ASTROSAT CZTI

Data Quality Report

Orbit 18405

Creation date: 2024-06-27T17:49:29.278494
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_083T01_9000002728_18405cztM0_level2.evt modeM0/AS1T03_083T01_9000002728_18405cztM0_level2_quad_clean.evt
Size (bytes)583,626,240105,589,440
Size556.6 MB 100.7 MB
Events in quadrant A3,542,595691,628
Events in quadrant B4,960,383677,649
Events in quadrant C3,654,371670,396
Events in quadrant D5,014,160641,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154252
B0196762
C0154452
D0197052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74301061.426649%
B74303534.751009%
C74301131.520861%
D74303604.845222%

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 8045 7431 14 14 0.17% 0.19%
B 8045 7431 174 174 2.16% 2.34%
C 8045 7431 0 0 0.00% 0.00%
D 8045 7431 262 262 3.26% 3.53%

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 15 174 87662 474.07 897 878 183.1
A 0 226 7887 38.28 897 878 183.1
A 3 137 6707 31.84 897 878 183.1
B 10 245 1320133 7878.28 880 858 167.5
B 7 220 103086 610.47 880 858 167.5
B 0 189 31133 180.79 880 858 167.5
C 3 233 144840 714.57 860 865 201.5
C 14 238 134465 663.08 860 865 201.5
C 0 207 22346 106.61 860 865 201.5
D 7 238 735902 3536.93 851 826 207.8
D 1 52 670508 3222.28 851 826 207.8
D 12 110 245794 1178.7 851 826 207.8

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