ASTROSAT CZTI

Data Quality Report

Orbit 25851

Creation date: 2024-06-27T19:22:05.401906
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_9000003756_25851cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25851cztM0_level2_quad_clean.evt
Size (bytes)633,723,84096,886,080
Size604.4 MB 92.4 MB
Events in quadrant A3,180,407677,599
Events in quadrant B3,227,613672,602
Events in quadrant C6,756,641573,875
Events in quadrant D5,622,787591,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131550
B0133150
C0243910
D0207510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5991641.068269%
B5992681.134846%
C599186814.488399%
D599179913.336672%

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 7291 5992 3 3 0.04% 0.05%
B 7292 5993 0 0 0.00% 0.00%
C 7291 5992 548 548 7.52% 9.15%
D 7291 5992 777 777 10.66% 12.97%

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 41672 253.85 813 800 161.0
A 13 254 9680 55.15 813 800 161.0
A 0 226 7204 39.77 813 800 161.0
B 15 33 54701 361.24 794 778 149.3
B 0 229 21271 137.29 794 778 149.3
B 4 171 17691 113.3 794 778 149.3
C 7 87 3831093 23294.5 713 720 164.4
C 14 238 115484 697.94 713 720 164.4
C 3 233 14582 84.3 713 720 164.4
D 1 52 2395504 13574.92 743 726 176.4
D 12 233 347705 1966.87 743 726 176.4
D 14 35 29439 162.76 743 726 176.4

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