ASTROSAT CZTI

Data Quality Report

Orbit 20170110_A02_090T02_9000000956_level2

Creation date: 2017-09-22T19:55:23.574805
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_090T02_9000000956cztM0_level2.evt modeM0/AS1A02_090T02_9000000956cztM0_level2_quad_clean.evt
Size (bytes)9,387,072,0001,630,068,480
Size8.7 GB 1.5 GB
Events in quadrant A65,114,44310,010,672
Events in quadrant B71,216,97610,103,253
Events in quadrant C63,555,07610,077,842
Events in quadrant D75,030,4309,664,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028360
B028360
C028360
D028360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02868180
B03043970
C02849250
D03130320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13889215491.115255%
B13887726631.917524%
C13889511110.799885%
D13888719121.376659%

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 160522 138957 11 11 0.01% 0.01%
B 160522 138937 479 479 0.30% 0.34%
C 160522 138954 5 5 0.00% 0.00%
D 160522 138943 522 522 0.33% 0.38%

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 13 14 422430 121.62 16618 16267 3339.7
A 0 23 181444 49.46 16618 16267 3339.7
A 0 226 171832 46.58 16618 16267 3339.7
B 0 228 4804087 1520.07 16638 16243 3149.7
B 4 81 319184 96.18 16638 16243 3149.7
B 12 111 315649 95.06 16638 16243 3149.7
C 7 247 175777 42.79 16176 16229 3728.3
C 13 61 127066 29.73 16176 16229 3728.3
C 12 4 109817 25.1 16176 16229 3728.3
D 8 195 8722455 2196.65 16188 15673 3963.7
D 2 136 1035030 257.18 16188 15673 3963.7
D 1 239 839164 207.76 16188 15673 3963.7

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