ASTROSAT CZTI

Data Quality Report

Orbit 20754

Creation date: 2024-06-27T18:19:12.587459
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_013T01_9000003070_20754cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20754cztM0_level2_quad_clean.evt
Size (bytes)1,295,988,480245,344,320
Size1.2 GB 234.0 MB
Events in quadrant A8,317,1391,618,998
Events in quadrant B8,565,6871,613,994
Events in quadrant C8,472,0211,562,699
Events in quadrant D12,765,2031,482,021

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0354193
B0360243
C0355123
D0491375

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167251390.831091%
B167251941.159940%
C167252271.357250%
D1672410446.242526%

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 20000 16727 17 17 0.09% 0.10%
B 20000 16727 32 32 0.16% 0.19%
C 20000 16726 0 0 0.00% 0.00%
D 19999 16725 771 771 3.86% 4.61%

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 5 16 187927 443.47 2115 2073 419.1
A 0 226 18415 38.99 2115 2073 419.1
A 3 137 16877 35.32 2115 2073 419.1
B 7 220 170848 435.4 2085 2035 387.7
B 0 197 79082 198.72 2085 2035 387.7
B 12 111 46583 114.9 2085 2035 387.7
C 14 238 321405 691.98 2020 2033 461.5
C 3 233 231856 497.96 2020 2033 461.5
C 7 247 19162 37.11 2020 2033 461.5
D 1 52 3110026 6508.51 2008 1961 477.5
D 1 20 1283007 2682.6 2008 1961 477.5
D 2 165 395698 824.51 2008 1961 477.5

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