ASTROSAT CZTI

Data Quality Report

Orbit 20151105_P01_014T06_9000000078_level2

Creation date: 2016-09-06T17:59:30.226221
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_014T06_9000000078cztM0_level2_bc.evt modeM0/AS1P01_014T06_9000000078cztM0_level2_quad_clean.evt
Size (bytes)818,199,360289,422,720
Size780.3 MB 276.0 MB
Events in quadrant A4,952,9891,832,356
Events in quadrant B5,153,7471,858,294
Events in quadrant C4,031,3611,822,680
Events in quadrant D9,129,4151,730,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04540
C04540
D04540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0962120
B0952940
C0864120
D01018950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221161910.863628%
B22116430.194429%
C2211690.040695%
D221165122.315066%

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 35051 22116 139 139 0.40% 0.63%
B 35051 22116 6 6 0.02% 0.03%
C 35051 22116 0 0 0.00% 0.00%
D 35051 22116 183 183 0.52% 0.83%

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 0 149 449480 2230.85 948 928 201.1
A 0 238 336480 1668.85 948 928 201.1
A 15 143 150421 743.5 948 928 201.1
B 4 250 688048 3980.61 975 947 172.6
B 8 4 80950 463.48 975 947 172.6
B 4 235 74001 423.23 975 947 172.6
C 5 249 173949 869.47 939 924 199.0
C 15 241 59074 292.21 939 924 199.0
C 3 159 24388 117.91 939 924 199.0
D 12 237 1242819 6149.61 922 897 202.0
D 1 4 854760 4228.06 922 897 202.0
D 9 52 671124 3318.75 922 897 202.0

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