ASTROSAT CZTI

Data Quality Report

Orbit 20151222_G04_014T02_9000000228_level2

Creation date: 2016-09-06T17:56:13.275619
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/AS1G04_014T02_9000000228cztM0_level2_bc.evt modeM0/AS1G04_014T02_9000000228cztM0_level2_quad_clean.evt
Size (bytes)75,398,40023,601,600
Size71.9 MB 22.5 MB
Events in quadrant A286,408158,548
Events in quadrant B372,003161,534
Events in quadrant C329,423154,485
Events in quadrant D1,196,225139,291

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057662
B065691
C061731
D085711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134010.074627%
B1340171.268657%
C134020.149254%
D1340896.641791%

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 1339 1339 0 0 0.00% 0.00%
B 1339 1339 0 0 0.00% 0.00%
C 1338 1338 0 0 0.00% 0.00%
D 1340 1340 0 0 0.00% 0.00%

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 32 8124 491.79 70 69 16.4
A 8 14 2448 145.25 70 69 16.4
A 13 9 2244 132.79 70 69 16.4
B 6 53 40195 2695.14 72 70 14.9
B 8 4 38124 2556.04 72 70 14.9
B 15 22 6970 463.46 72 70 14.9
C 15 241 52185 3290.53 69 68 15.8
C 9 52 1836 111.63 69 68 15.8
C 3 79 1481 89.21 69 68 15.8
D 12 22 811894 52000.97 65 63 15.6
D 10 84 63936 4091.32 65 63 15.6
D 13 169 59275 3792.76 65 63 15.6

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