ASTROSAT CZTI

Data Quality Report

Orbit 25357

Creation date: 2024-06-27T19:16:44.026060
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_059T01_9000003706_25357cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25357cztM0_level2_quad_clean.evt
Size (bytes)504,195,84071,398,080
Size480.8 MB 68.1 MB
Events in quadrant A3,811,010439,767
Events in quadrant B3,378,428444,939
Events in quadrant C3,292,932419,071
Events in quadrant D4,349,717408,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155020
B0139270
C0137270
D0171470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454661.022622%
B6454761.177564%
C6454861.332507%
D64551312.029435%

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 7609 6454 0 0 0.00% 0.00%
B 7609 6454 3 3 0.04% 0.05%
C 7609 6454 0 0 0.00% 0.00%
D 7610 6455 75 75 0.99% 1.16%

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 6 16 507593 2991.86 852 838 169.4
A 15 173 17321 97.32 852 838 169.4
A 13 254 9857 53.25 852 838 169.4
B 3 112 28394 174.57 844 825 157.9
B 0 229 22746 138.8 844 825 157.9
B 12 111 19087 115.64 844 825 157.9
C 14 238 131000 699.57 802 806 186.1
C 3 233 31853 166.82 802 806 186.1
C 13 61 5686 26.22 802 806 186.1
D 9 35 582622 2968.97 815 792 196.0
D 1 52 277949 1414.28 815 792 196.0
D 8 195 203144 1032.56 815 792 196.0

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