ASTROSAT CZTI

Data Quality Report

Orbit 20050

Creation date: 2024-06-27T18:10:36.192983
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/AS1T03_117T01_9000002988_20050cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20050cztM0_level2_quad_clean.evt
Size (bytes)576,285,12099,066,240
Size549.6 MB 94.5 MB
Events in quadrant A3,718,616643,176
Events in quadrant B3,778,647646,024
Events in quadrant C3,739,473613,681
Events in quadrant D5,720,915588,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155322
B0156592
C0154862
D0216413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297801.096341%
B72981351.849822%
C72981782.439024%
D72974486.139509%

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 9202 7299 1 1 0.01% 0.01%
B 9203 7300 5 5 0.05% 0.07%
C 9203 7300 0 0 0.00% 0.00%
D 9202 7299 350 350 3.80% 4.80%

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 14 238 35125 179.37 949 931 190.6
A 14 254 21657 108.72 949 931 190.6
A 11 29 12457 60.46 949 931 190.6
B 0 198 54904 298.19 940 918 181.0
B 4 80 31406 168.4 940 918 181.0
B 12 111 22385 118.57 940 918 181.0
C 14 238 141727 657.85 910 917 214.0
C 4 254 34167 155.34 910 917 214.0
C 3 233 9084 38.16 910 917 214.0
D 1 52 1881662 8601.22 908 885 218.7
D 2 184 338482 1543.91 908 885 218.7
D 15 145 38369 171.42 908 885 218.7

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