ASTROSAT CZTI

Data Quality Report

Orbit 12668

Creation date: 2024-06-27T16:30:48.700333
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_174T01_9000001876_12668cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12668cztM0_level2_quad_clean.evt
Size (bytes)524,980,80096,229,440
Size500.7 MB 91.8 MB
Events in quadrant A3,228,126635,853
Events in quadrant B5,488,390555,016
Events in quadrant C3,164,846634,969
Events in quadrant D3,549,887607,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141372
B0210121
C0140271
D0153341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6891200.290234%
B689191813.321724%
C6891160.232187%
D6891390.565956%

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 7512 6893 0 0 0.00% 0.00%
B 7512 6892 679 679 9.04% 9.85%
C 7512 6892 0 0 0.00% 0.00%
D 7512 6893 81 81 1.08% 1.18%

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 8 15 26832 153.76 826 808 169.2
A 12 189 21773 123.87 826 808 169.2
A 0 226 7254 38.09 826 808 169.2
B 4 239 2134036 14787.1 762 746 144.3
B 3 64 185453 1280.31 762 746 144.3
B 11 51 109756 755.61 762 746 144.3
C 15 208 10768 52.99 806 812 187.9
C 13 61 5856 26.85 806 812 187.9
C 8 128 4280 18.46 806 812 187.9
D 1 52 370721 1926.19 797 781 192.1
D 13 104 63001 323.96 797 781 192.1
D 10 157 51173 262.38 797 781 192.1

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