ASTROSAT CZTI

Data Quality Report

Orbit 20160121_G02_050T01_9000000282_level2

Creation date: 2016-09-06T17:54:43.558188
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/AS1G02_050T01_9000000282cztM0_level2_bc.evt modeM0/AS1G02_050T01_9000000282cztM0_level2_quad_clean.evt
Size (bytes)1,864,137,600671,362,560
Size1.7 GB 640.3 MB
Events in quadrant A10,992,1184,155,138
Events in quadrant B15,862,8734,145,933
Events in quadrant C11,744,0684,048,662
Events in quadrant D13,829,2943,935,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02562620
B02761730
C02508380
D02499980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590195010.848879%
B590195360.908182%
C590196961.179281%
D5901914752.499195%

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 67594 59012 0 0 0.00% 0.00%
B 67594 59013 15 15 0.02% 0.03%
C 67594 59015 23 23 0.03% 0.04%
D 67593 58982 177 177 0.26% 0.30%

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 8 14 154820 269.15 2735 2670 565.3
A 15 143 101279 174.43 2735 2670 565.3
A 8 15 64122 108.71 2735 2670 565.3
B 8 3 4424189 9024.6 2784 2696 489.9
B 0 234 345115 698.9 2784 2696 489.9
B 5 189 177756 357.31 2784 2696 489.9
C 9 236 874138 1594.02 2654 2602 546.8
C 8 208 275069 498.34 2654 2602 546.8
C 12 4 117707 210.52 2654 2602 546.8
D 7 85 1386418 2429.58 2653 2559 569.6
D 7 204 664909 1162.86 2653 2559 569.6
D 1 83 439073 766.37 2653 2559 569.6

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