ASTROSAT CZTI

Data Quality Report

Orbit 09206

Creation date: 2024-06-27T15:42:41.617518
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/AS1C02_042T02_9000001284_09206cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09206cztM0_level2_quad_clean.evt
Size (bytes)491,204,16063,573,120
Size468.4 MB 60.6 MB
Events in quadrant A3,933,966376,063
Events in quadrant B3,219,217389,434
Events in quadrant C3,022,939375,215
Events in quadrant D4,285,459357,102

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155893
B0132002
C0126955
D0169142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61221071.747795%
B6122390.637047%
C6121100.163372%
D61222494.067298%

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 7472 6123 83 83 1.11% 1.36%
B 7472 6123 3 3 0.04% 0.05%
C 7471 6122 0 0 0.00% 0.00%
D 7471 6122 237 237 3.17% 3.87%

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 734423 4650.8 781 767 157.7
A 1 162 117500 740.0 781 767 157.7
A 1 178 24506 150.49 781 767 157.7
B 4 80 54102 355.96 790 774 149.8
B 0 187 22463 144.77 790 774 149.8
B 0 168 21466 138.12 790 774 149.8
C 3 233 64942 368.47 757 763 174.2
C 13 61 5782 28.82 757 763 174.2
C 8 222 2993 12.8 757 763 174.2
D 1 52 581317 3046.26 735 717 190.6
D 9 64 554936 2907.84 735 717 190.6
D 4 95 232973 1218.59 735 717 190.6

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