ASTROSAT CZTI

Data Quality Report

Orbit 17862

Creation date: 2024-06-27T17:41:47.291915
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_085T01_9000002658_17862cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17862cztM0_level2_quad_clean.evt
Size (bytes)484,295,04095,601,600
Size461.9 MB 91.2 MB
Events in quadrant A3,064,277633,027
Events in quadrant B3,174,397650,805
Events in quadrant C3,172,473615,617
Events in quadrant D4,826,193554,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131902
B0133432
C0132222
D0185972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6319210.332331%
B6319490.775439%
C6319530.838740%
D63195208.229150%

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 7684 6320 0 0 0.00% 0.00%
B 7684 6320 0 0 0.00% 0.00%
C 7684 6320 0 0 0.00% 0.00%
D 7684 6320 453 453 5.90% 7.17%

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 0 226 6804 37.73 797 782 159.6
A 3 137 5979 32.56 797 782 159.6
A 12 194 5479 29.43 797 782 159.6
B 12 111 17906 113.89 808 791 150.3
B 11 111 15041 94.82 808 791 150.3
B 14 111 13538 84.82 808 791 150.3
C 14 238 122614 683.85 769 776 178.2
C 5 218 33445 183.36 769 776 178.2
C 5 219 6949 34.65 769 776 178.2
D 7 238 1860062 9481.44 729 714 196.1
D 1 52 96314 487.5 729 714 196.1
D 2 14 47813 240.17 729 714 196.1

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