ASTROSAT CZTI

Data Quality Report

Orbit 20191019_A07_007T02_9000003244_level2

Creation date: 2019-10-22T14:05:43.615240
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_007T02_9000003244cztM0_level2_bc.evt modeM0/AS1A07_007T02_9000003244cztM0_level2_quad_clean.evt
Size (bytes)3,354,811,2001,451,525,760
Size3.1 GB 1.4 GB
Events in quadrant A22,529,2009,441,326
Events in quadrant B24,614,8099,534,326
Events in quadrant C21,018,6859,265,256
Events in quadrant D26,740,7308,991,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02111030
B02184570
C02085840
D02257520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020080
B020080
C020080
D020080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9828911701.190367%
B9828920772.113156%
C9828916571.685845%
D9828921572.194549%

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 116890 98276 4 4 0.00% 0.00%
B 116890 98273 172 172 0.15% 0.18%
C 116890 98277 6 6 0.01% 0.01%
D 116890 98279 128 128 0.11% 0.13%

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 2 79 880317 743.54 5565 5486 1176.6
A 13 254 151895 124.44 5565 5486 1176.6
A 4 2 146468 119.82 5565 5486 1176.6
B 3 64 2245496 2179.72 5578 5459 1027.7
B 0 230 337160 322.77 5578 5459 1027.7
B 0 197 325593 311.51 5578 5459 1027.7
C 10 22 109044 82.09 5422 5416 1262.3
C 9 54 43735 30.36 5422 5416 1262.3
C 13 61 31033 20.29 5422 5416 1262.3
D 1 52 1862954 1508.74 5483 5317 1231.3
D 13 174 1508242 1220.65 5483 5317 1231.3
D 12 235 931791 752.46 5483 5317 1231.3

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