ASTROSAT CZTI

Data Quality Report

Orbit 44937

Creation date: 2024-06-27T23:08:10.527237
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/AS1A13_017T02_9000006032_44937cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44937cztM0_level2_quad_clean.evt
Size (bytes)502,597,440109,140,480
Size479.3 MB 104.1 MB
Events in quadrant A5,199,468745,972
Events in quadrant B3,772,501765,100
Events in quadrant C3,297,415750,997
Events in quadrant D5,858,588613,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193701
B0150841
C0135872
D0215741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61421752.849235%
B61432213.597591%
C61421001.628134%
D614378412.762494%

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 7312 6143 6 6 0.08% 0.10%
B 7313 6144 68 68 0.93% 1.11%
C 7313 6144 24 24 0.33% 0.39%
D 7313 6144 507 507 6.93% 8.25%

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 2179874 13769.73 763 750 158.3
A 7 16 22808 139.38 763 750 158.3
A 0 243 15406 92.61 763 750 158.3
B 5 172 254209 1726.66 753 731 146.8
B 4 171 164031 1112.38 753 731 146.8
B 0 219 72553 489.24 753 731 146.8
C 14 254 197173 1112.35 757 763 176.6
C 1 3 84255 472.85 757 763 176.6
C 3 233 30022 165.71 757 763 176.6
D 13 249 1234241 6916.78 716 695 178.3
D 1 52 566021 3169.91 716 695 178.3
D 13 171 298077 1667.49 716 695 178.3

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