ASTROSAT CZTI

Data Quality Report

Orbit 11207

Creation date: 2024-06-27T16:09:46.324251
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/AS1A04_171T01_9000001634_11207cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11207cztM0_level2_quad_clean.evt
Size (bytes)3,460,046,400420,943,680
Size3.2 GB 401.4 MB
Events in quadrant A38,699,7612,324,909
Events in quadrant B21,420,0102,697,388
Events in quadrant C17,226,1032,689,717
Events in quadrant D24,942,1032,483,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07582
B07582
C07582
D07580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01413631117
B088103146
C076870153
D099653119

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37086725319.557245%
B3715314723.961995%
C371434681.259995%
D3716122366.017061%

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 43846 37108 5312 5312 12.12% 14.31%
B 43846 37198 470 470 1.07% 1.26%
C 43846 37185 14 14 0.03% 0.04%
D 43846 37197 1460 1460 3.33% 3.93%

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 15 239 18074099 22159.38 4027 3937 815.5
A 8 15 3016196 3693.92 4027 3937 815.5
A 8 5 1570652 1921.26 4027 3937 815.5
B 4 239 3250621 3860.76 4451 4340 840.8
B 4 80 229574 267.87 4451 4340 840.8
B 15 204 189738 220.49 4451 4340 840.8
C 1 3 90048 84.48 4386 4413 1013.7
C 13 61 31876 27.09 4386 4413 1013.7
C 12 4 22018 17.37 4386 4413 1013.7
D 1 52 3189514 3160.1 4231 4121 1008.0
D 12 157 1542616 1526.28 4231 4121 1008.0
D 2 14 814541 803.98 4231 4121 1008.0

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