ASTROSAT CZTI

Data Quality Report

Orbit 20471

Creation date: 2024-06-27T18:15:46.776042
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/AS1A05_208T03_9000003026_20471cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20471cztM0_level2_quad_clean.evt
Size (bytes)574,289,28079,254,720
Size547.7 MB 75.6 MB
Events in quadrant A3,373,957493,497
Events in quadrant B3,875,331495,475
Events in quadrant C3,449,211480,098
Events in quadrant D6,202,010425,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149261
B0161831
C0149711
D0234401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72511812.496207%
B72522403.309432%
C72522203.033646%
D725288512.203530%

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 7406 7251 1 1 0.01% 0.01%
B 7407 7252 7 7 0.09% 0.10%
C 7407 7252 0 0 0.00% 0.00%
D 7407 7252 605 605 8.17% 8.34%

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 9 143 18230 98.76 867 845 176.0
A 13 254 9374 48.45 867 845 176.0
A 8 205 8965 46.13 867 845 176.0
B 0 197 145432 869.54 870 848 166.3
B 0 189 144235 862.34 870 848 166.3
B 7 220 82469 490.88 870 848 166.3
C 14 238 128583 648.6 841 844 196.9
C 9 221 31480 155.56 841 844 196.9
C 3 233 6181 27.1 841 844 196.9
D 1 52 1456691 7381.07 813 789 197.2
D 5 222 1163940 5896.89 813 789 197.2
D 7 38 172084 868.42 813 789 197.2

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