ASTROSAT CZTI

Data Quality Report

Orbit 15965

Creation date: 2024-06-27T17:15:47.468127
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/AS1T02_087T01_9000002352_15965cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15965cztM0_level2_quad_clean.evt
Size (bytes)436,475,52088,980,480
Size416.3 MB 84.9 MB
Events in quadrant A3,159,468582,877
Events in quadrant B3,424,870591,986
Events in quadrant C3,105,935557,045
Events in quadrant D3,116,619539,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132222
B0142021
C0128841
D0132541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6064851.401715%
B6064891.467678%
C60641131.863456%
D6064490.808047%

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 7400 6066 7 7 0.09% 0.12%
B 7400 6065 4 4 0.05% 0.07%
C 7400 6066 0 0 0.00% 0.00%
D 7400 6066 3 3 0.04% 0.05%

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 15 239 75202 459.5 798 785 162.0
A 13 248 15817 92.82 798 785 162.0
A 0 226 7295 40.2 798 785 162.0
B 0 219 69467 454.72 799 781 151.1
B 0 229 45957 299.08 799 781 151.1
B 0 189 43958 285.84 799 781 151.1
C 14 238 116878 662.14 755 762 175.4
C 3 233 42067 235.54 755 762 175.4
C 13 61 5588 27.52 755 762 175.4
D 12 110 100549 538.41 762 741 185.4
D 2 152 86444 462.32 762 741 185.4
D 2 234 19145 99.28 762 741 185.4

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