ASTROSAT CZTI

Data Quality Report

Orbit 22131

Creation date: 2024-06-27T18:37:13.421789
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/AS1T03_145T01_9000003278_22131cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22131cztM0_level2_quad_clean.evt
Size (bytes)504,648,00071,161,920
Size481.3 MB 67.9 MB
Events in quadrant A3,412,108434,965
Events in quadrant B3,707,112441,745
Events in quadrant C3,503,156425,990
Events in quadrant D4,237,265415,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139662
B0149252
C0144032
D0166722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6252711.135637%
B62521221.951376%
C62521482.367242%
D62521091.743442%

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 7552 6253 0 0 0.00% 0.00%
B 7552 6253 33 33 0.44% 0.53%
C 7552 6253 1 1 0.01% 0.02%
D 7552 6253 24 24 0.32% 0.38%

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 13 254 11199 59.34 883 869 174.1
A 0 226 7554 38.4 883 869 174.1
A 3 137 6821 34.19 883 869 174.1
B 3 64 146061 897.18 877 861 161.8
B 10 246 103079 631.6 877 861 161.8
B 11 51 21850 129.69 877 861 161.8
C 14 238 138078 705.49 850 858 194.5
C 10 22 32806 164.25 850 858 194.5
C 9 54 13152 63.21 850 858 194.5
D 1 52 416702 2010.91 862 841 206.8
D 5 222 305425 1472.82 862 841 206.8
D 11 176 90320 432.68 862 841 206.8

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