ASTROSAT CZTI

Data Quality Report

Orbit 04706

Creation date: 2024-06-27T14:45:52.409578
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_235T01_9000000590_04706cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04706cztM0_level2_quad_clean.evt
Size (bytes)1,524,265,920204,514,560
Size1.4 GB 195.0 MB
Events in quadrant A7,623,9471,317,984
Events in quadrant B8,062,0811,332,497
Events in quadrant C8,141,7771,306,902
Events in quadrant D21,214,5861,089,595

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03468
B03466
C03462
D03464

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035192577
B035919619
C036604578
D0761581562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166311130.679454%
B16624950.571463%
C166261570.944304%
D16528332420.111326%

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 20496 16756 32 32 0.16% 0.19%
B 20496 16754 16 16 0.08% 0.10%
C 20496 16749 113 113 0.55% 0.67%
D 20496 16693 3045 3045 14.86% 18.24%

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 0 118 116826 299.38 1910 1871 384.0
A 15 174 66428 168.13 1910 1871 384.0
A 8 15 35621 87.9 1910 1871 384.0
B 10 16 183888 494.6 1950 1900 368.0
B 14 167 136204 365.0 1950 1900 368.0
B 15 204 102512 273.44 1950 1900 368.0
C 9 68 635827 1451.19 1891 1899 436.8
C 9 247 102909 231.23 1891 1899 436.8
C 13 61 15540 31.23 1891 1899 436.8
D 2 63 10341842 25254.36 1709 1664 409.4
D 1 31 2369944 5784.17 1709 1664 409.4
D 13 235 1344816 3280.45 1709 1664 409.4

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