ASTROSAT CZTI

Data Quality Report

Orbit 28498

Creation date: 2024-06-27T19:52:38.505742
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/AS1A10_123T03_9000004096_28498cztM0_level2.evt modeM0/AS1A10_123T03_9000004096_28498cztM0_level2_quad_clean.evt
Size (bytes)548,196,48065,816,640
Size522.8 MB 62.8 MB
Events in quadrant A3,176,533394,783
Events in quadrant B3,403,470400,436
Events in quadrant C3,213,136385,877
Events in quadrant D6,383,423373,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133541
B0141231
C0133211
D0231101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274480.765062%
B6274560.892573%
C6274861.370736%
D6275105316.780876%

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 7369 6274 2 2 0.03% 0.03%
B 7369 6274 10 10 0.14% 0.16%
C 7369 6274 0 0 0.00% 0.00%
D 7370 6275 996 996 13.51% 15.87%

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 12 96 29078 173.21 815 800 163.3
A 13 254 11878 67.85 815 800 163.3
A 3 137 7615 41.74 815 800 163.3
B 0 230 189360 1246.41 801 782 151.3
B 5 255 35436 229.04 801 782 151.3
B 15 33 28890 185.78 801 782 151.3
C 14 238 128600 702.37 781 785 182.0
C 3 233 28148 150.37 781 785 182.0
C 7 247 13368 69.15 781 785 182.0
D 8 195 1991008 10930.98 755 735 182.1
D 1 52 869129 4769.39 755 735 182.1
D 12 233 367991 2017.04 755 735 182.1

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