ASTROSAT CZTI

Data Quality Report

Orbit 26016

Creation date: 2024-06-27T19:23:53.014467
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_068T01_9000003760_26016cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26016cztM0_level2_quad_clean.evt
Size (bytes)729,633,600108,380,160
Size695.8 MB 103.4 MB
Events in quadrant A5,257,107728,601
Events in quadrant B3,821,389736,194
Events in quadrant C3,579,822700,127
Events in quadrant D8,924,968588,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205730
B0162260
C0156720
D0317920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75953124.107966%
B7596530.697736%
C7596861.132175%
D7596176623.249078%

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 7865 7597 231 231 2.94% 3.04%
B 7866 7598 0 0 0.00% 0.00%
C 7866 7598 0 0 0.00% 0.00%
D 7866 7598 1433 1433 18.22% 18.86%

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 1718669 9284.41 917 897 185.0
A 13 254 11218 55.78 917 897 185.0
A 3 137 8473 40.95 917 897 185.0
B 10 245 90244 504.34 916 892 177.2
B 15 222 58443 324.84 916 892 177.2
B 0 229 37029 203.97 916 892 177.2
C 14 238 140735 687.05 873 877 203.6
C 14 225 19105 89.55 873 877 203.6
C 3 233 14560 67.22 873 877 203.6
D 12 2 4451491 21621.12 790 769 205.9
D 1 52 1260484 6119.56 790 769 205.9
D 12 233 169354 818.97 790 769 205.9

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