ASTROSAT CZTI

Data Quality Report

Orbit 25051

Creation date: 2024-06-27T19:13:14.599156
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_206T01_9000003672_25051cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25051cztM0_level2_quad_clean.evt
Size (bytes)474,272,64080,043,840
Size452.3 MB 76.3 MB
Events in quadrant A2,929,511516,310
Events in quadrant B3,063,965521,633
Events in quadrant C3,066,600489,898
Events in quadrant D4,893,386474,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125871
B0130441
C0129981
D0187761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6042330.546177%
B6043470.777759%
C60431222.018865%
D60431662.746980%

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 7072 6043 1 1 0.01% 0.02%
B 7073 6044 10 10 0.14% 0.17%
C 7073 6044 45 45 0.64% 0.74%
D 7073 6044 108 108 1.53% 1.79%

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 10 17 96246 646.64 733 718 147.7
A 13 254 10528 66.4 733 718 147.7
A 3 137 6547 39.46 733 718 147.7
B 0 190 84121 600.26 731 713 139.0
B 5 172 78256 558.05 731 713 139.0
B 0 229 29443 206.76 731 713 139.0
C 0 239 146562 887.62 700 702 164.3
C 14 238 110206 666.38 700 702 164.3
C 7 247 38291 228.75 700 702 164.3
D 7 238 898010 5174.42 706 684 173.4
D 8 195 866719 4993.98 706 684 173.4
D 1 3 132944 762.68 706 684 173.4

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