ASTROSAT CZTI

Data Quality Report

Orbit 37067

Creation date: 2024-06-27T21:35:08.353415
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/AS1A09_138T04_9000005282_37067cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37067cztM0_level2_quad_clean.evt
Size (bytes)91,059,84021,741,120
Size86.8 MB 20.7 MB
Events in quadrant A641,223146,112
Events in quadrant B690,789146,702
Events in quadrant C580,359145,737
Events in quadrant D769,593137,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025402
B027281
C023091
D029911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107670.650558%
B1076413.810409%
C107650.464684%
D1076232.137546%

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 1076 1076 4 4 0.37% 0.37%
B 1076 1076 31 31 2.88% 2.88%
C 1076 1076 4 4 0.37% 0.37%
D 1076 1076 22 22 2.04% 2.04%

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 10 83 89044 3169.08 131 128 28.1
A 7 3 35899 1274.93 131 128 28.1
A 9 143 6541 228.57 131 128 28.1
B 5 184 128237 4936.39 126 122 26.0
B 5 172 35287 1354.94 126 122 26.0
B 0 229 18548 709.97 126 122 26.0
C 15 214 50586 1611.27 127 128 31.3
C 0 10 31871 1013.65 127 128 31.3
C 2 16 920 25.29 127 128 31.3
D 1 47 87247 2773.41 127 124 31.4
D 12 17 54316 1725.11 127 124 31.4
D 4 239 26970 854.59 127 124 31.4

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