ASTROSAT CZTI

Data Quality Report

Orbit 20210606_A10_071T12_9000004446_level2

Creation date: 2021-06-08T11:32:51.532824
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_071T12_9000004446cztM0_level2_bc.evt modeM0/AS1A10_071T12_9000004446cztM0_level2_quad_clean.evt
Size (bytes)3,867,120,000882,368,640
Size3.6 GB 841.5 MB
Events in quadrant A16,561,0475,733,726
Events in quadrant B33,873,6905,724,197
Events in quadrant C17,403,8405,445,806
Events in quadrant D44,652,4215,146,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013880
B013880
C013880
D013880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01496930
B02084560
C01552820
D02390200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6818113692.007891%
B6818117122.510963%
C6818120693.034570%
D6818156168.236899%

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 79606 68173 30 30 0.04% 0.04%
B 79606 68168 7 7 0.01% 0.01%
C 79606 68169 23 23 0.03% 0.03%
D 79606 68170 1800 1800 2.26% 2.64%

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 0 13 1730597 2113.98 3840 3782 816.9
A 13 254 116817 138.38 3840 3782 816.9
A 0 226 23993 24.74 3840 3782 816.9
B 6 159 18365427 25585.66 3851 3772 717.7
B 0 230 143641 194.9 3851 3772 717.7
B 4 80 136573 185.05 3851 3772 717.7
C 0 10 1750072 2072.64 3619 3617 842.6
C 3 233 1348640 1596.23 3619 3617 842.6
C 2 114 130672 150.79 3619 3617 842.6
D 8 195 23104086 25150.5 3621 3528 918.5
D 12 227 2097202 2279.47 3621 3528 918.5
D 13 249 1956090 2125.83 3621 3528 918.5

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