ASTROSAT CZTI

Data Quality Report

Orbit 27733

Creation date: 2024-06-27T19:43:39.402619
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/AS1T03_263T01_9000003990_27733cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27733cztM0_level2_quad_clean.evt
Size (bytes)478,368,000140,088,960
Size456.2 MB 133.6 MB
Events in quadrant A3,886,367977,219
Events in quadrant B3,467,948998,945
Events in quadrant C3,355,828961,088
Events in quadrant D3,392,731909,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159120
B0140640
C0136420
D0136180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5670621.093474%
B56711041.833892%
C5671971.710457%
D5671661.163816%

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 6985 5670 5 5 0.07% 0.09%
B 6986 5671 18 18 0.26% 0.32%
C 6986 5671 0 0 0.00% 0.00%
D 6986 5672 32 32 0.46% 0.56%

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 586751 3121.95 834 819 187.7
A 0 13 76907 405.41 834 819 187.7
A 13 254 9978 48.8 834 819 187.7
B 4 171 65933 370.64 839 824 175.7
B 5 255 63412 356.29 839 824 175.7
B 0 230 41264 230.21 839 824 175.7
C 14 238 136430 655.64 818 829 206.8
C 3 233 29892 140.52 818 829 206.8
C 13 61 5473 22.45 818 829 206.8
D 1 52 156537 737.93 806 785 211.1
D 11 176 142905 673.34 806 785 211.1
D 2 250 28862 133.02 806 785 211.1

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