ASTROSAT CZTI

Data Quality Report

Orbit 15652

Creation date: 2024-06-27T17:11:40.130508
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_086T01_9000002316_15652cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15652cztM0_level2_quad_clean.evt
Size (bytes)549,973,44093,104,640
Size524.5 MB 88.8 MB
Events in quadrant A3,088,597606,083
Events in quadrant B3,250,996608,616
Events in quadrant C3,212,722596,872
Events in quadrant D6,644,048535,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138312
B0140281
C0139471
D0242651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6774390.575731%
B6774400.590493%
C6774630.930027%
D677490913.418955%

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 7110 6775 1 1 0.01% 0.01%
B 7110 6776 0 0 0.00% 0.00%
C 7110 6776 0 0 0.00% 0.00%
D 7109 6775 961 961 13.52% 14.18%

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 0 226 7014 38.4 800 783 162.2
A 12 194 6017 32.26 800 783 162.2
A 3 137 5365 28.24 800 783 162.2
B 3 64 38382 245.94 797 777 152.9
B 4 173 30564 194.81 797 777 152.9
B 0 189 20267 127.47 797 777 152.9
C 14 238 116928 652.03 763 768 178.2
C 3 233 60700 336.41 763 768 178.2
C 7 247 35465 194.76 763 768 178.2
D 1 52 3721802 20792.14 735 714 179.0
D 2 234 28179 153.46 735 714 179.0
D 10 70 23747 128.7 735 714 179.0

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