ASTROSAT CZTI

Data Quality Report

Orbit 27838

Creation date: 2024-06-27T19:45:02.665968
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/AS1A10_002T04_9000004022_27838cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27838cztM0_level2_quad_clean.evt
Size (bytes)547,387,200101,652,480
Size522.0 MB 96.9 MB
Events in quadrant A3,333,040675,895
Events in quadrant B3,935,818649,279
Events in quadrant C3,779,085640,303
Events in quadrant D5,058,837629,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143650
B0162140
C0156520
D0197610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6941260.374586%
B69412593.731451%
C69401301.873199%
D69402894.164265%

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 7706 6941 0 0 0.00% 0.00%
B 7706 6941 124 124 1.61% 1.79%
C 7705 6940 5 5 0.06% 0.07%
D 7705 6940 221 221 2.87% 3.18%

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 13 254 13678 73.92 860 840 173.7
A 6 16 9961 52.52 860 840 173.7
A 3 137 7955 40.97 860 840 173.7
B 10 245 531102 3346.22 836 818 158.5
B 0 190 57374 356.88 836 818 158.5
B 0 229 40383 249.67 836 818 158.5
C 3 233 429008 2214.56 825 828 193.3
C 14 238 132229 679.61 825 828 193.3
C 13 61 5645 24.91 825 828 193.3
D 1 52 1602282 8092.54 829 808 197.9
D 2 250 203891 1026.22 829 808 197.9
D 13 104 43253 214.48 829 808 197.9

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