ASTROSAT CZTI

Data Quality Report

Orbit 20161221_A02_075T01_9000000906_level2

Creation date: 2017-09-22T13:56:47.775754
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_075T01_9000000906cztM0_level2.evt modeM0/AS1A02_075T01_9000000906cztM0_level2_quad_clean.evt
Size (bytes)649,463,04077,351,040
Size619.4 MB 73.8 MB
Events in quadrant A3,271,212483,408
Events in quadrant B3,401,562478,506
Events in quadrant C4,096,226466,595
Events in quadrant D8,403,922403,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148420
B0149960
C0172750
D0299960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313660.902502%
B7313730.998222%
C7313540.738411%
D7313196626.883632%

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 8053 7314 2 2 0.02% 0.03%
B 8053 7314 1 1 0.01% 0.01%
C 8053 7314 12 12 0.15% 0.16%
D 8053 7313 1461 1461 18.14% 19.98%

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 3 1 14972 82.24 838 817 172.1
A 14 111 13149 71.65 838 817 172.1
A 8 15 10454 55.99 838 817 172.1
B 4 80 37425 223.93 842 821 163.5
B 0 228 34220 204.32 842 821 163.5
B 4 81 26511 157.16 842 821 163.5
C 9 247 910242 4846.62 809 813 187.6
C 8 128 12180 60.58 809 813 187.6
C 13 61 6374 29.64 809 813 187.6
D 2 33 5399065 31057.1 710 688 173.8
D 8 195 101240 578.48 710 688 173.8
D 2 63 87606 500.04 710 688 173.8

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