ASTROSAT CZTI

Data Quality Report

Orbit 20200207_A07_054T01_9000003486_level2

Creation date: 2020-02-10T12:48:59.331979
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/AS1A07_054T01_9000003486cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003486cztM0_level2_quad_clean.evt
Size (bytes)2,782,540,8001,428,416,640
Size2.6 GB 1.3 GB
Events in quadrant A15,443,6089,840,321
Events in quadrant B20,563,1159,816,486
Events in quadrant C16,779,0009,354,555
Events in quadrant D26,391,7679,134,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015280
B015300
C015300
D015300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01531470
B01714310
C01610810
D01867290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A747366330.846981%
B7473022152.964004%
C7473117902.395258%
D7472115652.094458%

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 91812 74753 0 0 0.00% 0.00%
B 91812 74735 277 277 0.30% 0.37%
C 91812 74743 243 243 0.26% 0.33%
D 91812 74727 289 289 0.31% 0.39%

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 6 16 185703 212.19 3944 3874 856.9
A 13 254 128146 145.02 3944 3874 856.9
A 0 226 25046 24.71 3944 3874 856.9
B 3 64 3489246 4712.2 3929 3839 739.7
B 0 189 1003103 1350.98 3929 3839 739.7
B 0 230 326259 435.9 3929 3839 739.7
C 10 9 1593243 1794.98 3739 3724 885.5
C 0 10 435905 488.04 3739 3724 885.5
C 7 247 184018 203.6 3739 3724 885.5
D 1 52 5463082 6117.56 3811 3682 892.4
D 9 85 2324025 2600.07 3811 3682 892.4
D 7 223 2032077 2272.93 3811 3682 892.4

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