_9000000460cztM0_level2.evt modeM0/AS1G05_245T01_9000000460cztM0_level2_quad_clean.evt
Size (bytes)9,235,428,4801,546,148,160
Size8.6 GB 1.4 GB
Events in quadrant A69,152,0109,507,284
Events in quadrant B69,301,0649,687,798
Events in quadrant C74,704,8509,513,069
Events in quadrant D58,007,5059,451,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02942600
B02897860
C03110120
D02688420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01890
B01890
C01890
D01890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025720
B025720
C025720
D025720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12650839363.111266%
B12650825652.027540%
C12650858934.658203%
D12650818801.486072%

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 151558 126525 1402 1402 0.93% 1.11%
B 151558 126524 511 511 0.34% 0.40%
C 151559 126525 4025 4025 2.66% 3.18%
D 151559 126525 689 689 0.45% 0.54%

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 0 50 6918495 2330.3 14533 14240 2962.8
A 0 118 3930223 1321.71 14533 14240 2962.8
A 14 111 583103 192.0 14533 14240 2962.8
B 15 204 6563757 2298.6 14798 14447 2849.3
B 4 81 1378060 478.58 14798 14447 2849.3
B 2 249 893831 308.64 14798 14447 2849.3
C 7 220 17227552 5297.87 14059 14151 3249.1
C 1 192 1389235 423.22 14059 14151 3249.1
C 1 16 446083 132.94 14059 14151 3249.1
D 13 46 1533638 447.85 14202 13822 3393.6
D 13 239 631394 181.98 14202 13822 3393.6
D 13 223 612127 176.31 14202 13822 3393.6

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