ASTROSAT CZTI

Data Quality Report

Orbit 20191230_C05_002T02_9000003402_level2

Creation date: 2020-01-02T16:21:23.794366
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/AS1C05_002T02_9000003402cztM0_level2_bc.evt modeM0/AS1C05_002T02_9000003402cztM0_level2_quad_clean.evt
Size (bytes)356,420,160149,385,600
Size339.9 MB 142.5 MB
Events in quadrant A2,035,3561,011,983
Events in quadrant B2,145,9411,048,638
Events in quadrant C2,065,153996,682
Events in quadrant D3,948,365863,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187040
B0190820
C0191440
D0283160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8695470.540541%
B8695800.920069%
C86951431.644623%
D8694118613.641592%

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 11405 8695 0 0 0.00% 0.00%
B 11405 8696 5 5 0.04% 0.06%
C 11405 8695 9 9 0.08% 0.10%
D 11404 8687 162 162 1.42% 1.86%

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 11 47 47272 422.48 513 505 110.7
A 13 254 10848 93.44 513 505 110.7
A 6 16 10653 91.67 513 505 110.7
B 4 216 76734 767.65 526 516 99.3
B 0 189 35793 355.3 526 516 99.3
B 4 173 8199 77.38 526 516 99.3
C 10 9 105611 899.95 501 500 116.8
C 0 10 9743 79.13 501 500 116.8
C 7 247 8778 70.87 501 500 116.8
D 1 52 1852571 17245.35 457 441 107.4
D 13 174 166004 1541.57 457 441 107.4
D 13 153 126126 1170.26 457 441 107.4

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