ASTROSAT CZTI

Data Quality Report

Orbit 23675

Creation date: 2024-06-27T18:57:28.506838
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/AS1A07_046T01_9000003498_23675cztM0_level2.evt modeM0/AS1A07_046T01_9000003498_23675cztM0_level2_quad_clean.evt
Size (bytes)527,541,12084,810,240
Size503.1 MB 80.9 MB
Events in quadrant A3,466,164524,506
Events in quadrant B3,648,418532,301
Events in quadrant C3,525,718514,450
Events in quadrant D4,853,024500,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148352
B0154313
C0149622
D0192692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7116690.969646%
B7116921.292861%
C71161271.784711%
D71163204.496908%

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 8811 7116 0 0 0.00% 0.00%
B 8811 7116 7 7 0.08% 0.10%
C 8811 7116 0 0 0.00% 0.00%
D 8811 7116 188 188 2.13% 2.64%

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 13 254 12751 64.69 899 879 183.5
A 3 137 7967 38.62 899 879 183.5
A 0 226 7811 37.77 899 879 183.5
B 0 189 56817 321.67 893 871 173.9
B 15 33 34392 192.73 893 871 173.9
B 12 111 20857 114.91 893 871 173.9
C 14 238 135604 659.86 866 871 204.2
C 10 9 7662 33.26 866 871 204.2
C 13 61 6033 25.28 866 871 204.2
D 1 52 541724 2561.1 868 845 211.2
D 12 233 539147 2548.9 868 845 211.2
D 15 0 272997 1288.66 868 845 211.2

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