ASTROSAT CZTI

Data Quality Report

Orbit 20181207_T03_059T01_9000002554_level2

Creation date: 2018-12-11T12:45:05.380304
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/AS1T03_059T01_9000002554cztM0_level2_bc.evt modeM0/AS1T03_059T01_9000002554cztM0_level2_quad_clean.evt
Size (bytes)5,886,224,6401,693,051,200
Size5.5 GB 1.6 GB
Events in quadrant A38,964,83910,915,191
Events in quadrant B26,751,72511,219,384
Events in quadrant C26,090,03610,551,322
Events in quadrant D77,538,7649,609,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03172270
B02722250
C02732310
D04273440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026700
B026700
C026700
D026700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13108054214.135642%
B13110716541.261565%
C13110720071.530811%
D1311071634912.469967%

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 158171 131084 1126 1126 0.71% 0.86%
B 158171 131102 2 2 0.00% 0.00%
C 158171 131110 1 1 0.00% 0.00%
D 158171 131106 10211 10211 6.46% 7.79%

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 14 235 11964484 8225.21 6726 6606 1453.8
A 0 23 710893 484.44 6726 6606 1453.8
A 13 210 315044 212.16 6726 6606 1453.8
B 0 230 152655 111.79 6894 6700 1305.6
B 0 229 105340 75.55 6894 6700 1305.6
B 15 19 68805 47.57 6894 6700 1305.6
C 3 233 1014370 668.56 6490 6450 1507.6
C 5 112 121630 76.4 6490 6450 1507.6
C 13 61 37323 20.48 6490 6450 1507.6
D 11 176 47061155 32535.04 6291 6082 1446.3
D 10 70 1243338 855.47 6291 6082 1446.3
D 1 52 1140428 784.31 6291 6082 1446.3

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