ASTROSAT CZTI

Data Quality Report

Orbit 15979

Creation date: 2024-06-27T17:16:00.404961
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/AS1T02_100T01_9000002354_15979cztM0_level2.evt modeM0/AS1T02_100T01_9000002354_15979cztM0_level2_quad_clean.evt
Size (bytes)431,078,40088,675,200
Size411.1 MB 84.6 MB
Events in quadrant A2,897,099585,928
Events in quadrant B3,551,187588,940
Events in quadrant C2,897,268559,501
Events in quadrant D3,311,421541,510

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123172
B0144161
C0122681
D0138141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5865430.733163%
B5865811.381074%
C5865641.091219%
D58651352.301790%

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 7206 5867 0 0 0.00% 0.00%
B 7206 5867 23 23 0.32% 0.39%
C 7206 5867 0 0 0.00% 0.00%
D 7206 5867 112 112 1.55% 1.91%

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 9 143 8742 53.36 748 735 150.1
A 0 226 6742 40.03 748 735 150.1
A 12 194 5687 33.0 748 735 150.1
B 0 189 269467 1925.26 747 732 139.6
B 7 220 118431 843.21 747 732 139.6
B 0 190 55965 395.7 747 732 139.6
C 14 238 108818 667.08 699 705 162.1
C 3 233 35445 214.35 699 705 162.1
C 10 69 9253 52.74 699 705 162.1
D 12 218 299965 1738.3 708 687 172.2
D 7 55 129052 745.58 708 687 172.2
D 2 152 85262 491.24 708 687 172.2

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