ASTROSAT CZTI

Data Quality Report

Orbit 38227

Creation date: 2024-06-27T21:49:59.569212
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/AS1A07_145T01_9000005370_38227cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38227cztM0_level2_quad_clean.evt
Size (bytes)333,682,56094,651,200
Size318.2 MB 90.3 MB
Events in quadrant A2,882,472639,212
Events in quadrant B3,007,126642,052
Events in quadrant C2,807,333621,602
Events in quadrant D3,226,387578,339

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118582
B0126351
C0117311
D0132971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5501330.599891%
B55011432.599527%
C5501140.254499%
D5501330.599891%

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 7232 5502 16 16 0.22% 0.29%
B 7232 5502 96 96 1.33% 1.74%
C 7232 5502 14 14 0.19% 0.25%
D 7232 5502 35 35 0.48% 0.64%

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 10 83 357857 2857.91 617 604 125.0
A 9 143 78950 626.74 617 604 125.0
A 12 189 34811 273.64 617 604 125.0
B 5 172 424075 3631.4 610 593 116.6
B 0 229 118099 1007.62 610 593 116.6
B 0 183 20501 170.71 610 593 116.6
C 15 214 224020 1583.82 607 611 141.1
C 9 236 127841 901.98 607 611 141.1
C 15 159 26551 183.9 607 611 141.1
D 7 223 276515 1851.83 608 591 149.0
D 12 235 219393 1468.46 608 591 149.0
D 10 203 100272 669.0 608 591 149.0

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