ASTROSAT CZTI

Data Quality Report

Orbit 20200426_A07_147T01_9000003624_level2

Creation date: 2020-04-29T11:37:41.838035
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_147T01_9000003624cztM0_level2_bc.evt modeM0/AS1A07_147T01_9000003624cztM0_level2_quad_clean.evt
Size (bytes)4,806,912,9601,642,682,880
Size4.5 GB 1.5 GB
Events in quadrant A27,819,68810,666,265
Events in quadrant B41,993,87010,271,321
Events in quadrant C31,657,44010,110,293
Events in quadrant D35,386,0559,933,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02682880
B03278910
C02837880
D02902820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026100
B026100
C026100
D026100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12804715591.217522%
B128046100157.821408%
C12804729502.303842%
D12804720591.608003%

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 149882 128050 0 0 0.00% 0.00%
B 149882 126598 763 763 0.51% 0.60%
C 149882 128055 26 26 0.02% 0.02%
D 149882 128052 149 149 0.10% 0.12%

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 13 254 170257 106.53 7181 7061 1531.9
A 12 96 56468 32.25 7181 7061 1531.9
A 4 2 49080 27.43 7181 7061 1531.9
B 3 64 14305306 11119.18 6915 6757 1285.9
B 10 246 502435 385.46 6915 6757 1285.9
B 0 189 237803 179.67 6915 6757 1285.9
C 7 247 4251112 2693.7 6797 6769 1575.7
C 10 91 583613 366.1 6797 6769 1575.7
C 2 16 476201 297.93 6797 6769 1575.7
D 8 195 4361676 2746.57 6948 6709 1585.6
D 1 52 2514313 1581.48 6948 6709 1585.6
D 12 233 1361247 854.27 6948 6709 1585.6

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