ASTROSAT CZTI

Data Quality Report

Orbit 20170323_A02_080T01_9000001104_level2

Creation date: 2017-09-23T12:03:14.213213
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/AS1A02_080T01_9000001104cztM0_level2.evt modeM0/AS1A02_080T01_9000001104cztM0_level2_quad_clean.evt
Size (bytes)3,256,646,400602,176,320
Size3.0 GB 574.3 MB
Events in quadrant A20,082,3603,972,310
Events in quadrant B22,515,8614,029,566
Events in quadrant C19,128,8953,891,742
Events in quadrant D34,076,7163,470,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08520
B08520
C08520
D08520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0882670
B0944590
C0860340
D01304400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A418655611.340021%
B4186210842.589461%
C418643140.750048%
D41864463611.073954%

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 50668 41877 49 49 0.10% 0.12%
B 50668 41877 361 361 0.71% 0.86%
C 50668 41877 0 0 0.00% 0.00%
D 50668 41876 3652 3652 7.21% 8.72%

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 4 2 640270 639.05 4994 4889 994.3
A 15 234 109558 105.27 4994 4889 994.3
A 0 226 46976 42.33 4994 4889 994.3
B 4 239 1471849 1570.35 5027 4905 934.2
B 11 51 456380 483.3 5027 4905 934.2
B 10 16 359752 379.86 5027 4905 934.2
C 1 16 115557 99.24 4867 4895 1115.1
C 13 61 37392 29.14 4867 4895 1115.1
C 8 222 25100 18.12 4867 4895 1115.1
D 2 250 11409123 9381.35 4561 4456 1215.7
D 13 169 2392516 1964.39 4561 4456 1215.7
D 1 52 1422801 1166.72 4561 4456 1215.7

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