ASTROSAT CZTI

Data Quality Report

Orbit 16845

Creation date: 2024-06-27T17:28:32.022057
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_056T01_9000002498_16845cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16845cztM0_level2_quad_clean.evt
Size (bytes)469,342,08086,385,600
Size447.6 MB 82.4 MB
Events in quadrant A3,119,069549,824
Events in quadrant B3,288,784566,584
Events in quadrant C3,412,489533,795
Events in quadrant D3,960,661520,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132303
B0134302
C0142042
D0158792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376390.611669%
B6376440.690088%
C63761041.631117%
D63761452.274153%

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 7457 6378 2 2 0.03% 0.03%
B 7457 6378 0 0 0.00% 0.00%
C 7457 6378 2 2 0.03% 0.03%
D 7457 6378 71 71 0.95% 1.11%

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 9 143 45377 276.27 800 782 161.4
A 0 226 6789 37.21 800 782 161.4
A 3 137 5789 31.02 800 782 161.4
B 0 229 94696 620.96 799 779 151.2
B 3 64 28501 183.29 799 779 151.2
B 0 214 28076 180.48 799 779 151.2
C 3 233 159927 875.63 779 785 181.7
C 14 238 118664 648.59 779 785 181.7
C 0 207 75210 409.5 779 785 181.7
D 1 52 736896 3912.3 780 757 188.2
D 5 222 232618 1232.25 780 757 188.2
D 15 145 22935 117.87 780 757 188.2

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