ASTROSAT CZTI

Data Quality Report

Orbit 17230

Creation date: 2024-06-27T17:33:52.910360
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_185T04_9000002548_17230cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17230cztM0_level2_quad_clean.evt
Size (bytes)552,827,52089,303,040
Size527.2 MB 85.2 MB
Events in quadrant A3,710,308548,711
Events in quadrant B3,985,640548,799
Events in quadrant C3,803,984528,296
Events in quadrant D4,698,436521,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164882
B0171312
C0166012
D0197402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80061251.561329%
B80061762.198351%
C80061652.060954%
D80071792.235544%

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 8671 8008 0 0 0.00% 0.00%
B 8671 8007 2 2 0.02% 0.02%
C 8671 8008 1 1 0.01% 0.01%
D 8672 8009 68 68 0.78% 0.85%

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 0 226 8733 39.53 962 939 197.1
A 0 23 7565 33.61 962 939 197.1
A 3 137 7371 32.62 962 939 197.1
B 0 189 109613 576.97 963 936 188.4
B 0 197 36924 191.06 963 936 188.4
B 12 6 26633 136.43 963 936 188.4
C 14 238 140207 630.91 927 931 220.8
C 3 233 43301 191.93 927 931 220.8
C 5 112 7043 27.69 927 931 220.8
D 5 222 613412 2684.18 934 905 228.2
D 1 52 316673 1383.79 934 905 228.2
D 13 189 125310 545.18 934 905 228.2

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