ASTROSAT CZTI

Data Quality Report

Orbit 08911

Creation date: 2024-06-27T15:38:53.403071
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/AS1A03_092T01_9000001240_08911cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08911cztM0_level2_quad_clean.evt
Size (bytes)488,900,16073,627,200
Size466.3 MB 70.2 MB
Events in quadrant A3,716,887445,881
Events in quadrant B4,082,257422,771
Events in quadrant C3,131,222442,210
Events in quadrant D3,402,670432,927

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155193
B0166632
C0141822
D0149562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6965911.306533%
B69654095.872218%
C6965560.804020%
D6965640.918880%

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 8820 6967 37 37 0.42% 0.53%
B 8819 6965 211 211 2.39% 3.03%
C 8820 6966 0 0 0.00% 0.00%
D 8820 6966 10 10 0.11% 0.14%

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 8 5 326847 1954.58 821 802 166.8
A 5 16 165231 985.72 821 802 166.8
A 15 174 40235 236.39 821 802 166.8
B 10 16 880005 5739.47 803 784 153.2
B 0 214 27059 171.52 803 784 153.2
B 0 219 21611 135.96 803 784 153.2
C 13 61 5961 27.62 803 805 186.7
C 3 202 2060 6.72 803 805 186.7
C -1 -1 -1 -1.0 803 805 186.7
D 1 52 155515 757.32 797 779 204.3
D 2 14 65799 318.22 797 779 204.3
D 8 195 44630 214.62 797 779 204.3

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