ASTROSAT CZTI

Data Quality Report

Orbit 20180105_A04_183T02_9000001816_level2

Creation date: 2018-08-03T20:05:38.338671
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/AS1A04_183T02_9000001816cztM0_level2_bc.evt modeM0/AS1A04_183T02_9000001816cztM0_level2_quad_clean.evt
Size (bytes)5,257,998,7201,593,178,560
Size4.9 GB 1.5 GB
Events in quadrant A36,350,2379,862,719
Events in quadrant B40,184,1299,803,449
Events in quadrant C27,669,43610,089,818
Events in quadrant D45,872,4699,277,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02070
B02070
C02070
D02070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027320
B027320
C027320
D027320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03225750
B03378510
C02799350
D03526730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13456834172.539237%
B13456871915.343767%
C13456811320.841210%
D13456885486.352179%

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 154308 134571 76 76 0.05% 0.06%
B 154308 134550 169 169 0.11% 0.13%
C 154308 134574 26 26 0.02% 0.02%
D 154308 134553 1172 1172 0.76% 0.87%

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 23 4805325 3284.71 6773 6646 1460.9
A 1 162 1631353 1112.12 6773 6646 1460.9
A 11 29 1285711 875.52 6773 6646 1460.9
B 4 239 7544711 5940.57 6765 6584 1268.9
B 3 64 2120603 1666.0 6765 6584 1268.9
B 0 85 2001592 1572.21 6765 6584 1268.9
C 14 234 547899 367.7 6758 6680 1471.9
C 4 254 391226 261.26 6758 6680 1471.9
C 15 208 237458 156.79 6758 6680 1471.9
D 1 52 13110554 8718.13 6554 6320 1503.1
D 5 222 2511349 1666.57 6554 6320 1503.1
D 10 199 641513 422.59 6554 6320 1503.1

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