ASTROSAT CZTI

Data Quality Report

Orbit 20170817_A03_099T01_9000001472_level2

Creation date: 2017-09-24T15:52:25.532780
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/AS1A03_099T01_9000001472cztM0_level2.evt modeM0/AS1A03_099T01_9000001472cztM0_level2_quad_clean.evt
Size (bytes)8,929,465,9201,669,697,280
Size8.3 GB 1.6 GB
Events in quadrant A66,307,82510,504,234
Events in quadrant B64,398,88010,633,813
Events in quadrant C56,831,45210,656,821
Events in quadrant D74,600,42610,354,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02230
C02230
D02210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025190
B025170
C025120
D025140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02777300
B02702930
C02535630
D03032640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12196422501.844807%
B12213218151.486097%
C1228849140.743791%
D12523825432.030534%

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 149350 125792 753 753 0.50% 0.60%
B 149350 125911 387 387 0.26% 0.31%
C 149350 126313 2 2 0.00% 0.00%
D 149350 126656 1463 1463 0.98% 1.16%

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 15 4140293 1388.89 14894 14628 2970.5
A 15 223 2557738 856.13 14894 14628 2970.5
A 15 239 1097094 364.41 14894 14628 2970.5
B 4 239 2561620 917.68 14865 14558 2775.5
B 0 214 1279489 455.74 14865 14558 2775.5
B 11 51 1136537 404.24 14865 14558 2775.5
C 0 207 165573 45.44 14497 14579 3323.0
C 13 61 108957 28.4 14497 14579 3323.0
C 4 175 87040 21.81 14497 14579 3323.0
D 1 52 8250415 2145.8 14622 14371 3838.2
D 8 195 6208244 1613.73 14622 14371 3838.2
D 2 14 937719 240.57 14622 14371 3838.2

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