ASTROSAT CZTI

Data Quality Report

Orbit 25157

Creation date: 2024-06-27T19:14:40.922809
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/AS1A07_018T09_9000003682_25157cztM0_level2.evt modeM0/AS1A07_018T09_9000003682_25157cztM0_level2_quad_clean.evt
Size (bytes)504,731,52093,024,000
Size481.3 MB 88.7 MB
Events in quadrant A3,396,575604,089
Events in quadrant B3,457,479617,575
Events in quadrant C3,880,911594,114
Events in quadrant D4,136,916575,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141060
B0142640
C0159150
D0164640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6106701.146413%
B6106811.326564%
C61061792.931543%
D61061863.046184%

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 7451 6106 0 0 0.00% 0.00%
B 7451 6106 0 0 0.00% 0.00%
C 7451 6106 1 1 0.01% 0.02%
D 7451 6106 115 115 1.54% 1.88%

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 15 192 12753 68.15 877 861 174.5
A 13 254 9967 52.18 877 861 174.5
A 0 226 7519 38.15 877 861 174.5
B 12 111 18966 111.27 876 859 162.7
B 11 111 16983 99.08 876 859 162.7
B 0 190 16332 95.08 876 859 162.7
C 7 247 226054 1138.31 858 866 197.8
C 14 238 139442 700.49 858 866 197.8
C 7 87 135974 682.96 858 866 197.8
D 1 52 738637 3578.08 859 837 206.2
D 8 195 107632 517.92 859 837 206.2
D 12 235 59099 282.55 859 837 206.2

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