ASTROSAT CZTI

Data Quality Report

Orbit 20160214_P01_161T03_9000000320_level2

Creation date: 2017-10-31T11:23:55.295934
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_161T03_9000000320cztM0_level2.evt modeM0/AS1P01_161T03_9000000320cztM0_level2_quad_clean.evt
Size (bytes)2,888,023,680246,024,000
Size2.7 GB 234.6 MB
Events in quadrant A22,718,8111,535,884
Events in quadrant B22,982,8141,580,101
Events in quadrant C20,955,6781,572,911
Events in quadrant D19,586,0671,501,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801750
B0808910
C0749260
D0709770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C110
D110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04360
D04340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177861460.820870%
B17796740.415824%
C17805710.398764%
D17799590.331479%

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 42367 30442 633 633 1.49% 2.08%
B 42367 30461 450 450 1.06% 1.48%
C 42367 30481 358 358 0.84% 1.17%
D 42367 30466 262 262 0.62% 0.86%

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 0 199 927067 687.25 5607 5666 1340.7
A 0 128 263613 192.4 5607 5666 1340.7
A 14 5 59325 40.02 5607 5666 1340.7
B 5 68 374667 271.28 5864 5915 1359.3
B 4 48 233788 167.64 5864 5915 1359.3
B 0 198 69176 46.54 5864 5915 1359.3
C 10 65 68580 42.52 5335 5528 1482.8
C 10 82 47675 28.42 5335 5528 1482.8
C 14 223 36217 20.7 5335 5528 1482.8
D 2 32 136966 82.71 5134 5325 1591.6
D 13 53 77417 45.29 5134 5325 1591.6
D 12 3 66789 38.62 5134 5325 1591.6

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