ASTROSAT CZTI

Data Quality Report

Orbit 21228

Creation date: 2024-06-27T18:25:52.053807
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/AS1A05_062T02_9000003138_21228cztM0_level2.evt modeM0/AS1A05_062T02_9000003138_21228cztM0_level2_quad_clean.evt
Size (bytes)741,038,40081,432,000
Size706.7 MB 77.7 MB
Events in quadrant A7,037,366457,405
Events in quadrant B4,690,851509,881
Events in quadrant C3,563,563514,980
Events in quadrant D6,655,916473,340

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260692
B0183022
C0150922
D0248012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7313117015.998906%
B73135096.960208%
C73131702.324627%
D73137159.777109%

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 8693 7313 991 991 11.40% 13.55%
B 8693 7313 331 331 3.81% 4.53%
C 8693 7314 0 0 0.00% 0.00%
D 8693 7314 402 402 4.62% 5.50%

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 15 236 3623886 21701.74 825 808 166.9
A 11 47 166552 992.78 825 808 166.9
A 5 16 34777 203.47 825 808 166.9
B 0 189 1059955 6201.19 888 866 170.8
B 0 228 37151 212.45 888 866 170.8
B 0 197 32657 186.14 888 866 170.8
C 14 238 135551 653.86 871 877 206.0
C 6 14 34457 163.03 871 877 206.0
C 13 61 5973 24.74 871 877 206.0
D 13 174 1887219 8876.2 858 831 212.5
D 1 52 1023935 4814.1 858 831 212.5
D 13 153 244135 1144.84 858 831 212.5

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