ASTROSAT CZTI

Data Quality Report

Orbit 13784

Creation date: 2024-06-27T16:46:04.346262
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/AS1A04_199T01_9000002040_13784cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13784cztM0_level2_quad_clean.evt
Size (bytes)631,163,52090,262,080
Size601.9 MB 86.1 MB
Events in quadrant A4,184,164545,585
Events in quadrant B4,499,841551,653
Events in quadrant C4,200,738542,097
Events in quadrant D5,650,130500,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180155
B0187704
C0180064
D0223954

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85325246.141585%
B85325786.774496%
C85323864.524144%
D85327188.415377%

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 8823 8536 0 0 0.00% 0.00%
B 8823 8536 25 25 0.28% 0.29%
C 8823 8536 0 0 0.00% 0.00%
D 8823 8537 258 258 2.92% 3.02%

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 15 34872 154.83 1069 1043 218.5
A 0 23 13126 55.3 1069 1043 218.5
A 1 162 12608 52.93 1069 1043 218.5
B 3 64 179512 862.47 1064 1033 206.9
B 8 250 64663 307.48 1064 1033 206.9
B 4 80 34220 160.37 1064 1033 206.9
C 3 233 111473 450.62 1049 1052 245.0
C 13 61 7363 25.75 1049 1052 245.0
C 0 207 2892 7.51 1049 1052 245.0
D 13 249 917295 3673.62 1032 1002 249.4
D 1 52 587672 2352.09 1032 1002 249.4
D 5 222 88890 352.36 1032 1002 249.4

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