ASTROSAT CZTI

Data Quality Report

Orbit 27319

Creation date: 2024-06-27T19:38:50.917716
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_255T01_9000003922_27319cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27319cztM0_level2_quad_clean.evt
Size (bytes)574,678,080109,877,760
Size548.1 MB 104.8 MB
Events in quadrant A3,835,789718,882
Events in quadrant B4,496,559716,345
Events in quadrant C4,144,454679,144
Events in quadrant D4,396,325668,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164670
B0182390
C0173350
D0185060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7832600.766088%
B78331772.259671%
C78331782.272437%
D78331301.659645%

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 8442 7834 3 3 0.04% 0.04%
B 8443 7835 50 50 0.59% 0.64%
C 8443 7835 28 28 0.33% 0.36%
D 8443 7835 56 56 0.66% 0.71%

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 14 235 30093 146.49 980 960 198.9
A 13 248 22533 108.47 980 960 198.9
A 13 254 14451 67.84 980 960 198.9
B 3 64 283688 1532.17 969 946 184.5
B 5 172 138669 746.32 969 946 184.5
B 7 205 108976 585.41 969 946 184.5
C 2 16 199823 906.94 926 929 219.3
C 14 238 146076 661.86 926 929 219.3
C 0 207 116570 527.31 926 929 219.3
D 2 250 260859 1157.86 935 911 224.5
D 1 52 230053 1020.64 935 911 224.5
D 10 103 125163 553.44 935 911 224.5

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