ASTROSAT CZTI

Data Quality Report

Orbit 30652

Creation date: 2024-06-27T20:18:10.821936
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/AS1C05_007T01_9000004418_30652cztM0_level2.evt modeM0/AS1C05_007T01_9000004418_30652cztM0_level2_quad_clean.evt
Size (bytes)1,678,962,240190,411,200
Size1.6 GB 181.6 MB
Events in quadrant A8,313,7981,234,495
Events in quadrant B17,372,1501,164,368
Events in quadrant C8,174,1371,173,813
Events in quadrant D15,902,4961,080,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350583
B0629604
C0342823
D0581973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161272111.308365%
B16126297718.460871%
C161262431.506883%
D16126191111.850428%

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 17977 16130 98 98 0.55% 0.61%
B 17976 16129 2195 2195 12.21% 13.61%
C 17976 16129 9 9 0.05% 0.06%
D 17976 16129 1958 1958 10.89% 12.14%

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 13 382644 957.97 1986 1945 397.4
A 12 96 240198 599.52 1986 1945 397.4
A 8 192 33592 79.63 1986 1945 397.4
B 6 36 5799102 16420.71 1831 1782 353.0
B 6 159 4294580 12159.2 1831 1782 353.0
B 12 111 44387 120.68 1831 1782 353.0
C 3 233 311139 697.11 1889 1903 443.6
C 14 238 303520 679.93 1889 1903 443.6
C 0 10 105465 233.46 1889 1903 443.6
D 8 195 6037952 12838.26 1841 1803 470.2
D 10 253 1636403 3476.62 1841 1803 470.2
D 12 227 926977 1967.75 1841 1803 470.2

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