ASTROSAT CZTI

Data Quality Report

Orbit 35702

Creation date: 2024-06-27T21:16:56.176978
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/AS1A09_142T03_9000005114_35702cztM0_level2.evt modeM0/AS1A09_142T03_9000005114_35702cztM0_level2_quad_clean.evt
Size (bytes)429,710,40077,604,480
Size409.8 MB 74.0 MB
Events in quadrant A2,848,173476,417
Events in quadrant B3,117,905486,860
Events in quadrant C3,301,107491,131
Events in quadrant D3,333,769471,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123883
B0132152
C0135162
D0141592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A607260.098814%
B6072540.889328%
C6072701.152833%
D6072911.498682%

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 8727 6074 0 0 0.00% 0.00%
B 8727 6074 30 30 0.34% 0.49%
C 8727 6074 62 62 0.71% 1.02%
D 8727 6074 73 73 0.84% 1.20%

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 152378 1071.81 692 678 141.5
A 13 6 8760 57.1 692 678 141.5
A 3 137 7370 47.28 692 678 141.5
B 5 172 250808 1875.29 688 669 133.4
B 5 255 80795 600.7 688 669 133.4
B 10 244 61366 455.05 688 669 133.4
C 0 10 366894 2284.43 682 686 160.3
C 15 214 256957 1598.64 682 686 160.3
C 0 207 8958 51.6 682 686 160.3
D 13 249 319556 1928.79 679 659 165.3
D 10 118 160027 963.91 679 659 165.3
D 12 6 90014 540.45 679 659 165.3

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