ASTROSAT CZTI

Data Quality Report

Orbit 17305

Creation date: 2024-06-27T17:34:46.573846
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_010T02_9000002556_17305cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17305cztM0_level2_quad_clean.evt
Size (bytes)1,245,170,880206,467,200
Size1.2 GB 196.9 MB
Events in quadrant A8,431,0681,277,526
Events in quadrant B8,382,8421,282,826
Events in quadrant C8,405,1731,223,131
Events in quadrant D11,255,1631,210,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375153
B0371893
C0371633
D0463558

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182761390.760560%
B182771580.864474%
C182772061.127100%
D182766353.474502%

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 20206 18278 17 17 0.08% 0.09%
B 20207 18279 1 1 0.00% 0.01%
C 20207 18278 0 0 0.00% 0.00%
D 20206 18277 405 405 2.00% 2.22%

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 4 2 135370 310.62 2138 2092 429.1
A 0 23 66381 149.83 2138 2092 429.1
A 0 226 22143 46.73 2138 2092 429.1
B 12 111 51190 119.37 2135 2078 411.4
B 11 111 45057 104.47 2135 2078 411.4
B 14 111 39468 90.88 2135 2078 411.4
C 14 238 315916 652.96 2052 2066 480.7
C 3 233 89721 182.37 2052 2066 480.7
C 13 61 14560 25.99 2052 2066 480.7
D 5 222 2100065 4202.68 2056 1995 499.2
D 11 176 994345 1987.79 2056 1995 499.2
D 2 152 167123 330.77 2056 1995 499.2

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