ASTROSAT CZTI

Data Quality Report

Orbit 26842

Creation date: 2024-06-27T19:33:33.881808
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_145T01_9000003866_26842cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26842cztM0_level2_quad_clean.evt
Size (bytes)839,335,68085,668,480
Size800.5 MB 81.7 MB
Events in quadrant A5,980,349542,367
Events in quadrant B6,589,916523,332
Events in quadrant C3,801,480528,859
Events in quadrant D8,532,973468,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228290
B0246100
C0157970
D0304380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76263744.904275%
B76267449.756098%
C76261431.875164%
D7626170722.383950%

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 7961 7626 156 156 1.96% 2.05%
B 7961 7627 391 391 4.91% 5.13%
C 7961 7626 2 2 0.03% 0.03%
D 7961 7626 1356 1356 17.03% 17.78%

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 0 13 2271816 11626.72 960 941 195.3
A 13 254 12114 57.2 960 941 195.3
A 3 137 8757 40.02 960 941 195.3
B 3 64 1544352 8715.77 922 899 177.1
B 0 189 1322128 7460.89 922 899 177.1
B 7 205 46034 254.87 922 899 177.1
C 14 238 146590 660.24 927 934 220.6
C 15 208 24802 108.19 927 934 220.6
C 8 128 11686 48.74 927 934 220.6
D 1 52 4992188 24480.75 842 821 203.9
D 2 250 239003 1168.19 842 821 203.9
D 7 80 90539 440.03 842 821 203.9

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