ASTROSAT CZTI

Data Quality Report

Orbit 20151

Creation date: 2024-06-27T18:11:51.841919
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/AS1A05_180T01_9000002992_20151cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20151cztM0_level2_quad_clean.evt
Size (bytes)529,790,40090,642,240
Size505.2 MB 86.4 MB
Events in quadrant A3,643,077589,414
Events in quadrant B3,615,009586,322
Events in quadrant C3,675,555559,999
Events in quadrant D4,652,169537,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146272
B0146462
C0146132
D0180622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67581622.397159%
B67581271.879254%
C67581582.337970%
D67585828.612015%

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 7663 6759 29 29 0.38% 0.43%
B 7663 6759 9 9 0.12% 0.13%
C 7663 6759 0 0 0.00% 0.00%
D 7663 6759 233 233 3.04% 3.45%

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 14 238 157760 878.37 895 882 178.6
A 11 29 22159 119.13 895 882 178.6
A 10 253 14555 76.56 895 882 178.6
B 4 80 49093 285.34 882 864 169.0
B 7 220 40479 234.38 882 864 169.0
B 0 183 28336 162.54 882 864 169.0
C 3 233 240756 1225.74 846 855 195.7
C 14 238 135039 685.59 846 855 195.7
C 13 61 5707 24.79 846 855 195.7
D 1 52 1168293 5737.21 842 820 203.5
D 12 238 159145 778.04 842 820 203.5
D 11 176 77580 377.22 842 820 203.5

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