ASTROSAT CZTI

Data Quality Report

Orbit 29736

Creation date: 2024-06-27T20:07:17.740390
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_007T01_9000004276_29736cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29736cztM0_level2_quad_clean.evt
Size (bytes)900,339,840106,833,600
Size858.6 MB 101.9 MB
Events in quadrant A3,743,947702,804
Events in quadrant B6,029,971705,337
Events in quadrant C4,488,074691,835
Events in quadrant D12,485,440598,220

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161722
B0236482
C0180922
D0424792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7716881.140487%
B77162673.460342%
C77162813.641783%
D7717233430.244914%

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 7821 7717 0 0 0.00% 0.00%
B 7821 7716 2 2 0.03% 0.03%
C 7821 7717 32 32 0.41% 0.41%
D 7822 7718 2194 2194 28.05% 28.43%

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 9 143 20123 98.48 958 936 194.8
A 12 16 18949 92.46 958 936 194.8
A 13 254 14567 69.96 958 936 194.8
B 6 159 2205250 11829.31 950 923 186.3
B 12 111 23209 119.6 950 923 186.3
B 5 255 22245 114.42 950 923 186.3
C 3 233 546553 2485.61 929 936 219.5
C 14 238 154122 697.85 929 936 219.5
C 15 208 83328 375.35 929 936 219.5
D 8 195 6953961 34358.48 846 825 202.4
D 7 80 2105209 10398.68 846 825 202.4
D 2 250 141192 693.61 846 825 202.4

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