ASTROSAT CZTI

Data Quality Report

Orbit 20210215_A10_099T01_9000004184_level2

Creation date: 2021-02-20T14:07:30.561790
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/AS1A10_099T01_9000004184cztM0_level2_bc.evt modeM0/AS1A10_099T01_9000004184cztM0_level2_quad_clean.evt
Size (bytes)11,139,920,6403,904,295,040
Size10.4 GB 3.6 GB
Events in quadrant A64,111,76325,039,799
Events in quadrant B69,145,37825,498,713
Events in quadrant C64,455,41624,264,565
Events in quadrant D119,686,59723,351,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059860
B059860
C059860
D059860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06205600
B06389870
C06278940
D08113570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29360833011.124288%
B29360946581.586464%
C29360954281.848717%
D293609128434.374185%

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 344289 293623 1 1 0.00% 0.00%
B 344289 293620 28 28 0.01% 0.01%
C 344289 293620 0 0 0.00% 0.00%
D 344289 293615 1881 1881 0.55% 0.64%

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 493279 135.79 16496 16246 3512.9
A 15 174 292186 78.55 16496 16246 3512.9
A 0 226 104312 25.07 16496 16246 3512.9
B 0 183 1571545 506.1 16625 16266 3073.1
B 10 246 1441063 463.64 16625 16266 3073.1
B 10 245 877286 280.18 16625 16266 3073.1
C 3 233 2696579 727.09 15848 15841 3687.0
C 2 114 561597 148.02 15848 15841 3687.0
C 14 241 94659 21.38 15848 15841 3687.0
D 1 52 37190192 10405.41 15868 15370 3572.6
D 8 195 17392142 4863.84 15868 15370 3572.6
D 2 234 1201635 332.04 15868 15370 3572.6

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