ASTROSAT CZTI

Data Quality Report

Orbit 04896

Creation date: 2024-06-27T14:48:34.277826
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/AS1G05_237T01_9000000620_04896cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04896cztM0_level2_quad_clean.evt
Size (bytes)646,816,32082,635,840
Size616.9 MB 78.8 MB
Events in quadrant A3,598,117509,133
Events in quadrant B4,168,984506,177
Events in quadrant C3,445,384505,019
Events in quadrant D7,877,284469,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154252
B0171501
C0150841
D0286121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7362650.882912%
B73621301.765825%
C7362460.624830%
D7362160421.787558%

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 7607 7363 3 3 0.04% 0.04%
B 7607 7363 12 12 0.16% 0.16%
C 7607 7363 0 0 0.00% 0.00%
D 7607 7362 1193 1193 15.68% 16.20%

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 50 72789 388.48 898 881 185.1
A 13 251 22911 119.01 898 881 185.1
A 15 31 12674 63.71 898 881 185.1
B 15 204 265729 1526.58 904 885 173.5
B 0 219 129772 742.91 904 885 173.5
B 4 80 81667 465.63 904 885 173.5
C 8 128 13420 61.88 871 879 202.7
C 1 16 8887 39.52 871 879 202.7
C 14 67 8096 35.61 871 879 202.7
D 1 52 1564953 8020.1 772 747 195.0
D 2 63 1536764 7875.57 772 747 195.0
D 2 234 329858 1687.44 772 747 195.0

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