ASTROSAT CZTI

Data Quality Report

Orbit 15940

Creation date: 2024-06-27T17:15:23.117928
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/AS1A04_104T03_9000002348_15940cztM0_level2.evt modeM0/AS1A04_104T03_9000002348_15940cztM0_level2_quad_clean.evt
Size (bytes)508,674,24094,740,480
Size485.1 MB 90.4 MB
Events in quadrant A3,947,739589,529
Events in quadrant B3,990,785605,553
Events in quadrant C3,601,341581,848
Events in quadrant D3,360,971575,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165812
B0165401
C0154161
D0153501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74342052.757600%
B74341562.098467%
C74341061.425881%
D7434540.726392%

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 7720 7437 81 81 1.05% 1.09%
B 7720 7437 32 32 0.41% 0.43%
C 7720 7438 0 0 0.00% 0.00%
D 7720 7438 3 3 0.04% 0.04%

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 15 239 470215 2583.04 886 868 181.7
A 13 34 37639 202.37 886 868 181.7
A 13 210 17351 90.71 886 868 181.7
B 10 245 304821 1759.74 897 873 172.7
B 4 173 39929 226.12 897 873 172.7
B 3 209 26767 149.91 897 873 172.7
C 14 238 129727 636.76 856 863 202.4
C 3 233 122741 602.24 856 863 202.4
C 13 61 6158 26.16 856 863 202.4
D 2 234 35117 159.51 869 841 214.9
D 10 70 26665 120.18 869 841 214.9
D 13 172 13280 57.89 869 841 214.9

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