ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_999T99_9000000156_level2

Creation date: 2016-09-06T17:57:34.023163
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/AS1P01_999T99_9000000156cztM0_level2_bc.evt modeM0/AS1P01_999T99_9000000156cztM0_level2_quad_clean.evt
Size (bytes)29,911,68017,686,080
Size28.5 MB 16.9 MB
Events in quadrant A195,832113,114
Events in quadrant B216,993113,119
Events in quadrant C207,440114,439
Events in quadrant D204,017112,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04824
B04824
C04824
D04824

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168
B0168
C0168
D0168

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102105105
B0105425271
C094264713
D089544477

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1070222.056075%
B1070201.869159%
C1070181.682243%
D1070191.775701%

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 1069 1069 0 0 0.00% 0.00%
B 1069 1069 0 0 0.00% 0.00%
C 1069 1069 0 0 0.00% 0.00%
D 1069 1069 0 0 0.00% 0.00%

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 14 170 1875 143.62 50 49 12.7
A 14 79 390 26.82 50 49 12.7
A 0 214 164 9.05 50 49 12.7
B 3 0 20197 1765.4 50 49 11.4
B 4 200 1402 118.55 50 49 11.4
B 5 191 901 74.65 50 49 11.4
C 15 241 2484 191.64 49 49 12.7
C 3 111 2218 170.7 49 49 12.7
C 3 79 2178 167.55 49 49 12.7
D 11 131 10079 801.68 49 47 12.5
D 13 72 2376 186.11 49 47 12.5
D 9 52 1600 124.1 49 47 12.5

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