ASTROSAT CZTI

Data Quality Report

Orbit 20428

Creation date: 2024-06-27T18:15:18.568954
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/AS1A05_188T01_9000003018_20428cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20428cztM0_level2_quad_clean.evt
Size (bytes)534,044,160104,952,960
Size509.3 MB 100.1 MB
Events in quadrant A3,673,260673,914
Events in quadrant B3,896,700677,835
Events in quadrant C3,699,741653,313
Events in quadrant D4,382,894639,934

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158591
B0163681
C0158591
D0179381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76701922.503259%
B76712052.672403%
C76712302.998305%
D76702302.998696%

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 7720 7671 1 1 0.01% 0.01%
B 7721 7672 1 1 0.01% 0.01%
C 7721 7672 0 0 0.00% 0.00%
D 7720 7671 59 59 0.76% 0.77%

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 5 16 26392 133.51 947 926 190.7
A 0 226 8086 37.54 947 926 190.7
A 3 137 8007 37.12 947 926 190.7
B 10 245 148288 817.7 937 913 180.2
B 12 111 22779 121.32 937 913 180.2
B 0 219 22524 119.91 937 913 180.2
C 14 238 140474 654.91 910 915 213.1
C 13 61 6287 25.21 910 915 213.1
C 8 128 5062 19.46 910 915 213.1
D 1 52 396316 1752.23 924 896 225.7
D 13 153 280513 1239.07 924 896 225.7
D 2 16 135950 598.47 924 896 225.7

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