ASTROSAT CZTI

Data Quality Report

Orbit 26869

Creation date: 2024-06-27T19:33:52.931488
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_224T01_9000003872_26869cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26869cztM0_level2_quad_clean.evt
Size (bytes)575,403,84092,784,960
Size548.7 MB 88.5 MB
Events in quadrant A3,929,595577,746
Events in quadrant B4,112,528589,547
Events in quadrant C3,631,708575,800
Events in quadrant D5,249,577550,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162910
B0167160
C0153970
D0204720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74191962.641865%
B74192493.356247%
C74192243.019275%
D74194836.510311%

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 7729 7420 28 28 0.36% 0.38%
B 7729 7420 60 60 0.78% 0.81%
C 7729 7421 1 1 0.01% 0.01%
D 7729 7422 296 296 3.83% 3.99%

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 13 332050 1776.62 926 905 186.4
A 4 2 18166 92.61 926 905 186.4
A 12 96 11641 57.6 926 905 186.4
B 0 190 344095 1954.29 920 898 175.6
B 10 246 75130 422.71 920 898 175.6
B 0 189 62069 348.33 920 898 175.6
C 14 238 143572 675.31 894 897 211.3
C 13 61 6028 24.29 894 897 211.3
C 15 208 5218 20.45 894 897 211.3
D 1 52 741518 3545.37 885 864 208.9
D 7 80 636298 3041.7 885 864 208.9
D 11 176 167093 795.71 885 864 208.9

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